STM32L151RCY6 [STMICROELECTRONICS]
Ultra-low-power platform;
| 型号： | STM32L151RCY6 |
| 厂家： | 
ST |
| 描述： | Ultra-low-power platform |
| 文件： | 总134页 (文件大小：1965K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
STM32L15xQC STM32L15xRC-A
STM32L15xVC-A STM32L15xZC
Ultra-low-power 32b MCU ARM®-based Cortex®-M3, 256KB Flash,
32KB SRAM, 8KB EEPROM, LCD, USB, ADC, DAC
Datasheet - production data
Features
• Ultra-low-power platform
– 1.65 V to 3.6 V power supply
LQFP144 (20 × 20 mm)
LQFP100 (14 × 14 mm)
LQFP64 (10 × 10 mm)
UFBGA132
(7 × 7 mm)
WLCSP64
(0.4 mm pitch)
– -40°C to 105°C temperature range
– 305 nA standby mode (3 wakeup pins)
– 1.15 µA standby mode + RTC
– 0.475 µA stop mode (16 wakeup lines)
– 1.35 µA stop mode + RTC
• Up to 116 fast I/Os (102 I/Os 5V tolerant), all
mappable on 16 external interrupt vectors
• Memories
– 256 KB Flash with ECC
– 11 µA Low-power run mode
– 230 µA/MHz run mode
– 32 KB RAM
– 8 KB of true EEPROM with ECC
– 128-byte backup register
– 10 nA ultra-low I/O leakage
• LCD driver (except STM32L151xC/C-A
devices) up to 8x40 segments, contrast
adjustment, blinking mode, step-up converter
– 8 µs wakeup time
®
®
• Core: ARM Cortex -M3 32-bit CPU
– From 32 kHz up to 32 MHz max
– 1.25 DMIPS/MHz (Dhrystone 2.1)
– Memory protection unit
• Rich analog peripherals (down to 1.8V)
– 2x operational amplifiers
– 12-bit ADC 1 Msps up to 40 channels
– 12-bit DAC 2 ch with output buffers
• Up to 23 capacitive sensing channels
• CRC calculation unit, 96-bit unique ID
• Reset and supply management
– 2x ultra-low-power-comparators
(window mode and wake up capability)
• DMA controller 12x channels
• 9x peripheral communication interfaces
– 1x USB 2.0 (internal 48 MHz PLL)
– 3x USARTs
– Low-power, ultrasafe BOR (brownout reset)
with 5 selectable thresholds
– Ultra-low-power POR/PDR
– Up to 8x SPIs (2x I2S, 3x 16 Mbit/s)
– 2x I2Cs (SMBus/PMBus)
– Programmable voltage detector (PVD)
• Clock sources
• 11x timers: 1x 32-bit, 6x 16-bit with up to 4
IC/OC/PWM channels, 2x 16-bit basic timers,
2x watchdog timers (independent and window)
– 1 to 24 MHz crystal oscillator
– 32 kHz oscillator for RTC with calibration
– High Speed Internal 16 MHz factory-
trimmed RC (+/- 1%)
Table 1. Device summary
Reference
Part numbers
– Internal low-power 37 kHz RC
STM32L151QC
STM32L151RC-A STM32L151RCT6A, STM32L151RCY6
STM32L151VC-A STM32L151VCT6A
STM32L151QCH6
– Internal multispeed low-power 65 kHz to
4.2 MHz
STM32L151ZC
STM32L151ZCT6
– PLL for CPU clock and USB (48 MHz)
STM32L152QC
STM32L152RC-A STM32L152RCT6A
STM32L152VC-A STM32L152VCT6A
STM32L152QCH6
• Pre-programmed bootloader
– USB and USART supported
STM32L152ZC
STM32L152ZCT6
• Serial wire debug, JTAG and trace
March 2016
DocID026119 Rev 6
1/134
This is information on a product in full production.
www.st.com
Contents
STM32L151xC/C-A STM32L152xC/C-A
Contents
1
2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1
2.2
Device overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Ultra-low-power device continuum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.1
2.2.2
2.2.3
2.2.4
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Shared peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Common system strategy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3
Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1
3.2
3.3
Low-power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
ARM® Cortex®-M3 core with MPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Reset and supply management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3.1
3.3.2
3.3.3
3.3.4
Power supply schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Power supply supervisor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Boot modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.4
3.5
3.6
3.7
3.8
3.9
Clock management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Low-power real-time clock and backup registers . . . . . . . . . . . . . . . . . . . 23
GPIOs (general-purpose inputs/outputs) . . . . . . . . . . . . . . . . . . . . . . . . . 23
Memories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
DMA (direct memory access) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
LCD (liquid crystal display) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.10 ADC (analog-to-digital converter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.10.1 Temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.10.2 Internal voltage reference (V
) . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
REFINT
3.11 DAC (digital-to-analog converter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.12 Operational amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.13 Ultra-low-power comparators and reference voltage . . . . . . . . . . . . . . . . 27
3.14 System configuration controller and routing interface . . . . . . . . . . . . . . . 27
3.15 Touch sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
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3.16 Timers and watchdogs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.16.1 General-purpose timers (TIM2, TIM3, TIM4, TIM5, TIM9, TIM10 and
TIM11) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.16.2 Basic timers (TIM6 and TIM7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.16.3 SysTick timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.16.4 Independent watchdog (IWDG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.16.5 Window watchdog (WWDG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.17 Communication interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.17.1 I²C bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.17.2 Universal synchronous/asynchronous receiver transmitter (USART) . . 29
3.17.3 Serial peripheral interface (SPI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.17.4 Inter-integrated sound (I2S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.17.5 Universal serial bus (USB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.18 CRC (cyclic redundancy check) calculation unit . . . . . . . . . . . . . . . . . . . 30
3.19 Development support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.19.1 Serial wire JTAG debug port (SWJ-DP) . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.19.2 Embedded Trace Macrocell™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4
5
6
Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Memory mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.1
Parameter conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.1.1
6.1.2
6.1.3
6.1.4
6.1.5
6.1.6
6.1.7
6.1.8
Minimum and maximum values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Typical values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Typical curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Loading capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Power supply scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Optional LCD power supply scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Current consumption measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.2
6.3
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
6.3.1
6.3.2
6.3.3
General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Embedded reset and power control block characteristics . . . . . . . . . . . 60
Embedded internal reference voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 62
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Contents
STM32L151xC/C-A STM32L152xC/C-A
6.3.4
6.3.5
6.3.6
6.3.7
6.3.8
6.3.9
Supply current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Wakeup time from low-power mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
External clock source characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Internal clock source characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
PLL characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Memory characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
6.3.10 EMC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
6.3.11 Electrical sensitivity characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
6.3.12 I/O current injection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
6.3.13 I/O port characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
6.3.14 NRST pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
6.3.15 TIM timer characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
6.3.16 Communications interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
6.3.17 12-bit ADC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
6.3.18 DAC electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
6.3.19 Operational amplifier characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 109
6.3.20 Temperature sensor characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
6.3.21 Comparator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
6.3.22 LCD controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
7
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
7.1
7.2
7.3
7.4
LQFP144, 20 x 20 mm, 144-pin low-profile quad flat package
information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114
LQFP100, 14 x 14 mm, 100-pin low-profile quad flat package
information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117
LQFP64, 10 x 10 mm, 64-pin low-profile quad flat package
information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
UFBGA132, 7 x 7 mm, 132-ball ultra thin, fine-pitch ball grid
array package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
7.5
7.6
WLCSP64, 0.4 mm pitch wafer level chip scale package information . . 126
Thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
7.6.1
Reference document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
8
9
Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
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List of tables
List of tables
Table 1.
Table 2.
Device summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ultra-low-power STM32L151xC/C-A and STM32L152xC/C-A device features
and peripheral counts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Functionalities depending on the operating power supply range . . . . . . . . . . . . . . . . . . . . 15
CPU frequency range depending on dynamic voltage scaling . . . . . . . . . . . . . . . . . . . . . . 16
Functionalities depending on the working mode (from Run/active down to
Table 3.
Table 4.
Table 5.
standby) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Timer feature comparison. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Legend/abbreviations used in the pinout table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
STM32L151xC/C-A and STM32L152xC/C-A pin definitions. . . . . . . . . . . . . . . . . . . . . . . . 37
Alternate function input/output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Thermal characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Embedded reset and power control block characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . 60
Embedded internal reference voltage calibration values . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Embedded internal reference voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Current consumption in Run mode, code with data processing running from Flash. . . . . . 64
Current consumption in Run mode, code with data processing running from RAM . . . . . . 65
Current consumption in Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Current consumption in Low-power run mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Current consumption in Low-power sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Typical and maximum current consumptions in Stop mode . . . . . . . . . . . . . . . . . . . . . . . . 69
Typical and maximum current consumptions in Standby mode . . . . . . . . . . . . . . . . . . . . . 71
Peripheral current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Low-power mode wakeup timings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
High-speed external user clock characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Low-speed external user clock characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
HSE oscillator characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
Table 15.
Table 16.
Table 17.
Table 18.
Table 19.
Table 20.
Table 21.
Table 22.
Table 23.
Table 24.
Table 25.
Table 26.
Table 27.
Table 28.
Table 29.
Table 30.
Table 31.
Table 32.
Table 33.
Table 34.
Table 35.
Table 36.
Table 37.
Table 38.
Table 39.
Table 40.
Table 41.
Table 42.
Table 43.
Table 44.
Table 45.
Table 46.
LSE oscillator characteristics (f
= 32.768 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
LSE
HSI oscillator characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
LSI oscillator characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
MSI oscillator characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
PLL characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
RAM and hardware registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Flash memory and data EEPROM characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Flash memory and data EEPROM endurance and retention . . . . . . . . . . . . . . . . . . . . . . . 85
EMS characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
EMI characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
ESD absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Electrical sensitivities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
I/O current injection susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
I/O static characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Output voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
I/O AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
NRST pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
TIMx characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
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6
List of tables
STM32L151xC/C-A STM32L152xC/C-A
2
Table 47.
Table 48.
Table 49.
Table 50.
Table 51.
Table 52.
Table 53.
Table 54.
Table 55.
Table 56.
Table 57.
Table 58.
Table 59.
Table 60.
Table 61.
Table 62.
Table 63.
Table 64.
Table 65.
Table 66.
Table 67.
Table 68.
I C characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
SCL frequency (f
= 32 MHz, V = VDD_I2C = 3.3 V). . . . . . . . . . . . . . . . . . . . . . . . 95
PCLK1
DD
SPI characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
USB startup time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
USB DC electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
USB: full speed electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
I2S characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
ADC clock frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
ADC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
ADC accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Maximum source impedance R
max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
AIN
DAC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Operational amplifier characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Temperature sensor calibration values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Temperature sensor characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Comparator 1 characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Comparator 2 characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
LCD controller characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
LQFP144, 20 x 20 mm, 144-pin low-profile quad flat package mechanical data . . . . . . . 115
LQPF100, 14 x 14 mm, 100-pin low-profile quad flat package mechanical data . . . . . . . 117
LQFP64, 10 x 10 mm 64-pin low-profile quad flat package mechanical data. . . . . . . . . . 120
UFBGA132, 7 x 7 mm, 132-ball ultra thin, fine-pitch ball grid array
package mechanical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
WLCSP64, 0.4 mm pitch wafer level chip scale package mechanical data . . . . . . . . . . . 126
WLCSP64, 0.4 mm pitch package recommended PCB design rules . . . . . . . . . . . . . . . . 127
Thermal characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
STM32L151xC/C-A and STM32L152xC/C-A ordering information scheme. . . . . . . . . . . 131
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Table 69.
Table 70.
Table 71.
Table 72.
Table 73.
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List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Ultra-low-power STM32L151xC/C-A and STM32L152xC/C-A block diagram . . . . . . . . . . 13
Clock tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
STM32L15xZC LQFP144 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
STM32L15xQC UFBGA132 ballout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
STM32L15xVC-A LQFP100 pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
STM32L15xRC-A LQFP64 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
STM32L15xRC WLCSP64 ballout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Memory map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Pin loading conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Figure 10. Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Figure 11. Power supply scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Figure 12. Optional LCD power supply scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Figure 13. Current consumption measurement scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Figure 14. High-speed external clock source AC timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Figure 15. Low-speed external clock source AC timing diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Figure 16. HSE oscillator circuit diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Figure 17. Typical application with a 32.768 kHz crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Figure 18. I/O AC characteristics definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Figure 19. Recommended NRST pin protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
2
Figure 20. I C bus AC waveforms and measurement circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Figure 21. SPI timing diagram - slave mode and CPHA = 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
(1)
Figure 22. SPI timing diagram - slave mode and CPHA = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
(1)
Figure 23. SPI timing diagram - master mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Figure 24. USB timings: definition of data signal rise and fall time . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
2
(1)
Figure 25. I S slave timing diagram (Philips protocol) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
2
(1)
Figure 26. I S master timing diagram (Philips protocol) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Figure 27. ADC accuracy characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Figure 28. Typical connection diagram using the ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Figure 29. Maximum dynamic current consumption on V
supply pin during ADC
REF+
conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Figure 30. 12-bit buffered /non-buffered DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Figure 31. LQFP144, 20 x 20 mm, 144-pin low-profile quad flat package outline . . . . . . . . . . . . . . . 114
Figure 32. LQFP144, 20 x 20 mm, 144-pin low-profile quad flat package
recommended footprint. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Figure 33. LQFP144, 20 x 20 mm, 144-pin low-profile quad flat package top view example . . . . . . 116
Figure 34. LQFP100, 14 x 14 mm, 100-pin low-profile quad flat package outline . . . . . . . . . . . . . . . 117
Figure 35. LQFP100, 14 x 14 mm, 100-pin low-profile quad flat package
recommended footprint. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Figure 36. LQFP100, 14 x 14 mm, 100-pin low-profile quad flat package top view example . . . . . . 119
Figure 37. LQFP64, 10 x 10 mm, 64-pin low-profile quad flat package outline . . . . . . . . . . . . . . . . . 120
Figure 38. LQFP64, 10 x 10 mm, 64-pin low-profile quad flat package
recommended footprint. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Figure 39. LQFP64 10 x 10 mm, 64-pin low-profile quad flat package top view example . . . . . . . . . 122
Figure 40. UFBGA132, 7 x 7 mm, 132-ball ultra thin, fine-pitch ball grid array package outline . . . . 123
Figure 41. UFBGA132, 7 x 7 mm, 132-ball ultra thin, fine-pitch ball grid array package
recommended footprint. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Figure 42. UFBGA132, 7 x 7 mm, 132-ball ultra thin, fine-pitch ball grid array package
top view example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
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8
List of figures
STM32L151xC/C-A STM32L152xC/C-A
Figure 43. WLCSP64, 0.4 mm pitch wafer level chip scale package outline . . . . . . . . . . . . . . . . . . . 126
Figure 44. WLCSP64, 0.4 mm pitch wafer level chip scale package
recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Figure 45. WLCSP64, 0.4 mm pitch wafer level chip scale package top view example . . . . . . . . . . 128
Figure 46. Thermal resistance suffix 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Figure 47. Thermal resistance suffix 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
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STM32L151xC/C-A STM32L152xC/C-A
Introduction
1
Introduction
This datasheet provides the ordering information and mechanical device characteristics of
®
®
the STM32L151xC/C-A and STM32L152xC/C-A ultra-low-power ARM Cortex -M3 based
microcontroller product line.
The STM32L151xC/C-A and STM32L152xC/C-A microcontrollers feature 256 Kbytes of
Flash memory.
The ultra-low-power STM32L151xC/C-A and STM32L152xC/C-A devices are available in 5
different package types: from 64 pins to 144 pins. Depending on the device chosen,
different sets of peripherals are included, the description below gives an overview of the
complete range of peripherals proposed in this family.
These features make the ultra-low-power STM32L151xC/C-A and STM32L152xC/C-A
microcontroller family suitable for a wide range of applications:
•
•
•
•
•
Medical and handheld equipment
Application control and user interface
PC peripherals, gaming, GPS and sport equipment
Alarm systems, wired and wireless sensors, video intercom
Utility metering
This STM32L151xC/C-A and STM32L152xC/C-A datasheet should be read in conjunction
with the STM32L1xxxx reference manual (RM0038). The application note “Getting started
with STM32L1xxxx hardware development” (AN3216) gives a hardware implementation
overview. Both documents are available from the STMicroelectronics website www.st.com.
®
®
®
®
For information on the ARM Cortex -M3 core please refer to the ARM Cortex -M3
technical reference manual, available from the www.arm.com website. Figure 1 shows the
general block diagram of the device family.
DocID026119 Rev 6
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54
Description
STM32L151xC/C-A STM32L152xC/C-A
2
Description
The ultra-low-power STM32L151xC/C-A and STM32L152xC/C-A devices incorporate the
®
connectivity power of the universal serial bus (USB) with the high-performance ARM
®
Cortex -M3 32-bit RISC core operating at a frequency of 32 MHz (33.3 DMIPS), a memory
protection unit (MPU), high-speed embedded memories (Flash memory up to 256 Kbytes
and RAM up to 32 Kbytes), and an extensive range of enhanced I/Os and peripherals
connected to two APB buses.
The STM32L151xC/C-A and STM32L152xC/C-A devices offer two operational amplifiers,
one 12-bit ADC, two DACs, two ultra-low-power comparators, one general-purpose 32-bit
timer, six general-purpose 16-bit timers and two basic timers, which can be used as time
bases.
Moreover, the STM32L151xC/C-A and STM32L152xC/C-A devices contain standard and
advanced communication interfaces: up to two I2Cs, three SPIs, two I2S, three USARTs,
and an USB. The STM32L151xC/C-A and STM32L152xC/C-A devices offer up to
23 capacitive sensing channels to simply add a touch sensing functionality to any
application.
They also include a real-time clock and a set of backup registers that remain powered in
Standby mode.
Finally, the integrated LCD controller (except STM32L151xC/C-A devices) has a built-in
LCD voltage generator that allows to drive up to 8 multiplexed LCDs with the contrast
independent of the supply voltage.
The ultra-low-power STM32L151xC/C-A and STM32L152xC/C-A devices operate from a
1.8 to 3.6 V power supply (down to 1.65 V at power down) with BOR and from a 1.65 to
3.6 V power supply without BOR option. They are available in the -40 to +85 °C and -40 to
+105 °C temperature ranges. A comprehensive set of power-saving modes allows the
design of low-power applications.
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STM32L151xC/C-A STM32L152xC/C-A
Description
2.1
Device overview
Table 2. Ultra-low-power STM32L151xC/C-A and STM32L152xC/C-A device features
and peripheral counts
Peripheral
STM32L15xRC-A STM32L15xVC-A
256
STM32L15xQC
STM32L15xZC
Flash (Kbytes)
Data EEPROM (Kbytes)
RAM (Kbytes)
32 bit
8
32
1
General-
Timers
6
2
purpose
Basic
SPI
8(3)(1)
I2S
2
2
3
1
Communi-
cation
interfaces
I2C
USART
USB
GPIOs
51
83
109
115
Operation amplifiers
2
12-bit synchronized ADC
Number of channels
1
21
1
25
1
40
1
40
12-bit DAC
Number of channels
2
2
LCD (STM32L152xx devices
only)
1
1
COM x SEG
4x32 or 8x28
4x44 or 8x40
Comparators
2
23
Capacitive sensing channels
Max. CPU frequency
32 MHz
1.8 V to 3.6 V (down to 1.65 V at power-down) with BOR option
1.65 V to 3.6 V without BOR option
Operating voltage
Operating temperatures
Packages
Ambient operating temperature: -40 °C to 85 °C / -40 °C to 105 °C
Junction temperature: –40 to + 110 °C
LQFP64,
WLCSP64
LQFP100
UFBGA132
LQFP144
1. 5 SPIs are USART configured in synchronous mode emulating SPI master.
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54
Description
STM32L151xC/C-A STM32L152xC/C-A
2.2
Ultra-low-power device continuum
The ultra-low-power family offers a large choice of cores and features. From proprietary 8-
bit to up to Cortex-M3, including the Cortex-M0+, the STM32Lx series are the best choice to
answer the user needs, in terms of ultra-low-power features. The STM32 ultra-low-power
series are the best fit, for instance, for gas/water meter, keyboard/mouse or fitness and
healthcare, wearable applications. Several built-in features like LCD drivers, dual-bank
memory, Low-power run mode, op-amp, AES 128-bit, DAC, USB crystal-less and many
others will clearly allow to build very cost-optimized applications by reducing BOM.
Note:
STMicroelectronics as a reliable and long-term manufacturer ensures as much as possible
the pin-to-pin compatibility between any STM8Lxxxxx and STM32Lxxxxx devices and
between any of the STM32Lx and STM32Fx series. Thanks to this unprecedented
scalability, the old applications can be upgraded to respond to the latest market features and
efficiency demand.
2.2.1
Performance
All the families incorporate highly energy-efficient cores with both Harvard architecture and
pipelined execution: advanced STM8 core for STM8L families and ARM Cortex-M3 core for
STM32L family. In addition specific care for the design architecture has been taken to
optimize the mA/DMIPS and mA/MHz ratios.
This allows the ultra-low-power performance to range from 5 up to 33.3 DMIPs.
2.2.2
2.2.3
Shared peripherals
STM8L15xxx, STM32L15xxx and STM32L162xx share identical peripherals which ensure a
very easy migration from one family to another:
•
•
Analog peripherals: ADC, DAC and comparators
Digital peripherals: RTC and some communication interfaces
Common system strategy.
To offer flexibility and optimize performance, the STM8L15xxx, STM32L15xxx and
STM32L162xx family uses a common architecture:
•
•
Same power supply range from 1.65 V to 3.6 V
Architecture optimized to reach ultra-low consumption both in low-power modes and
Run mode
•
•
•
Fast startup strategy from low-power modes
Flexible system clock
Ultrasafe reset: same reset strategy including power-on reset, power-down reset,
brownout reset and programmable voltage detector
2.2.4
Features
ST ultra-low-power continuum also lies in feature compatibility:
•
•
More than 15 packages with pin count from 20 to 144 pins and size down to 3 x 3 mm
Memory density ranging from 2 to 512 Kbytes
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STM32L151xC/C-A STM32L152xC/C-A
Functional overview
3
Functional overview
Figure 1. Ultra-low-power STM32L151xC/C-A and STM32L152xC/C-A block diagram
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DocID026119 Rev 6
13/134
54
Functional overview
STM32L151xC/C-A STM32L152xC/C-A
3.1
Low-power modes
The ultra-low-power STM32L151xC/C-A and STM32L152xC/C-A devices support dynamic
voltage scaling to optimize its power consumption in run mode. The voltage from the internal
low-drop regulator that supplies the logic can be adjusted according to the system’s
maximum operating frequency and the external voltage supply.
There are three power consumption ranges:
•
•
•
Range 1 (V range limited to 1.71 V - 3.6 V), with the CPU running at up to 32 MHz
DD
Range 2 (full V range), with a maximum CPU frequency of 16 MHz
DD
Range 3 (full V range), with a maximum CPU frequency limited to 4 MHz (generated
DD
only with the multispeed internal RC oscillator clock source)
Seven low-power modes are provided to achieve the best compromise between low-power
consumption, short startup time and available wakeup sources:
•
Sleep mode
In Sleep mode, only the CPU is stopped. All peripherals continue to operate and can
wake up the CPU when an interrupt/event occurs. Sleep mode power consumption at
16 MHz is about 1 mA with all peripherals off.
•
Low-power run mode
This mode is achieved with the multispeed internal (MSI) RC oscillator set to the
minimum clock (131 kHz), execution from SRAM or Flash memory, and internal
regulator in low-power mode to minimize the regulator's operating current. In low-power
run mode, the clock frequency and the number of enabled peripherals are both limited.
•
•
Low-power sleep mode
This mode is achieved by entering Sleep mode with the internal voltage regulator in
Low-power mode to minimize the regulator’s operating current. In Low-power sleep
mode, both the clock frequency and the number of enabled peripherals are limited; a
typical example would be to have a timer running at 32 kHz.
When wakeup is triggered by an event or an interrupt, the system reverts to the run
mode with the regulator on.
Stop mode with RTC
Stop mode achieves the lowest power consumption while retaining the RAM and
register contents and real time clock. All clocks in the V
domain are stopped, the
CORE
PLL, MSI RC, HSI RC and HSE crystal oscillators are disabled. The LSE or LSI is still
running. The voltage regulator is in the low-power mode.
The device can be woken up from Stop mode by any of the EXTI line, in 8 µs. The EXTI
line source can be one of the 16 external lines. It can be the PVD output, the
Comparator 1 event or Comparator 2 event (if internal reference voltage is on), it can
be the RTC alarm(s), the USB wakeup, the RTC tamper events, the RTC timestamp
event or the RTC wakeup.
14/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Functional overview
•
Stop mode without RTC
Stop mode achieves the lowest power consumption while retaining the RAM and
register contents. All clocks are stopped, the PLL, MSI RC, HSI and LSI RC, LSE and
HSE crystal oscillators are disabled. The voltage regulator is in the low-power mode.
The device can be woken up from Stop mode by any of the EXTI line, in 8 µs. The EXTI
line source can be one of the 16 external lines. It can be the PVD output, the
Comparator 1 event or Comparator 2 event (if internal reference voltage is on). It can
also be wakened by the USB wakeup.
•
Standby mode with RTC
Standby mode is used to achieve the lowest power consumption and real time clock.
The internal voltage regulator is switched off so that the entire V
domain is
CORE
powered off. The PLL, MSI RC, HSI RC and HSE crystal oscillators are also switched
off. The LSE or LSI is still running. After entering Standby mode, the RAM and register
contents are lost except for registers in the Standby circuitry (wakeup logic, IWDG,
RTC, LSI, LSE Crystal 32K osc, RCC_CSR).
The device exits Standby mode in 60 µs when an external reset (NRST pin), an IWDG
reset, a rising edge on one of the three WKUP pins, RTC alarm (Alarm A or Alarm B),
RTC tamper event, RTC timestamp event or RTC Wakeup event occurs.
•
Standby mode without RTC
Standby mode is used to achieve the lowest power consumption. The internal voltage
regulator is switched off so that the entire V
domain is powered off. The PLL, MSI
CORE
RC, HSI and LSI RC, HSE and LSE crystal oscillators are also switched off. After
entering Standby mode, the RAM and register contents are lost except for registers in
the Standby circuitry (wakeup logic, IWDG, RTC, LSI, LSE Crystal 32K osc,
RCC_CSR).
The device exits Standby mode in 60 µs when an external reset (NRST pin) or a rising
edge on one of the three WKUP pin occurs.
Note:
The RTC, the IWDG, and the corresponding clock sources are not stopped automatically by
entering Stop or Standby mode.
Table 3. Functionalities depending on the operating power supply range
Functionalities depending on the operating power supply range
Operating power supply
DAC and ADC
operation
Dynamic voltage
scaling range
USB
I/O operation
range
Range 2 or
Range 3
Degraded speed
performance
VDD= VDDA = 1.65 to 1.71 V
VDD=VDDA= 1.71 to 1.8 V(1)
VDD=VDDA= 1.8 to 2.0 V(1)
Not functional
Not functional
Not functional
Not functional
Not functional
Range 1, Range 2
or Range 3
Degraded speed
performance
Range 1, Range 2
Conversion time up
to 500 Ksps
Degraded speed
performance
or
Range 3
DocID026119 Rev 6
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54
Functional overview
STM32L151xC/C-A STM32L152xC/C-A
Table 3. Functionalities depending on the operating power supply range (continued)
Functionalities depending on the operating power supply range
Operating power supply
range
DAC and ADC
operation
Dynamic voltage
scaling range
USB
I/O operation
Conversion time up
to 500 Ksps
Range 1, Range 2
or Range 3
VDD=VDDA = 2.0 to 2.4 V
Functional(2)
Functional(2)
Full speed operation
Full speed operation
Conversion time up
to 1 Msps
Range 1, Range 2
or Range 3
VDD=VDDA = 2.4 to 3.6 V
1. CPU frequency changes from initial to final must respect “FCPU initial < 4*FCPU final” to limit VCORE drop due to current
consumption peak when frequency increases. It must also respect 5 µs delay between two changes. For example to switch
from 4.2 MHz to 32 MHz, the user can switch from 4.2 MHz to 16 MHz, wait 5 µs, then switch from 16 MHz to 32 MHz.
2. Should be USB compliant from I/O voltage standpoint, the minimum VDD is 3.0 V.
Table 4. CPU frequency range depending on dynamic voltage scaling
CPU frequency range
Dynamic voltage scaling range
16 MHz to 32 MHz (1ws)
32 kHz to 16 MHz (0ws)
Range 1
8 MHz to 16 MHz (1ws)
32 kHz to 8 MHz (0ws)
Range 2
Range 3
2.1MHz to 4.2 MHz (1ws)
32 kHz to 2.1 MHz (0ws)
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DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Functional overview
Table 5. Functionalities depending on the working mode (from Run/active down to
standby)
Stop
Standby
Low-
power
Run
Low-
power
Sleep
Ips
Run/Active
Sleep
Wakeup
capability
Wakeup
capability
CPU
Flash
RAM
Y
Y
Y
Y
Y
--
Y
Y
Y
Y
Y
Y
Y
Y
Y
--
Y
Y
Y
Y
--
--
Y
Y
Y
--
--
--
--
--
--
--
--
Y
--
--
--
--
--
--
Backup Registers
EEPROM
Brown-out rest
(BOR)
Y
Y
Y
Y
Y
Y
Y
Y
Y
--
Y
--
Y
--
--
--
DMA
Programmable
Voltage Detector
(PVD)
Y
Y
Y
Y
Y
Y
Y
--
Power On Reset
(POR)
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
--
--
Y
Y
Y
Y
Y
Y
--
--
Y
Y
Y
Y
Y
Y
--
--
Y
Y
--
--
Y
--
--
--
--
--
--
--
Y
Y
--
--
Y
Y
--
--
--
--
--
--
--
--
--
--
Power Down Rest
(PDR)
High Speed
Internal (HSI)
High Speed
External (HSE)
Low Speed Internal
(LSI)
Low Speed
External (LSE)
Multi-Speed
Internal (MSI)
Inter-Connect
Controller
RTC
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
--
Y
RTC Tamper
Auto WakeUp
(AWU)
Y
Y
Y
Y
Y
Y
--
Y
Y
LCD
USB
USART
SPI
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
--
Y
Y
Y
Y
--
Y
Y
Y
Y
--
Y
--
--
--
--
--
--
--
--
--
--
--
--
Y
(1)
--
(1)
I2C
DocID026119 Rev 6
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54
Functional overview
STM32L151xC/C-A STM32L152xC/C-A
Table 5. Functionalities depending on the working mode (from Run/active down to
standby) (continued)
Stop
Standby
Low-
power
Run
Low-
power
Sleep
Ips
Run/Active
Sleep
Wakeup
capability
Wakeup
capability
ADC
DAC
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
--
Y
Y
Y
Y
--
Y
Y
Y
Y
--
Y
Y
Y
Y
--
--
--
--
Y
--
--
--
--
--
--
--
--
--
--
Tempsensor
OP amp
Comparators
16-bit and 32-bit
Timers
Y
Y
Y
Y
--
--
--
--
IWDG
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
--
Y
Y
Y
Y
--
Y
Y
Y
--
--
Y
--
--
--
Y
Y
--
--
--
--
Y
--
WWDG
Touch sensing
Systic Timer
GPIOs
--
--
Y
3 pins
Wakeup time to
Run mode
0 µs
0.4 µs
3 µs
46 µs
< 8 µs
58 µs
0.475 µA
(no RTC)
VDD=1.8V
0.305 µA
(no RTC)
VDD=1.8V
1.1 µA
(with RTC)
DD=1.8V
0.82 µA
(with RTC)
VDD=1.8V
Consumption
VDD=1.8 to 3.6 V
(Typ)
Down to 230
µA/MHz (from
Flash)
Down to 43
µA/MHz (from
Flash)
V
Down to Down to
11 µA 4.4 µA
0.475 µA
(no RTC)
0.305 µA
(no RTC)
VDD=3.0V
VDD=3.0V
1.35 µA
(with RTC)
1.15 µA
(with RTC)
VDD=3.0V
VDD=3.0V
1. The startup on communication line wakes the CPU which was made possible by an EXTI, this induces a delay before
entering run mode.
3.2
ARM® Cortex®-M3 core with MPU
®
®
The ARM Cortex -M3 processor is the industry leading processor for embedded systems.
It has been developed to provide a low-cost platform that meets the needs of MCU
implementation, with a reduced pin count and low-power consumption, while delivering
outstanding computational performance and an advanced system response to interrupts.
®
®
The ARM Cortex -M3 32-bit RISC processor features exceptional code-efficiency,
delivering the high-performance expected from an ARM core in the memory size usually
associated with 8- and 16-bit devices.
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DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Functional overview
The memory protection unit (MPU) improves system reliability by defining the memory
attributes (such as read/write access permissions) for different memory regions. It provides
up to eight different regions and an optional predefined background region.
Owing to its embedded ARM core, the STM32L151xC/C-A and STM32L152xC/C-A devices
are compatible with all ARM tools and software.
Nested vectored interrupt controller (NVIC)
The ultra-low-power STM32L151xC/C-A and STM32L152xC/C-A devices embed a nested
vectored interrupt controller able to handle up to 56 maskable interrupt channels (not
®
®
including the 16 interrupt lines of ARM Cortex -M3) and 16 priority levels.
•
•
•
•
•
•
•
•
Closely coupled NVIC gives low-latency interrupt processing
Interrupt entry vector table address passed directly to the core
Closely coupled NVIC core interface
Allows early processing of interrupts
Processing of late arriving, higher-priority interrupts
Support for tail-chaining
Processor state automatically saved
Interrupt entry restored on interrupt exit with no instruction overhead
This hardware block provides flexible interrupt management features with minimal interrupt
latency.
3.3
Reset and supply management
3.3.1
Power supply schemes
•
V
= 1.65 to 3.6 V: external power supply for I/Os and the internal regulator. Provided
DD
externally through V pins.
DD
•
V
, V
= 1.65 to 3.6 V: external analog power supplies for ADC, reset blocks, RCs
SSA DDA
and PLL (minimum voltage to be applied to V
is 1.8 V when the ADC is used). V
DDA
DDA
and V
must be connected to V and V , respectively.
SSA
DD SS
3.3.2
Power supply supervisor
The device has an integrated ZEROPOWER power-on reset (POR)/power-down reset
(PDR) that can be coupled with a brownout reset (BOR) circuitry.
The device exists in two versions:
•
•
The version with BOR activated at power-on operates between 1.8 V and 3.6 V.
The other version without BOR operates between 1.65 V and 3.6 V.
After the V threshold is reached (1.65 V or 1.8 V depending on the BOR which is active or
DD
not at power-on), the option byte loading process starts, either to confirm or modify default
thresholds, or to disable the BOR permanently: in this case, the V min value becomes
DD
1.65 V (whatever the version, BOR active or not, at power-on).
When BOR is active at power-on, it ensures proper operation starting from 1.8 V whatever
the power ramp-up phase before it reaches 1.8 V. When BOR is not active at power-up, the
DocID026119 Rev 6
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54
Functional overview
STM32L151xC/C-A STM32L152xC/C-A
power ramp-up should guarantee that 1.65 V is reached on V at least 1 ms after it exits
DD
the POR area.
Five BOR thresholds are available through option bytes, starting from 1.8 V to 3 V. To
reduce the power consumption in Stop mode, it is possible to automatically switch off the
internal reference voltage (V
) in Stop mode. The device remains in reset mode when
REFINT
V
is below a specified threshold, V
or V
, without the need for any external
DD
POR/PDR
BOR
reset circuit.
Note:
3.3.3
3.3.4
The start-up time at power-on is typically 3.3 ms when BOR is active at power-up, the start-
up time at power-on can be decreased down to 1 ms typically for devices with BOR inactive
at power-up.
The device features an embedded programmable voltage detector (PVD) that monitors the
V
/V
power supply and compares it to the V
threshold. This PVD offers 7 different
DD DDA
PVD
levels between 1.85 V and 3.05 V, chosen by software, with a step around 200 mV. An
interrupt can be generated when V /V drops below the V threshold and/or when
DD DDA
PVD
V
/V
is higher than the V
threshold. The interrupt service routine can then generate
DD DDA
PVD
a warning message and/or put the MCU into a safe state. The PVD is enabled by software.
Voltage regulator
The regulator has three operation modes: main (MR), low-power (LPR) and power down.
•
•
•
MR is used in Run mode (nominal regulation)
LPR is used in the Low-power run, Low-power sleep and Stop modes
Power down is used in Standby mode. The regulator output is high impedance, the
kernel circuitry is powered down, inducing zero consumption but the contents of the
registers and RAM are lost except for the standby circuitry (wakeup logic, IWDG, RTC,
LSI, LSE crystal 32K osc, RCC_CSR).
Boot modes
At startup, boot pins are used to select one of three boot options:
•
•
•
Boot from Flash memory
Boot from System memory
Boot from embedded RAM
The boot loader is located in System memory. It is used to reprogram the Flash memory by
using USART1, USART2 or USB. See Application note “STM32 microcontroller system
memory boot mode” (AN2606) for details.
20/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Functional overview
3.4
Clock management
The clock controller distributes the clocks coming from different oscillators to the core and
the peripherals. It also manages clock gating for low-power modes and ensures clock
robustness. It features:
•
Clock prescaler: to get the best trade-off between speed and current consumption, the
clock frequency to the CPU and peripherals can be adjusted by a programmable
prescaler.
•
•
•
Safe clock switching: clock sources can be changed safely on the fly in run mode
through a configuration register.
Clock management: to reduce power consumption, the clock controller can stop the
clock to the core, individual peripherals or memory.
System clock source: three different clock sources can be used to drive the master
clock SYSCLK:
–
–
1-24 MHz high-speed external crystal (HSE), that can supply a PLL
16 MHz high-speed internal RC oscillator (HSI), trimmable by software, that can
supply a PLL
–
Multispeed internal RC oscillator (MSI), trimmable by software, able to generate 7
frequencies (65 kHz, 131 kHz, 262 kHz, 524 kHz, 1.05 MHz, 2.1 MHz, 4.2 MHz).
When a 32.768 kHz clock source is available in the system (LSE), the MSI
frequency can be trimmed by software down to a ±0.5% accuracy.
•
Auxiliary clock source: two ultra-low-power clock sources that can be used to drive
the LCD controller and the real-time clock:
–
–
32.768 kHz low-speed external crystal (LSE)
37 kHz low-speed internal RC (LSI), also used to drive the independent watchdog.
The LSI clock can be measured using the high-speed internal RC oscillator for
greater precision.
•
•
•
RTC and LCD clock sources: the LSI, LSE or HSE sources can be chosen to clock
the RTC and the LCD, whatever the system clock.
USB clock source: the embedded PLL has a dedicated 48 MHz clock output to supply
the USB interface.
Startup clock: after reset, the microcontroller restarts by default with an internal 2 MHz
clock (MSI). The prescaler ratio and clock source can be changed by the application
program as soon as the code execution starts.
•
•
Clock security system (CSS): this feature can be enabled by software. If a HSE clock
failure occurs, the master clock is automatically switched to HSI and a software
interrupt is generated if enabled.
Clock-out capability (MCO: microcontroller clock output): it outputs one of the
internal clocks for external use by the application.
Several prescalers allow the configuration of the AHB frequency, each APB (APB1 and
APB2) domains. The maximum frequency of the AHB and the APB domains is 32 MHz. See
Figure 2 for details on the clock tree.
DocID026119 Rev 6
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54
Functional overview
STM32L151xC/C-A STM32L152xC/C-A
Figure 2. Clock tree
3TANDBY SUPPLIED VOLTAGE DOMAIN
ENABLE
7ATCHDOG
7ATCHDOG
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24# ENABLE
24#
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2ADIO 3LEEP 4IMER ENABLE
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CK?LSE
LEVEL SHIFTERS
6
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CK?HSE
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ꢈ ꢀꢄꢇꢄꢉꢉꢂꢀꢇ
LEVEL SHIFTERS
6
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CK?PLLIN
PRESCALER PRESCALER
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,3
6ꢃꢃ
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Functional overview
3.5
Low-power real-time clock and backup registers
The real-time clock (RTC) is an independent BCD timer/counter. Dedicated registers contain
the sub-second, second, minute, hour (12/24 hour), week day, date, month, year, in BCD
(binary-coded decimal) format. Correction for 28, 29 (leap year), 30, and 31 day of the
month are made automatically. The RTC provides two programmable alarms and
programmable periodic interrupts with wakeup from Stop and Standby modes.
The programmable wakeup time ranges from 120 µs to 36 hours.
The RTC can be calibrated with an external 512 Hz output, and a digital compensation
circuit helps reduce drift due to crystal deviation.
The RTC can also be automatically corrected with a 50/60Hz stable powerline.
The RTC calendar can be updated on the fly down to sub second precision, which enables
network system synchronization.
A time stamp can record an external event occurrence, and generates an interrupt.
There are thirty-two 32-bit backup registers provided to store 128 bytes of user application
data. They are cleared in case of tamper detection.
Three pins can be used to detect tamper events. A change on one of these pins can reset
backup register and generate an interrupt. To prevent false tamper event, like ESD event,
these three tamper inputs can be digitally filtered.
3.6
GPIOs (general-purpose inputs/outputs)
Each of the GPIO pins can be configured by software as output (push-pull or open-drain), as
input (with or without pull-up or pull-down) or as peripheral alternate function. Most of the
GPIO pins are shared with digital or analog alternate functions, and can be individually
remapped using dedicated AFIO registers. All GPIOs are high current capable. The
alternate function configuration of I/Os can be locked if needed following a specific
sequence in order to avoid spurious writing to the I/O registers. The I/O controller is
connected to the AHB with a toggling speed of up to 16 MHz.
External interrupt/event controller (EXTI)
The external interrupt/event controller consists of 24 edge detector lines used to generate
interrupt/event requests. Each line can be individually configured to select the trigger event
(rising edge, falling edge, both) and can be masked independently. A pending register
maintains the status of the interrupt requests. The EXTI can detect an external line with a
pulse width shorter than the Internal APB2 clock period. Up to 115 GPIOs can be connected
to the 16 external interrupt lines. The 8 other lines are connected to RTC, PVD, USB,
comparator events or capacitive sensing acquisition.
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54
Functional overview
STM32L151xC/C-A STM32L152xC/C-A
3.7
Memories
The STM32L151xC/C-A and STM32L152xC/C-A devices have the following features:
•
32 Kbytes of embedded RAM accessed (read/write) at CPU clock speed with 0 wait
states. With the enhanced bus matrix, operating the RAM does not lead to any
performance penalty during accesses to the system bus (AHB and APB buses).
•
The non-volatile memory is divided into three arrays:
–
–
–
256 Kbytes of embedded Flash program memory
8 Kbytes of data EEPROM
Options bytes
The options bytes are used to write-protect or read-out protect the memory (with 4
Kbytes granularity) and/or readout-protect the whole memory with the following
options:
–
–
Level 0: no readout protection
Level 1: memory readout protection, the Flash memory cannot be read from or
written to if either debug features are connected or boot in RAM is selected
–
Level 2: chip readout protection, debug features (ARM Cortex-M3 JTAG and serial
wire) and boot in RAM selection disabled (JTAG fuse)
The whole non-volatile memory embeds the error correction code (ECC) feature.
3.8
DMA (direct memory access)
The flexible 12-channel, general-purpose DMA is able to manage memory-to-memory,
peripheral-to-memory and memory-to-peripheral transfers. The DMA controller supports
circular buffer management, avoiding the generation of interrupts when the controller
reaches the end of the buffer.
Each channel is connected to dedicated hardware DMA requests, with software trigger
support for each channel. Configuration is done by software and transfer sizes between
source and destination are independent.
2
The DMA can be used with the main peripherals: SPI, I C, USART, general-purpose timers,
DAC and ADC.
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STM32L151xC/C-A STM32L152xC/C-A
Functional overview
3.9
LCD (liquid crystal display)
The LCD drives up to 8 common terminals and 44 segment terminals to drive up to 320
pixels.
•
Internal step-up converter to guarantee functionality and contrast control irrespective of
. This converter can be deactivated, in which case the V pin is used to provide
V
DD
LCD
the voltage to the LCD
•
•
•
•
•
•
•
Supports static, 1/2, 1/3, 1/4 and 1/8 duty
Supports static, 1/2, 1/3 and 1/4 bias
Phase inversion to reduce power consumption and EMI
Up to 8 pixels can be programmed to blink
Unneeded segments and common pins can be used as general I/O pins
LCD RAM can be updated at any time owing to a double-buffer
The LCD controller can operate in Stop mode
3.10
ADC (analog-to-digital converter)
A 12-bit analog-to-digital converters is embedded into STM32L151xC/C-A and
STM32L152xC/C-A devices with up to 40 external channels, performing conversions in
single-shot or scan mode. In scan mode, automatic conversion is performed on a selected
group of analog inputs with up to 28 external channels in a group.
The ADC can be served by the DMA controller.
An analog watchdog feature allows very precise monitoring of the converted voltage of one,
some or all scanned channels. An interrupt is generated when the converted voltage is
outside the programmed thresholds.
The events generated by the general-purpose timers (TIMx) can be internally connected to
the ADC start triggers, to allow the application to synchronize A/D conversions and timers.
An injection mode allows high priority conversions to be done by interrupting a scan mode
which runs in as a background task.
The ADC includes a specific low-power mode. The converter is able to operate at maximum
speed even if the CPU is operating at a very low frequency and has an auto-shutdown
function. The ADC’s runtime and analog front-end current consumption are thus minimized
whatever the MCU operating mode.
3.10.1
Temperature sensor
The temperature sensor (TS) generates a voltage V
temperature.
that varies linearly with
SENSE
The temperature sensor is internally connected to the ADC_IN16 input channel which is
used to convert the sensor output voltage into a digital value.
The sensor provides good linearity but it has to be calibrated to obtain good overall
accuracy of the temperature measurement. As the offset of the temperature sensor varies
from chip to chip due to process variation, the uncalibrated internal temperature sensor is
suitable for applications that detect temperature changes only.
To improve the accuracy of the temperature sensor measurement, each device is
individually factory-calibrated by ST. The temperature sensor factory calibration data are
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54
Functional overview
STM32L151xC/C-A STM32L152xC/C-A
stored by ST in the system memory area, accessible in read-only mode. See Table 60:
Temperature sensor calibration values.
3.10.2
Internal voltage reference (V
)
REFINT
The internal voltage reference (V
) provides a stable (bandgap) voltage output for the
REFINT
ADC and Comparators. V
is internally connected to the ADC_IN17 input channel. It
REFINT
enables accurate monitoring of the V value (when no external voltage, VREF+, is
DD
available for ADC). The precise voltage of V
is individually measured for each part by
REFINT
ST during production test and stored in the system memory area. It is accessible in read-
only mode. See Table 15: Embedded internal reference voltage calibration values.
3.11
DAC (digital-to-analog converter)
The two 12-bit buffered DAC channels can be used to convert two digital signals into two
analog voltage signal outputs. The chosen design structure is composed of integrated
resistor strings and an amplifier in non-inverting configuration.
This dual digital Interface supports the following features:
•
•
•
•
•
•
•
•
•
•
Two DAC converters: one for each output channel
8-bit or 12-bit monotonic output
Left or right data alignment in 12-bit mode
Synchronized update capability
Noise-wave generation
Triangular-wave generation
Dual DAC channels, independent or simultaneous conversions
DMA capability for each channel (including the underrun interrupt)
External triggers for conversion
Input reference voltage V
REF+
Eight DAC trigger inputs are used in the STM32L151xC/C-A and STM32L152xC/C-A
devices. The DAC channels are triggered through the timer update outputs that are also
connected to different DMA channels.
3.12
Operational amplifier
The STM32L151xC/C-A and STM32L152xC/C-A devices embed two operational amplifiers
with external or internal follower routing capability (or even amplifier and filter capability with
external components). When one operational amplifier is selected, one external ADC
channel is used to enable output measurement.
The operational amplifiers feature:
•
•
•
•
Low input bias current
Low offset voltage
Low-power mode
Rail-to-rail input
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Functional overview
3.13
Ultra-low-power comparators and reference voltage
The STM32L151xC/C-A and STM32L152xC/C-A devices embed two comparators sharing
the same current bias and reference voltage. The reference voltage can be internal or
external (coming from an I/O).
•
•
One comparator with fixed threshold
One comparator with rail-to-rail inputs, fast or slow mode. The threshold can be one of
the following:
–
–
–
DAC output
External I/O
Internal reference voltage (V
) or a sub-multiple (1/4, 1/2, 3/4)
REFINT
Both comparators can wake up from Stop mode, and be combined into a window
comparator.
The internal reference voltage is available externally via a low-power / low-current output
buffer (driving current capability of 1 µA typical).
3.14
3.15
System configuration controller and routing interface
The system configuration controller provides the capability to remap some alternate
functions on different I/O ports.
The highly flexible routing interface allows the application firmware to control the routing of
different I/Os to the TIM2, TIM3 and TIM4 timer input captures. It also controls the routing of
internal analog signals to ADC1, COMP1 and COMP2 and the internal reference voltage
V
.
REFINT
Touch sensing
The STM32L151xC/C-A and STM32L152xC/C-A devices provide a simple solution for
adding capacitive sensing functionality to any application. These devices offer up to 23
capacitive sensing channels distributed over 10 analog I/O groups. Both software and timer
capacitive sensing acquisition modes are supported.
Capacitive sensing technology is able to detect the presence of a finger near a sensor which
is protected from direct touch by a dielectric (glass, plastic...). The capacitive variation
introduced by the finger (or any conductive object) is measured using a proven
implementation based on a surface charge transfer acquisition principle. It consists of
charging the sensor capacitance and then transferring a part of the accumulated charges
into a sampling capacitor until the voltage across this capacitor has reached a specific
threshold. The capacitive sensing acquisition only requires few external components to
operate. This acquisition is managed directly by the GPIOs, timers and analog I/O groups
(see Section 3.14: System configuration controller and routing interface).
Reliable touch sensing functionality can be quickly and easily implemented using the free
STM32L1xx STMTouch touch sensing firmware library.
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Functional overview
STM32L151xC/C-A STM32L152xC/C-A
3.16
Timers and watchdogs
The ultra-low-power STM32L151xC/C-A and STM32L152xC/C-A devices include seven
general-purpose timers, two basic timers, and two watchdog timers.
Table 6 compares the features of the general-purpose and basic timers.
Table 6. Timer feature comparison
DMA
Counter
resolution
Capture/compare Complementary
Timer
Counter type
Prescaler factor
request
channels
outputs
generation
TIM2,
TIM3,
TIM4
Up, down,
up/down
Any integer between
1 and 65536
16-bit
Yes
4
No
Up, down,
up/down
Any integer between
1 and 65536
TIM5
TIM9
32-bit
16-bit
16-bit
16-bit
Yes
No
4
2
1
0
No
No
No
No
Up, down,
up/down
Any integer between
1 and 65536
TIM10,
TIM11
Any integer between
1 and 65536
Up
Up
No
TIM6,
TIM7
Any integer between
1 and 65536
Yes
3.16.1
General-purpose timers (TIM2, TIM3, TIM4, TIM5, TIM9, TIM10 and
TIM11)
There are seven synchronizable general-purpose timers embedded in the
STM32L151xC/C-A and STM32L152xC/C-A devices (see Table 6 for differences).
TIM2, TIM3, TIM4, TIM5
TIM2, TIM3, TIM4 are based on 16-bit auto-reload up/down counter. TIM5 is based on a 32-
bit auto-reload up/down counter. They include a 16-bit prescaler. They feature four
independent channels each for input capture/output compare, PWM or one-pulse mode
output. This gives up to 16 input captures/output compares/PWMs on the largest packages.
TIM2, TIM3, TIM4, TIM5 general-purpose timers can work together or with the TIM10,
TIM11 and TIM9 general-purpose timers via the Timer Link feature for synchronization or
event chaining. Their counter can be frozen in debug mode. Any of the general-purpose
timers can be used to generate PWM outputs.
TIM2, TIM3, TIM4, TIM5 all have independent DMA request generation.
These timers are capable of handling quadrature (incremental) encoder signals and the
digital outputs from 1 to 3 hall-effect sensors.
TIM10, TIM11 and TIM9
TIM10 and TIM11 are based on a 16-bit auto-reload upcounter. TIM9 is based on a 16-bit
auto-reload up/down counter. They include a 16-bit prescaler. TIM10 and TIM11 feature one
independent channel, whereas TIM9 has two independent channels for input capture/output
compare, PWM or one-pulse mode output. They can be synchronized with the TIM2, TIM3,
TIM4, TIM5 full-featured general-purpose timers.
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STM32L151xC/C-A STM32L152xC/C-A
Functional overview
They can also be used as simple time bases and be clocked by the LSE clock source
(32.768 kHz) to provide time bases independent from the main CPU clock.
3.16.2
3.16.3
Basic timers (TIM6 and TIM7)
These timers are mainly used for DAC trigger generation. They can also be used as generic
16-bit time bases.
SysTick timer
This timer is dedicated to the OS, but could also be used as a standard downcounter. It is
based on a 24-bit downcounter with autoreload capability and a programmable clock
source. It features a maskable system interrupt generation when the counter reaches 0.
3.16.4
3.16.5
Independent watchdog (IWDG)
The independent watchdog is based on a 12-bit downcounter and 8-bit prescaler. It is
clocked from an independent 37 kHz internal RC and, as it operates independently of the
main clock, it can operate in Stop and Standby modes. It can be used either as a watchdog
to reset the device when a problem occurs, or as a free-running timer for application timeout
management. It is hardware- or software-configurable through the option bytes. The counter
can be frozen in debug mode.
Window watchdog (WWDG)
The window watchdog is based on a 7-bit downcounter that can be set as free-running. It
can be used as a watchdog to reset the device when a problem occurs. It is clocked from
the main clock. It has an early warning interrupt capability and the counter can be frozen in
debug mode.
3.17
Communication interfaces
3.17.1
I²C bus
Up to two I²C bus interfaces can operate in multimaster and slave modes. They can support
standard and fast modes.
They support dual slave addressing (7-bit only) and both 7- and 10-bit addressing in master
mode. A hardware CRC generation/verification is embedded.
They can be served by DMA and they support SM Bus 2.0/PM Bus.
3.17.2
Universal synchronous/asynchronous receiver transmitter (USART)
The three USART interfaces are able to communicate at speeds of up to 4 Mbit/s. They
support IrDA SIR ENDEC and have LIN Master/Slave capability. The three USARTs provide
hardware management of the CTS and RTS signals and are ISO 7816 compliant.
All USART interfaces can be served by the DMA controller.
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Functional overview
STM32L151xC/C-A STM32L152xC/C-A
3.17.3
Serial peripheral interface (SPI)
Up to three SPIs are able to communicate at up to 16 Mbits/s in slave and master modes in
full-duplex and half-duplex communication modes. The 3-bit prescaler gives 8 master mode
frequencies and the frame is configurable to 8 bits or 16 bits. The hardware CRC
generation/verification supports basic SD Card/MMC modes.
The SPIs can be served by the DMA controller.
2
3.17.4
Inter-integrated sound (I S)
Two standard I2S interfaces (multiplexed with SPI2 and SPI3) are available. They can
operate in master or slave mode, and can be configured to operate with a 16-/32-bit
resolution as input or output channels. Audio sampling frequencies from 8 kHz up to 192
kHz are supported. When either or both of the I2S interfaces is/are configured in master
mode, the master clock can be output to the external DAC/CODEC at 256 times the
sampling frequency.
The I2Ss can be served by the DMA controller.
3.17.5
Universal serial bus (USB)
The STM32L151xC/C-A and STM32L152xC/C-A devices embed a USB device peripheral
compatible with the USB full-speed 12 Mbit/s. The USB interface implements a full-speed
(12 Mbit/s) function interface. It has software-configurable endpoint setting and supports
suspend/resume. The dedicated 48 MHz clock is generated from the internal main PLL (the
clock source must use a HSE crystal oscillator).
3.18
CRC (cyclic redundancy check) calculation unit
The CRC (cyclic redundancy check) calculation unit is used to get a CRC code from a 32-bit
data word and a fixed generator polynomial.
Among other applications, CRC-based techniques are used to verify data transmission or
storage integrity. In the scope of the EN/IEC 60335-1 standard, they offer a means of
verifying the Flash memory integrity. The CRC calculation unit helps compute a signature of
the software during runtime, to be compared with a reference signature generated at link-
time and stored at a given memory location.
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STM32L151xC/C-A STM32L152xC/C-A
Functional overview
3.19
Development support
3.19.1
Serial wire JTAG debug port (SWJ-DP)
The ARM SWJ-DP interface is embedded, and is a combined JTAG and serial wire debug
port that enables either a serial wire debug or a JTAG probe to be connected to the target.
The JTAG JTMS and JTCK pins are shared with SWDAT and SWCLK, respectively, and a
specific sequence on the JTMS pin is used to switch between JTAG-DP and SW-DP.
The JTAG port can be permanently disabled with a JTAG fuse.
3.19.2
Embedded Trace Macrocell™
The ARM® Embedded Trace Macrocell provides a greater visibility of the instruction and
data flow inside the CPU core by streaming compressed data at a very high rate from the
STM32L151xC/C-A and STM32L152xC/C-A device through a small number of ETM pins to
an external hardware trace port analyzer (TPA) device. The TPA is connected to a host
computer using USB, Ethernet, or any other high-speed channel. Real-time instruction and
data flow activity can be recorded and then formatted for display on the host computer
running debugger software. TPA hardware is commercially available from common
development tool vendors. It operates with third party debugger software tools.
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54
Pin descriptions
STM32L151xC/C-A STM32L152xC/C-A
4
Pin descriptions
Figure 3. STM32L15xZC LQFP144 pinout
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STM32L151xC/C-A STM32L152xC/C-A
Pin descriptions
Figure 4. STM32L15xQC UFBGA132 ballout
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1. This figure shows the package top view.
DocID026119 Rev 6
33/134
54
Pin descriptions
STM32L151xC/C-A STM32L152xC/C-A
Figure 5. STM32L15xVC-A LQFP100 pinout
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1. This figure shows the package top view.
34/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Pin descriptions
Figure 6. STM32L15xRC-A LQFP64 pinout
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1. This figure shows the package top view.
DocID026119 Rev 6
35/134
54
Pin descriptions
STM32L151xC/C-A STM32L152xC/C-A
Figure 7. STM32L15xRC WLCSP64 ballout
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1. This figure shows the package top view.
36/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Pin descriptions
Table 7. Legend/abbreviations used in the pinout table
Abbreviation Definition
Name
Unless otherwise specified in brackets below the pin name, the pin function
during and after reset is the same as the actual pin name
Pin name
S
I
Supply pin
Input only pin
Pin type
I/O
FT
TC
B
Input / output pin
5 V tolerant I/O
Standard 3.3 V I/O
I/O structure
Notes
Dedicated BOOT0 pin
RST
Bidirectional reset pin with embedded weak pull-up resistor
Unless otherwise specified by a note, all I/Os are set as floating inputs during
and after reset
Alternate
functions
Functions selected through GPIOx_AFR registers
Pin
functions
Additional
functions
Functions directly selected/enabled through peripheral registers
Table 8. STM32L151xC/C-A and STM32L152xC/C-A pin definitions
Pin functions
Pins
Main
Pin name
function(2)
(after reset)
Additional
functions
Alternate functions
TIM3_ETR/LCD_SEG38/
TRACECLK
1
B2
1
-
-
PE2
I/O FT
PE2
-
TIM3_CH1/LCD_SEG39/
TRACED0
2
3
4
A1
B1
C2
2
3
4
-
-
-
-
-
-
PE3
PE4
PE5
I/O FT
I/O FT
I/O FT
PE3
PE4
PE5
-
-
-
TIM3_CH2/TRACED1
TIM9_CH1/TRACED2
PE6-
WKUP3
WKUP3/
RTC_TAMP3
5
6
D2
E2
5
6
-
-
I/O FT
PE6
TIM9_CH2/TRACED3
-
(3)
1
C6
VLCD
S
-
VLCD
-
DocID026119 Rev 6
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54
Pin descriptions
STM32L151xC/C-A STM32L152xC/C-A
Pin functions
Table 8. STM32L151xC/C-A and STM32L152xC/C-A pin definitions (continued)
Pins
Main
Pin name
function(2)
(after reset)
Additional
Alternate functions
functions
WKUP2/
PC13-
WKUP2
RTC_TAMP1/
RTC_TS/
7
C1
7
2
C8
I/O FT
PC13
-
RTC_OUT
PC14-
8
9
D1
E1
8
9
3
4
B8
B7
I/O TC
I/O TC
PC14
PC15
-
-
OSC32_IN
OSC32_IN(4)
PC15-
OSC32_OUT
OSC32_OUT
10 D6
11 D5
12 D4
13 E4
14 F3
15 F4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PF0
PF1
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
PF0
PF1
-
-
-
-
PF2
PF2
-
-
PF3
PF3
-
-
PF4
PF4
-
-
PF5
PF5
-
-
16 F2 10
17 G2 11
VSS_5
VDD_5
PF6
S
S
-
-
VSS_5
VDD_5
PF6
-
-
-
-
18 G3
19 G4
-
-
I/O FT
I/O FT
TIM5_CH1/TIM5_ETR
ADC_IN27
ADC_IN28/
COMP1_INP
-
-
-
-
PF7
PF8
PF7
PF8
TIM5_CH2
ADC_IN29/
COMP1_INP
20 H4
-
-
-
I/O FT
I/O FT
I/O FT
I/O TC
TIM5_CH3
ADC_IN30/
COMP1_INP
21
22
J6
-
-
-
PF9
PF9
TIM5_CH4
ADC_IN31/
COMP1_INP
-
-
PF10
PF10
PH0
-
-
PH0-
23 F1 12
5
D8
OSC_IN
OSC_IN(5)
PH1-
24 G1 13
25 H2 14
26 H1 15
6
7
8
D7
C7
E8
I/O TC
I/O RST
I/O FT
PH1
NRST
PC0
-
OSC_OUT
-
OSC_OUT(5)
NRST
PC0
-
ADC_IN10/
COMP1_INP
LCD_SEG18
38/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Pin descriptions
Table 8. STM32L151xC/C-A and STM32L152xC/C-A pin definitions (continued)
Pins
Pin functions
Main
Pin name
function(2)
(after reset)
Additional
functions
Alternate functions
ADC_IN11/
27
28
J2 16
9
F8
PC1
I/O FT
PC1
LCD_SEG19
LCD_SEG20
COMP1_INP
ADC_IN12/
COMP1_INP
-
17 10 D6
PC2
PC2
I/O FT
I/O FT
PC2
PC2
ADC_IN12/
COMP1_INP
-
-
J3
-
-
-
-
-
-
LCD_SEG20
-
K1
I
-
-
ADC_IN13/
29 K2 18 11 F7
PC3
I/O TC
PC3
LCD_SEG21
COMP1_INP/
30
31
J1 19 12 E7
VSSA
VREF-
VREF+
VDDA
S
S
S
S
-
-
-
-
VSSA
VREF-
VREF+
VDDA
-
-
-
-
-
-
-
-
-
20
-
-
-
-
32 L1 21
33 M1 22 13 G8
WKUP1/
TIM2_CH1_ETR/
TIM5_CH1/ USART2_CTS
RTC_TAMP2/
34 L2 23 14 F6 PA0-WKUP1 I/O FT
PA0
ADC_IN0/
COMP1_INP
TIM2_CH2/TIM5_CH2/
USART2_RTS/
LCD_SEG0
ADC_IN1/
COMP1_INP/
OPAMP1_VINP
35 M2 24 15 E6
PA1
PA2
PA2
I/O FT
I/O FT
I/O FT
PA1
PA2
PA2
TIM2_CH3/TIM5_CH3/
TIM9_CH1/
USART2_TX/LCD_SEG1
ADC_IN2/
COMP1_INP/
OPAMP1_VINM
36
-
25 16 H8
TIM2_CH3/TIM5_CH3/
TIM9_CH1/
ADC_IN2/
COMP1_INP
-
-
K3
-
-
-
-
-
-
USART2_TX/LCD_SEG1
OPAMP1_VI
NM
OPAMP1_
VINM
M3
I
TC
-
-
TIM2_CH4/TIM5_CH4/
TIM9_CH2/
USART2_RX/LCD_SEG2 OPAMP1_VOUT
ADC_IN3/
COMP1_INP/
37 L3 26 17 G7
38 27 18 F5
PA3
I/O TC
PA3
-
VSS_4
S
-
VSS_4
-
-
DocID026119 Rev 6
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54
Pin descriptions
STM32L151xC/C-A STM32L152xC/C-A
Pin functions
Table 8. STM32L151xC/C-A and STM32L152xC/C-A pin definitions (continued)
Pins
Main
Pin name
function(2)
(after reset)
Additional
Alternate functions
functions
39
40
-
28 19 G6
VDD_4
PA4
S
-
VDD_4
PA4
-
-
ADC_IN4/
DAC_OUT1/
COMP1_INP
SPI1_NSS/SPI3_NSS/
I2S3_WS/USART2_CK
J4 29 20 H7
I/O TC
I/O TC
I/O FT
I/O FT
I/O FT
ADC_IN5/
DAC_OUT2/
COMP1_INP
TIM2_CH1_ETR/
SPI1_SCK
41 K4 30 21 E5
42 L4 31 22 G5
PA5
PA6
PA7
PA7
PA5
PA6
PA7
PA7
TIM3_CH1/TIM10_CH1/
SPI1_MISO/
ADC_IN6/
COMP1_INP/
OPAMP2_VINP
LCD_SEG3
TIM3_CH2/TIM11_CH1/
SPI1_MOSI/
ADC_IN7/
COMP1_INP/
OPAMP2_VINM
43
-
32 23 G4
LCD_SEG4
TIM3_CH2/TIM11_CH1/
SPI1_MOSI/
ADC_IN7/
COMP1_INP
-
-
J5
-
-
-
-
-
-
LCD_SEG4
OPAMP2_VI
NM
OPAMP2_V
INM
M4
I
TC
-
-
ADC_IN14/
COMP1_INP
44 K5 33 24 H6
45 L5 34 25 H5
PC4
PC5
I/O FT
I/O FT
PC4
PC5
LCD_SEG22
LCD_SEG23
ADC_IN15/
COMP1_INP
ADC_IN8/
COMP1_INP/
OPAMP2_VOUT/
VREF_OUT
46 M5 35 26 H4
PB0
I/O TC
PB0
PB1
TIM3_CH3/LCD_SEG5
ADC_IN9/
COMP1_INP/
VREF_OUT
47 M6 36 27 F4
48 L6 37 28 H3
PB1
PB2
I/O FT
I/O FT
TIM3_CH4/LCD_SEG6
BOOT1
PB2/
BOOT1
ADC_IN0b
49 K6
50 J7
-
-
-
-
-
-
-
-
-
-
-
-
PF11
PF12
VSS_6
VDD_6
I/O FT
I/O FT
PF11
PF12
VSS_6
VDD_6
-
-
-
-
ADC_IN1b
ADC_IN2b
51 E3
52 H3
S
S
-
-
-
-
40/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Pin descriptions
Table 8. STM32L151xC/C-A and STM32L152xC/C-A pin definitions (continued)
Pins
Pin functions
Main
Pin name
function(2)
(after reset)
Additional
functions
Alternate functions
53 K7
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PF13
PF14
PF15
PG0
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
PF13
PF14
PF15
PG0
-
-
-
-
-
ADC_IN3b
ADC_IN6b
ADC_IN7b
ADC_IN8b
ADC_IN9b
54
55
J8
J9
56 H9
57 G9
PG1
PG1
ADC_IN22/
COMP1_INP
58 M7 38
59 L7 39
60 M8 40
-
-
-
-
-
-
PE7
PE8
PE9
I/O TC
I/O TC
I/O TC
PE7
PE8
PE9
-
ADC_IN23/
COMP1_INP
-
ADC_IN24/
COMP1_INP
TIM2_CH1_ETR
61
62
-
-
-
-
-
-
-
-
VSS_7
VDD_7
S
S
-
-
VSS_7
VDD_7
-
-
-
-
ADC_IN25/
COMP1_INP
63 L8 41
-
-
PE10
I/O TC
PE10
TIM2_CH2
64 M9 42
65 L9 43
66 M10 44
67 M11 45
68 M12 46
-
-
-
-
-
-
-
-
-
-
PE11
PE12
PE13
PE14
PE15
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
PE11
PE12
PE13
PE14
PE15
TIM2_CH3
TIM2_CH4/SPI1_NSS
SPI1_SCK
-
-
-
-
-
SPI1_MISO
SPI1_MOSI
TIM2_CH3/I2C2_SCL/
USART3_TX/
69 L10 47 29 G3
70 L11 48 30 F3
PB10
PB11
I/O FT
I/O FT
PB10
PB11
-
-
LCD_SEG10
TIM2_CH4/ I2C2_SDA/
USART3_RX/ LCD_SEG11
71 F12 49 31 H2
72 G12 50 32 H1
VSS_1
VDD_1
S
S
-
-
VSS_1
VDD_1
-
-
-
-
TIM10_CH1/I2C2_SMBA/
SPI2_NSS/ I2S2_WS/
USART3_CK/ LCD_SEG12
ADC_IN18/
COMP1_INP
73 L12 51 33 G2
PB12
I/O FT
PB12
DocID026119 Rev 6
41/134
54
Pin descriptions
STM32L151xC/C-A STM32L152xC/C-A
Pin functions
Table 8. STM32L151xC/C-A and STM32L152xC/C-A pin definitions (continued)
Pins
Main
Pin name
function(2)
(after reset)
Additional
Alternate functions
functions
TIM9_CH1/SPI2_SCK/
I2S2_CK/
USART3_CTS/
LCD_SEG13
ADC_IN19/
COMP1_INP
74 K12 52 34 G1
PB13
I/O FT
PB13
TIM9_CH2/SPI2_MISO/
ADC_IN20/
COMP1_INP
75 K11 53 35 F2
76 K10 54 36 F1
PB14
PB15
I/O FT
I/O FT
PB14
PB15
USART3_RTS/
LCD_SEG14
TIM11_CH1/SPI2_MOSI/
ADC_IN21/
COMP1_INP/
RTC_REFIN
I2S2_SD/
LCD_SEG15
77 K9 55
78 K8 56
79 J12 57
80 J11 58
-
-
-
-
-
-
-
-
PD8
PD9
I/O FT
I/O FT
I/O FT
I/O FT
PD8
PD9
USART3_TX/LCD_SEG28
USART3_RX/LCD_SEG29
USART3_CK/LCD_SEG30
USART3_CTS/LCD_SEG31
-
-
-
-
PD10
PD11
PD10
PD11
TIM4_CH1/USART3_RTS/
LCD_SEG32
81 J10 59
82 H12 60
-
-
PD12
I/O FT
I/O FT
PD12
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PD13
VSS_8
VDD_8
PD14
PD15
PG2
PD13
VSS_8
VDD_8
PD14
PD15
PG2
TIM4_CH2/LCD_SEG33
-
83
84
-
-
-
-
S
S
-
-
-
-
-
-
85 H11 61
86 H10 62
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
S
TIM4_CH3/LCD_SEG34
-
TIM4_CH4/LCD_SEG35
-
87 G10
88 F9
89 F10
90 E9
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ADC_IN10b
PG3
PG3
ADC_IN11b
PG4
PG4
ADC_IN12b
PG5
PG5
-
-
-
-
-
-
91
92
93
-
-
-
PG6
PG6
PG7
PG7
PG8
PG8
94 F6
95 G6
VSS_9
VDD_9
VSS_9
VDD_9
S
42/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Pin descriptions
Table 8. STM32L151xC/C-A and STM32L152xC/C-A pin definitions (continued)
Pins
Pin functions
Main
Pin name
function(2)
(after reset)
Additional
functions
Alternate functions
TIM3_CH1/I2S2_MCK/
LCD_SEG24
96 E12 63 37 E1
97 E11 64 38 E2
PC6
PC7
I/O FT
I/O FT
PC6
PC7
-
-
TIM3_CH2/I2S3_MCK/
LCD_SEG25
98 E10 65 39 E3
99 D12 66 40 D1
PC8
PC9
I/O FT
I/O FT
PC8
PC9
TIM3_CH3/LCD_SEG26
TIM3_CH4/LCD_SEG27
-
-
USART1_CK/MCO/
LCD_COM0
100 D11 67 41 E4
PA8
I/O FT
PA8
-
101 D10 68 42 D2
102 C12 69 43 D3
103 B12 70 44 C1
104 A12 71 45 C2
PA9
PA10
PA11
PA12
I/O FT
I/O FT
I/O FT
I/O FT
PA9
PA10
PA11
PA12
USART1_TX / LCD_COM1
USART1_RX / LCD_COM2
USART1_CTS/ SPI1_MISO
USART1_RTS/ SPI1_MOSI
-
-
USB_DM
USB_DP
JTMS-
SWDIO
105 A11 72 46 D4
PA13
I/O FT
I/O FT
JTMS-SWDIO
-
106 C11 73
-
-
PH2
PH2
-
-
-
-
-
-
107 F11 74 47 B1
108 G11 75 48 A1
VSS_2
VDD_2
S
S
-
-
VSS_2
VDD_2
JTCK-
SWCLK
109 A10 76 49 B2
PA14
I/O FT
JTCK-SWCLK
-
TIM2_CH1_ETR/
SPI1_NSS/SPI3_NSS/
I2S3_WS/LCD_SEG17/
JTDI
110 A9 77 50 C3
PA15
I/O FT
JTDI
-
SPI3_SCK/I2S3_CK/
USART3_TX/
LCD_SEG28/LCD_SEG40/
LCD_COM4
111 B11 78 51 A2
112 C10 79 52 B3
PC10
PC11
I/O FT
I/O FT
PC10
PC11
-
-
SPI3_MISO/USART3_RX/
LCD_SEG29/LCD_SEG41/
LCD_COM5
DocID026119 Rev 6
43/134
54
Pin descriptions
STM32L151xC/C-A STM32L152xC/C-A
Pin functions
Table 8. STM32L151xC/C-A and STM32L152xC/C-A pin definitions (continued)
Pins
Main
Pin name
function(2)
(after reset)
Additional
Alternate functions
functions
SPI3_MOSI/I2S3_SD/
USART3_CK/LCD_SEG30/
-
113 B10 80 53 C4
PC12
I/O FT
PC12
LCD_SEG42/
LCD_COM6
TIM9_CH1/SPI2_NSS/
114 C9 81
115 B9 82
-
-
-
-
PD0
PD1
PD2
PD3
I/O FT
I/O FT
I/O FT
I/O FT
PD0
PD1
PD2
PD3
-
I2S2_WS
SPI2_SCK/I2S2_CK
-
-
-
TIM3_ETR/LCD_SEG31/
LCD_SEG43/LCD_COM7
116 C8 83 54 A3
117 B8 84
118 B7 85
119 A6 86
-
-
-
-
SPI2_MISO/USART2_CTS
SPI2_MOSI/I2S2_SD/
USART2_RTS/
PD4
I/O FT
PD4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PD5
VSS_10
VDD_10
PD6
I/O FT
PD5
VSS_10
VDD_10
PD6
USART2_TX
-
-
-
-
-
-
-
-
-
-
-
-
-
-
120 F7
121 G7
-
-
S
S
-
-
-
-
122 B6 87
123 A5 88
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
I/O FT
USART2_RX
PD7
PD7
TIM9_CH2/USART2_CK
124 D9
125 D8
-
-
-
-
-
-
-
-
-
PG9
PG9
-
-
-
-
-
-
-
-
-
PG10
PG11
PG12
PG13
PG14
VSS_11
VDD_11
PG15
PG10
PG11
PG12
PG13
PG14
VSS_11
VDD_11
PG15
126
-
127 D7
128 C7
129 C6
130
131
132
-
-
-
S
S
-
-
I/O FT
TIM2_CH2/SPI1_SCK/
SPI3_SCK/ I2S3_CK/
LCD_SEG7/JTDO
133 A8 89 55 A4
PB3
I/O FT
JTDO
COMP2_INM
44/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Pin descriptions
Table 8. STM32L151xC/C-A and STM32L152xC/C-A pin definitions (continued)
Pins
Pin functions
Main
Pin name
function(2)
(after reset)
Additional
functions
Alternate functions
TIM3_CH1/SPI1_MISO/
SPI3_MISO/
LCD_SEG8/NJTRST
134 A7 90 56 B4
PB4
I/O FT
I/O FT
NJTRST
COMP2_INP
TIM3_CH2/I2C1_SMBA/
SPI1_MOSI/
SPI3_MOSI/
I2S3_SD/LCD_SEG9
135 C5 91 57 A5
136 B5 92 58 B5
PB5
PB6
PB5
PB6
COMP2_INP
COMP2_INP
TIM4_CH1/I2C1_SCL/
USART1_TX/
I/O FT
I/O FT
TIM4_CH2/I2C1_SDA/
USART1_RX
COMP2_INP/
PVD_IN
137 B4 93 59 C5
138 A4 94 60 A6
PB7
PB7
BOOT0
I
B
BOOT0
-
-
TIM4_CH3/TIM10_CH1/
I2C1_SCL/
139 A3 95 61 D5
140 B3 96 62 B6
PB8
I/O FT
I/O FT
PB8
-
LCD_SEG16
TIM4_CH4/
TIM11_CH1/I2C1_SDA/
LCD_COM3
PB9
PE0
PB9
PE0
-
-
TIM4_ETR/TIM10_CH1/
LCD_SEG36
141 C3 97
142 A2 98
-
-
-
-
I/O FT
I/O FT
PE1
PE1
TIM11_CH1/LCD_SEG37
-
-
-
143 D3 99 63 A7
144 C4 100 64 A8
VSS_3
VDD_3
S
S
-
-
VSS_3
VDD_3
-
-
1. I = input, O = output, S = supply.
2. Function availability depends on the chosen device.
3. Applicable to STM32L152xD devices only. In STM32L151xD devices, this pin should be connected to VDD
.
4. The PC14 and PC15 I/Os are only configured as OSC32_IN/OSC32_OUT when the LSE oscillator is ON (by setting the
LSEON bit in the RCC_CSR register). The LSE oscillator pins OSC32_IN/OSC32_OUT can be used as general-purpose
PH0/PH1 I/Os, respectively, when the LSE oscillator is off (after reset, the LSE oscillator is off). The LSE has priority over
the GPIO function. For more details, refer to Using the OSC32_IN/OSC32_OUT pins as GPIO PC14/PC15 port pins
section in the STM32L151xx, STM32L152xx and STM32L162xx reference manual (RM0038).
5. The PH0 and PH1 I/Os are only configured as OSC_IN/OSC_OUT when the HSE oscillator is ON (by setting the HSEON
bit in the RCC_CR register). The HSE oscillator pins OSC_IN/OSC_OUT can be used as general-purpose PH0/PH1 I/Os,
respectively, when the HSE oscillator is off ( after reset, the HSE oscillator is off ). The HSE has priority over the GPIO
function.
DocID026119 Rev 6
45/134
54
Alternate functions
Table 9. Alternate function input/output
Digital alternate function number
AFIO0
AFIO1
TIM2
AFIO2 AFIO3
AFIO4 AFIO5 AFIO6
AFIO7
AFIO8 .. AFIO11 AFIO12 .. AFIO14
AFIO15
Port name
Alternate function
TIM9/
TIM3/4/5
SYSTEM
I2C1/2 SPI1/2
SPI3 USART1/2/3
-
LCD
-
CPRI
SYSTEM
10/11
EVENT
OUT
BOOT0
BOOT0
NRST
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
NRST
-
-
EVENT
OUT
PA0-WKUP1
TIM2_CH1_ETR TIM5_CH1
USART2_CTS
TIMx_IC1
EVENT
OUT
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PA8
PA9
PA10
PA11
-
TIM2_CH2
TIM5_CH2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
USART2_RTS
USART2_TX
USART2_RX
USART2_CK
-
-
-
-
-
-
-
-
-
-
-
-
SEG0
-
-
-
-
-
-
-
-
-
-
-
TIMx_IC2
TIMx_IC3
TIMx_IC4
TIMx_IC1
TIMx_IC2
TIMx_IC3
TIMx_IC4
TIMx_IC1
TIMx_IC2
TIMx_IC3
TIMx_IC4
EVENT
OUT
-
TIM2_CH3
TIM5_CH3 TIM9_CH1
TIM5_CH4 TIM9_CH2
-
SEG1
SEG2
-
EVENT
OUT
-
TIM2_CH4
-
SPI3_NSS
I2S3_WS
EVENT
OUT
-
-
-
-
-
-
SPI1_NSS
EVENT
OUT
-
TIM2_CH1_ETR
SPI1_SCK
-
-
-
-
-
-
-
EVENT
OUT
-
-
-
-
-
-
-
TIM3_CH1 TIM10_CH1
TIM3_CH2 TIM11_ CH1
SPI1_MISO
-
SEG3
SEG4
COM0
COM1
COM2
-
EVENT
OUT
-
SPI1_MOSI
-
EVENT
OUT
MCO
-
-
-
-
-
-
-
-
-
USART1_CK
USART1_TX
USART1_RX
USART1_CTS
EVENT
OUT
-
-
-
-
EVENT
OUT
-
EVENT
OUT
SPI1_MISO
Table 9. Alternate function input/output (continued)
Digital alternate function number
AFIO0
AFIO1
TIM2
AFIO2 AFIO3
AFIO4 AFIO5 AFIO6
AFIO7
AFIO8 .. AFIO11 AFIO12 .. AFIO14
AFIO15
Port name
Alternate function
TIM9/
TIM3/4/5
SYSTEM
I2C1/2 SPI1/2
SPI3 USART1/2/3
-
LCD
-
CPRI
SYSTEM
10/11
EVENT
OUT
PA12
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
SPI1_MOSI
-
-
-
USART1_RTS
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
TIMx_IC1
EVENT
OUT
PA13
PA14
PA15
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PB8
PB9
PB10
JTMS-SWDIO
-
-
-
-
TIMx_IC2
EVEN
TOUT
JTCK-SWCLK
-
-
-
-
-
TIMx_IC3
SPI3_NSS
I2S3_WS
EVEN
TOUT
JTDI
TIM2_CH1_ETR
-
SPI1_NSS
-
SEG17
SEG5
SEG6
-
TIMx_IC4
EVEN
TOUT
-
-
TIM3_CH3
TIM3_CH4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
EVENT
OUT
-
-
-
-
-
-
EVENT
OUT
BOOT1
-
-
-
SPI3_SCK
I2S3_CK
EVENT
OUT
JTDO
TIM2_CH2
-
SPI1_SCK
-
SEG7
SEG8
SEG9
-
EVENT
OUT
NJTRST
-
TIM3_CH1
TIM3_CH2
TIM4_CH1
TIM4_CH2
SPI1_MISO SPI3_MISO
-
I2C1_
SMBA
SPI3_MOSI
SPI1_MOSI
EVENT
OUT
-
-
-
-
-
-
-
-
I2S3_SD
EVENT
OUT
-
I2C1_SCL
-
-
-
-
-
-
-
-
-
-
USART1_TX
EVENT
OUT
-
I2C1_SDA
USART1_RX
-
EVENT
OUT
-
-
TIM4_CH3 TIM10_CH1 I2C1_SCL
TIM4_CH4 TIM11_CH1 I2C1_SDA
-
SEG16
COM3
SEG10
EVENT
OUT
-
EVENT
OUT
TIM2_CH3
-
-
I2C2_SCL
USART3_TX
-
Table 9. Alternate function input/output (continued)
Digital alternate function number
AFIO0
AFIO1
TIM2
AFIO2 AFIO3
AFIO4 AFIO5 AFIO6
AFIO7
AFIO8 .. AFIO11 AFIO12 .. AFIO14
AFIO15
Port name
Alternate function
TIM9/
TIM3/4/5
SYSTEM
I2C1/2 SPI1/2
SPI3 USART1/2/3
-
LCD
-
CPRI
SYSTEM
10/11
EVENT
OUT
PB11
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
TIM2_CH4
-
-
I2C2_SDA
-
-
USART3_RX
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
SEG11
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
SPI2_NSS
I2S2_WS
EVENT
OUT
PB12
PB13
PB14
PB15
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PC8
PC9
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
TIM10_CH1 I2C2_SMBA
-
USART3_CK
SEG12
SEG13
SEG14
SEG15
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SPI2_SCK
I2S2_CK
EVENT
OUT
-
TIM9_CH1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
USART3_CTS
EVENT
OUT
-
TIM9_CH2
SPI2_MISO
-
USART3_RTS
SPI2_MOSI
I2S2_SD
EVENT
OUT
-
TIM11_CH1
-
-
-
-
-
-
-
-
-
-
-
-
EVENT
OUT
-
-
-
-
-
-
-
-
-
-
-
-
TIMx_IC1
EVENT
OUT
-
-
-
TIMx_IC2
TIMx_IC3
TIMx_IC4
TIMx_IC1
TIMx_IC2
TIMx_IC3
TIMx_IC4
TIMx_IC1
TIMx_IC2
EVENT
OUT
-
-
-
EVENT
OUT
-
-
-
EVENT
OUT
-
-
-
EVENT
OUT
-
-
-
EVENT
OUT
TIM3_CH1
TIM3_CH2
TIM3_CH3
TIM3_CH4
I2S2_MCK
-
EVENT
OUT
-
-
-
I2S3_MCK
EVENT
OUT
-
-
EVENT
OUT
Table 9. Alternate function input/output (continued)
Digital alternate function number
AFIO0
AFIO1
AFIO2 AFIO3
AFIO4 AFIO5 AFIO6
AFIO7
AFIO8 .. AFIO11 AFIO12 .. AFIO14
AFIO15
Port name
Alternate function
TIM9/
TIM3/4/5
SYSTEM
TIM2
I2C1/2 SPI1/2
SPI3 USART1/2/3
-
LCD
-
CPRI
SYSTEM
10/11
COM4/
SEG28/
SEG40
SPI3_SCK
I2S3_CK
EVENT
OUT
PC10
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
USART3_TX
TIMx_IC3
COM5/
SEG29
/SEG41
EVENT
OUT
PC11
PC12
SPI3_MISO USART3_RX
TIMx_IC4
TIMx_IC1
COM6/
SEG30/
SEG42
SPI3_MOSI
USART3_CK
I2S3_SD
EVENT
OUT
EVENT
OUT
PC13-WKUP2
PC14 OSC32_IN
PC15 OSC32_OUT
PD0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
TIMx_IC2
TIMx_IC3
TIMx_IC4
TIMx_IC1
TIMx_IC2
EVENT
OUT
-
EVENT
OUT
-
SPI2_NSS
I2S2_WS
EVENT
OUT
TIM9_CH1
-
SPI2 SCK
I2S2_CK
EVENT
OUT
PD1
COM7/
SEG31/
SEG43
EVENT
OUT
PD2
-
-
TIM3_ETR
-
-
-
-
-
TIMx_IC3
EVENT
OUT
PD3
PD4
PD5
PD6
PD7
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
SPI2_MISO -
USART2_CTS
USART2_RTS
USART2_TX
USART2_RX
USART2_CK
-
-
-
-
-
-
-
-
-
-
TIMx_IC4
TIMx_IC1
TIMx_IC2
TIMx_IC3
TIMx_IC4
SPI2_MOSI
I2S2_SD
EVENT
OUT
-
-
EVENT
OUT
-
-
-
-
-
-
-
EVENT
OUT
-
EVENT
OUT
TIM9_CH2
Table 9. Alternate function input/output (continued)
Digital alternate function number
AFIO0
AFIO1
TIM2
AFIO2 AFIO3
AFIO4 AFIO5 AFIO6
AFIO7
AFIO8 .. AFIO11 AFIO12 .. AFIO14
AFIO15
Port name
Alternate function
TIM9/
TIM3/4/5
SYSTEM
I2C1/2 SPI1/2
SPI3 USART1/2/3
-
LCD
-
CPRI
SYSTEM
10/11
EVENT
OUT
PD8
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
USART3_TX
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
SEG28
SEG29
SEG30
SEG31
SEG32
SEG33
SEG34
SEG35
SEG36
SEG37
SEG 38
SEG 39
-
TIMx_IC1
EVENT
OUT
PD9
-
-
USART3_RX
TIMx_IC2
TIMx_IC3
TIMx_IC4
TIMx_IC1
TIMx_IC2
TIMx_IC3
TIMx_IC4
TIMx_IC1
TIMx_IC2
TIMx_IC3
TIMx_IC4
TIMx_IC1
TIMx_IC2
TIMx_IC3
EVENT
OUT
PD10
PD11
PD12
PD13
PD14
PD15
PE0
-
-
USART3_CK
EVENT
OUT
-
-
USART3_CTS
EVENT
OUT
-
TIM4_CH1
TIM4_CH2
TIM4_CH3
TIM4_CH4
USART3_RTS
EVENT
OUT
-
-
-
-
-
-
-
-
-
-
-
EVENT
OUT
-
-
EVENT
OUT
EVENT
OUT
-
TIM4_ETR TIM10_CH1
EVENT
OUT
PE1
-
-
TIM11_CH1
EVENT
OUT
PE2
TRACECK
TRACED0
TRACED1
TRACED2
TRACED3
TIM3_ETR
-
EVENT
OUT
PE3
TIM3_CH1
-
-
EVENT
OUT
PE4
TIM3_CH2
EVENT
OUT
PE5
-
-
TIM9_CH1
TIM9_CH2
-
EVENT
OUT
PE6-WKUP3
-
-
Table 9. Alternate function input/output (continued)
Digital alternate function number
AFIO0
AFIO1
TIM2
AFIO2 AFIO3
AFIO4 AFIO5 AFIO6
AFIO7
AFIO8 .. AFIO11 AFIO12 .. AFIO14
AFIO15
Port name
Alternate function
TIM9/
TIM3/4/5
SYSTEM
I2C1/2 SPI1/2
SPI3 USART1/2/3
-
LCD
-
CPRI
SYSTEM
10/11
EVENT
OUT
PE7
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
TIMx_IC4
EVENT
OUT
PE8
-
-
TIMx_IC1
EVENT
OUT
PE9
TIM2_CH1_ETR
-
TIMx_IC2
EVENT
OUT
PE10
PE11
PE12
PE13
PE14
PE15
PF0
TIM2_CH2
-
TIMx_IC3
EVENT
OUT
TIM2_CH3
-
TIMx_IC4
EVENT
OUT
TIM2_CH4
SPI1_NSS
TIMx_IC1
EVENT
OUT
-
-
-
-
-
-
-
-
-
SPI1_SCK
TIMx_IC2
EVENT
OUT
SPI1_MISO
TIMx_IC3
EVENT
OUT
SPI1_MOSI
TIMx_IC4
EVENT
OUT
-
-
-
-
-
-
-
-
-
-
-
-
EVENT
OUT
PF1
EVENT
OUT
PF2
EVENT
OUT
PF3
EVENT
OUT
PF4
EVENT
OUT
PF5
Table 9. Alternate function input/output (continued)
Digital alternate function number
AFIO0
AFIO1
TIM2
AFIO2 AFIO3
AFIO4 AFIO5 AFIO6
AFIO7
AFIO8 .. AFIO11 AFIO12 .. AFIO14
AFIO15
Port name
Alternate function
TIM9/
TIM3/4/5
SYSTEM
I2C1/2 SPI1/2
SPI3 USART1/2/3
-
LCD
-
CPRI
SYSTEM
10/11
EVENT
OUT
PF6
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
TIM5_ETR
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
EVENT
OUT
PF7
TIM5_CH2
EVENT
OUT
PF8
TIM5_CH3
EVENT
OUT
PF9
TIM5_CH4
EVENT
OUT
PF10
PF11
PF12
PF13
PF14
PF15
PG0
PG1
PG2
PG3
PG4
-
-
-
-
-
-
-
-
-
-
-
EVENT
OUT
EVENT
OUT
EVENT
OUT
EVENT
OUT
EVENT
OUT
EVENT
OUT
EVENT
OUT
EVENT
OUT
EVENT
OUT
EVENT
OUT
Table 9. Alternate function input/output (continued)
Digital alternate function number
AFIO0
AFIO1
TIM2
AFIO2 AFIO3
AFIO4 AFIO5 AFIO6
AFIO7
AFIO8 .. AFIO11 AFIO12 .. AFIO14
AFIO15
Port name
Alternate function
TIM9/
TIM3/4/5
SYSTEM
I2C1/2 SPI1/2
SPI3 USART1/2/3
-
LCD
-
CPRI
SYSTEM
10/11
EVENT
OUT
PG5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
EVENT
OUT
PG6
-
-
-
EVENT
OUT
PG7
EVENT
OUT
PG8
EVENT
OUT
PG9
EVENT
OUT
PG10
PG11
PG12
PG13
PG14
PG15
EVENT
OUT
-
EVENT
OUT
EVENT
OUT
EVENT
OUT
EVENT
OUT
-
PH0OSC_IN
PH1OSC_OUT
PH2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Memory mapping
STM32L151xC/C-A STM32L152xC/C-A
5
Memory mapping
Figure 8. Memory map
ꢎXꢅꢎꢎꢇ ꢆꢏ&&
ꢎXꢅꢎꢎꢇ ꢆꢅꢎꢎ
$-!ꢇ
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ꢎXꢅꢎꢎꢇ ꢆꢎꢎꢎ
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ꢎXꢅꢎꢎꢇ ꢃꢎꢎꢎ
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RESERVED
ꢃ
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RESERVED
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24#
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54/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Electrical characteristics
6
Electrical characteristics
6.1
Parameter conditions
Unless otherwise specified, all voltages are referenced to V
.
SS
6.1.1
Minimum and maximum values
Unless otherwise specified the minimum and maximum values are guaranteed in the worst
conditions of ambient temperature, supply voltage and frequencies by tests in production on
100% of the devices with an ambient temperature at T = 25 °C and T = T max (given by
A
A
A
the selected temperature range).
Data based on characterization results, design simulation and/or technology characteristics
are indicated in the table footnotes. Based on characterization, the minimum and maximum
values refer to sample tests and represent the mean value plus or minus three times the
standard deviation (mean ±3σ).
6.1.2
6.1.3
Typical values
Unless otherwise specified, typical data are based on T = 25 °C, V = 3.6 V (for the
A
DD
1.65 V ≤V ≤3.6 V voltage range). They are given only as design guidelines and are not
DD
tested.
Typical ADC accuracy values are determined by characterization of a batch of samples from
a standard diffusion lot over the full temperature range, where 95% of the devices have an
error less than or equal to the value indicated (mean ±2σ).
Typical curves
Unless otherwise specified, all typical curves are given only as design guidelines and are
not tested.
6.1.4
6.1.5
Loading capacitor
The loading conditions used for pin parameter measurement are shown in Figure 9.
Pin input voltage
The input voltage measurement on a pin of the device is described in Figure 10.
Figure 9. Pin loading conditions
Figure 10. Pin input voltage
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DocID026119 Rev 6
55/134
113
Electrical characteristics
STM32L151xC/C-A STM32L152xC/C-A
6.1.6
Power supply scheme
Figure 11. Power supply scheme
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56/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Electrical characteristics
6.1.7
Optional LCD power supply scheme
Figure 12. Optional LCD power supply scheme
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9''
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1. Option 1: LCD power supply is provided by a dedicated VLCD supply source, VSEL switch is open.
2. Option 2: LCD power supply is provided by the internal step-up converter, VSEL switch is closed, an
external capacitance is needed for correct behavior of this converter.
6.1.8
Current consumption measurement
Figure 13. Current consumption measurement scheme
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57/134
113
Electrical characteristics
STM32L151xC/C-A STM32L152xC/C-A
6.2
Absolute maximum ratings
Stresses above the absolute maximum ratings listed in Table 10: Voltage characteristics,
Table 11: Current characteristics, and Table 12: Thermal characteristics may cause
permanent damage to the device. These are stress ratings only and functional operation of
the device at these conditions is not implied. Exposure to maximum rating conditions for
extended periods may affect device reliability.
Table 10. Voltage characteristics
Symbol
Ratings
Min
Max
Unit
External main supply voltage
VDD–VSS
–0.3
4.0
(1)
(including VDDA and VDD
)
V
Input voltage on five-volt tolerant pin
Input voltage on any other pin
VSS −0.3
VDD+4.0
4.0
(2)
VIN
VSS −0.3
|ΔVDDx
|
Variations between different VDD power pins
Variations between all different ground pins(3)
-
-
-
50
mV
V
|VSSX −VSS
|
50
V
REF+ –VDDA Allowed voltage difference for VREF+ > VDDA
0.4
Electrostatic discharge voltage
(human body model)
VESD(HBM)
see Section 6.3.11
1. All main power (VDD, VDDA) and ground (VSS, VSSA) pins must always be connected to the external power supply, in the
permitted range.
2. VIN maximum must always be respected. Refer to Table 11 for maximum allowed injected current values.
3. Include VREF- pin.
Table 11. Current characteristics
Symbol
Ratings
Max.
Unit
IVDD(Σ)
Total current into sum of all VDD_x power lines (source)(1)
Total current out of sum of all VSS_x ground lines (sink)(1)
Maximum current into each VDD_x power pin (source)(1)
Maximum current out of each VSS_x ground pin (sink)(1)
Output current sunk by any I/O and control pin
100
100
70
(2)
IVSS(Σ)
IVDD(PIN)
IVSS(PIN)
-70
25
IIO
Output current sourced by any I/O and control pin
Total output current sunk by sum of all IOs and control pins(2)
Total output current sourced by sum of all IOs and control pins(2)
Injected current on five-volt tolerant I/O(4), RST and B pins
Injected current on any other pin (5)
- 25
60
mA
ΣIIO(PIN)
-60
-5/+0
± 5
(3)
IINJ(PIN)
ΣIINJ(PIN)
Total injected current (sum of all I/O and control pins)(6)
± 25
1. All main power (VDD, VDDA) and ground (VSS, VSSA) pins must always be connected to the external power supply, in the
permitted range.
2. This current consumption must be correctly distributed over all I/Os and control pins. The total output current must not be
sunk/sourced between two consecutive power supply pins referring to high pin count LQFP packages.
3. Negative injection disturbs the analog performance of the device. See note in Section 6.3.17.
58/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Electrical characteristics
4. Positive current injection is not possible on these I/Os. A negative injection is induced by VIN<VSS. IINJ(PIN) must never be
exceeded. Refer to Table 10 for maximum allowed input voltage values.
5. A positive injection is induced by VIN > VDD while a negative injection is induced by VIN < VSS. IINJ(PIN) must never be
exceeded. Refer to Table 10: Voltage characteristics for the maximum allowed input voltage values.
6. When several inputs are submitted to a current injection, the maximum ΣIINJ(PIN) is the absolute sum of the positive and
negative injected currents (instantaneous values).
Table 12. Thermal characteristics
Symbol
Ratings
Storage temperature range
Maximum junction temperature
Value
Unit
TSTG
TJ
–65 to +150
150
°C
°C
6.3
Operating conditions
6.3.1
General operating conditions
Table 13. General operating conditions
Symbol
Parameter
Conditions
Min
Max
Unit
fHCLK Internal AHB clock frequency
fPCLK1 Internal APB1 clock frequency
fPCLK2 Internal APB2 clock frequency
-
0
0
32
32
32
3.6
-
MHz
-
0
BOR detector disabled
1.65
BOR detector enabled, at
power on
1.8
3.6
3.6
3.6
VDD
Standard operating voltage
V
BOR detector disabled, after
power on
1.65
1.65
Analog operating voltage
(ADC and DAC not used)
Must be the same voltage as
(1)
VDDA
V
V
(2)
VDD
Analog operating voltage
(ADC or DAC used)
1.8
3.6
FT pins; 2.0 V ≤VDD
FT pins; VDD < 2.0 V
BOOT0 pin
-0.3
5.5(3)
-0.3
5.25(3)
VIN
I/O input voltage
0
5.5
Any other pin
-0.3
V
DD+0.3
500
465
435
333
435
85
LQFP144 package
LQFP100 package
LQFP64 package
UFBGA132
-
-
Power dissipation at TA = 85 °C for
suffix 6 or TA = 105 °C for suffix 7(4)
PD
TA
-
-
mW
WLCSP64 package
-
Ambient temperature for 6 suffix version Maximum power dissipation(5)
–40
–40
°C
Ambient temperature for 7 suffix version Maximum power dissipation
105
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Table 13. General operating conditions (continued)
Symbol
Parameter
Conditions
6 suffix version
7 suffix version
Min
Max
Unit
–40
–40
105
110
TJ
Junction temperature range
°C
1. When the ADC is used, refer to Table 55: ADC characteristics.
2. It is recommended to power VDD and VDDA from the same source. A maximum difference of 300 mV between VDD and
VDDA can be tolerated during power-up .
3. To sustain a voltage higher than VDD+0.3V, the internal pull-up/pull-down resistors must be disabled.
4. If TA is lower, higher PD values are allowed as long as TJ does not exceed TJ max (see Table 71: Thermal characteristics
on page 129).
5. In low-power dissipation state, TA can be extended to -40°C to 105°C temperature range as long as TJ does not exceed TJ
max (see Table 71: Thermal characteristics on page 129).
6.3.2
Embedded reset and power control block characteristics
The parameters given in the following table are derived from the tests performed under the
conditions summarized in Table 13.
Table 14. Embedded reset and power control block characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
BOR detector enabled
BOR detector disabled
BOR detector enabled
BOR detector disabled
0
0
-
∞
1000
∞
VDD rise time rate
-
(1)
tVDD
µs/V
20
-
VDD fall time rate
0
-
1000
3.3
VDD rising, BOR enabled
-
2
(1)
TRSTTEMPO
Reset temporization
ms
VDD rising, BOR disabled(2)
0.4
1
0.7
1.5
1.5
1.7
1.76
1.93
2.03
2.30
2.41
1.6
Falling edge
1.65
1.65
1.74
1.8
Power on/power down reset
threshold
VPOR/PDR
Rising edge
1.3
1.67
1.69
1.87
1.96
2.22
2.31
Falling edge
VBOR0
Brown-out reset threshold 0
Brown-out reset threshold 1
Brown-out reset threshold 2
Rising edge
V
Falling edge
1.97
2.07
2.35
2.44
VBOR1
Rising edge
Falling edge
VBOR2
Rising edge
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Table 14. Embedded reset and power control block characteristics (continued)
Symbol
Parameter
Conditions
Falling edge
Min
Typ
Max
Unit
2.45
2.54
2.68
2.78
1.8
2.55
2.66
2.8
2.6
2.7
VBOR3
Brown-out reset threshold 3
Rising edge
Falling edge
Rising edge
Falling edge
Rising edge
Falling edge
Rising edge
Falling edge
Rising edge
Falling edge
Rising edge
Falling edge
Rising edge
Falling edge
Rising edge
Falling edge
Rising edge
BOR0 threshold
2.85
2.95
1.88
1.99
2.09
2.18
2.28
2.38
2.48
2.58
2.69
2.79
2.88
2.99
3.09
3.20
-
VBOR4
VPVD0
VPVD1
VPVD2
VPVD3
VPVD4
VPVD5
VPVD6
Brown-out reset threshold 4
2.9
1.85
1.94
2.04
2.14
2.24
2.34
2.44
2.54
2.64
2.74
2.83
2.94
3.05
3.15
40
Programmable voltage detector
threshold 0
1.88
1.98
2.08
2.20
2.28
2.39
2.47
2.57
2.68
2.77
2.87
2.97
3.08
-
PVD threshold 1
PVD threshold 2
PVD threshold 3
PVD threshold 4
PVD threshold 5
PVD threshold 6
V
Vhyst
Hysteresis voltage
mV
All BOR and PVD
thresholds excepting BOR0
-
100
-
1. Guaranteed by characterization results.
2. Valid for device version without BOR at power up. Please see option “D” in Ordering information scheme for more details.
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6.3.3
Embedded internal reference voltage
The parameters given in Table 16 are based on characterization results, unless otherwise
specified.
Table 15. Embedded internal reference voltage calibration values
Calibration value name
Description
Memory address
Raw data acquired at
VREFINT_CAL
temperature of 30 °C ±5 °C
0x1FF8 00F8 - 0x1FF8 00F9
VDDA= 3 V ±10 mV
Table 16. Embedded internal reference voltage
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
(1)
VREFINT out
IREFINT
Internal reference voltage
– 40 °C < TJ < +110 °C 1.202 1.224 1.242
V
Internal reference current
consumption
-
-
-
-
-
1.4
2
2.3
3
µA
ms
V
TVREFINT
Internal reference startup time
VDDA and VREF+ voltage during
VREFINT factory measure
VVREF_MEAS
2.99
3
3.01
Including uncertainties
due to ADC and
VDDA/VREF+ values
Accuracy of factory-measured VREF
value(2)
AVREF_MEAS
-
-
-
±5
mV
ppm/°
C
(3)
TCoeff
Temperature coefficient
–40 °C < TJ < +110 °C
25
100
(3)
ACoeff
Long-term stability
Voltage coefficient
1000 hours, T= 25 °C
3.0 V < VDDA < 3.6 V
-
-
-
-
1000
2000
ppm
(3)
VDDCoeff
ppm/V
ADC sampling time when reading
the internal reference voltage
(3)
TS_vrefint
-
-
-
4
-
-
-
-
µs
µs
µA
Startup time of reference voltage
buffer for ADC
(3) (4)
TADC_BUF
10
25
Consumption of reference voltage
buffer for ADC
(3)
IBUF_ADC
-
13.5
(3)
IVREF_OUT
VREF_OUT output current (5)
-
-
-
-
-
-
1
µA
pF
(3)
CVREF_OUT
VREF_OUT output load
50
Consumption of reference voltage
buffer for VREF_OUT and COMP
(3)
ILPBUF
-
-
730
1200
nA
(3)
VREFINT_DIV1
1/4 reference voltage
1/2 reference voltage
3/4 reference voltage
-
-
-
24
49
74
25
50
75
26
51
76
%
VREFIN
(3)
VREFINT_DIV2
T
(3)
VREFINT_DIV3
1. Guaranteed by test in production.
2. The internal VREF value is individually measured in production and stored in dedicated EEPROM bytes.
3. Guaranteed by characterization results.
4. Shortest sampling time can be determined in the application by multiple iterations.
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5. To guarantee less than 1% VREF_OUT deviation.
6.3.4
Supply current characteristics
The current consumption is a function of several parameters and factors such as the
operating voltage, temperature, I/O pin loading, device software configuration, operating
frequencies, I/O pin switching rate, program location in memory and executed binary code.
The current consumption is measured as described in Figure 13: Current consumption
measurement scheme.
All Run-mode current consumption measurements given in this section are performed with a
reduced code that gives a consumption equivalent to the Dhrystone 2.1 code, unless
otherwise specified. The current consumption values are derived from tests performed
under ambient temperature T = 25 °C and V supply voltage conditions summarized in
A
DD
Table 13: General operating conditions, unless otherwise specified.
The MCU is placed under the following conditions:
•
•
•
All I/O pins are configured in analog input mode
All peripherals are disabled except when explicitly mentioned.
The Flash memory access time, 64-bit access and prefetch is adjusted depending on
f
frequency and voltage range to provide the best CPU performance.
HCLK
•
•
When the peripherals are enabled f
= f
= f
.
APB1
APB2
AHB
When PLL is ON, the PLL inputs are equal to HSI = 16 MHz (if internal clock is used) or
HSE = 16 MHz (if HSE bypass mode is used).
•
The HSE user clock applied to OSCI_IN input follows the characteristic specified in
Table 26: High-speed external user clock characteristics.
•
•
For maximum current consumption V = V
= 3.6 V is applied to all supply pins.
DD
DDA
For typical current consumption V = V
= 3.0 V is applied to all supply pins if not
DDA
DD
specified otherwise.
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Table 17. Current consumption in Run mode, code with data processing running from Flash
fHCLK
[MHz]
Max
Symbol
Parameter
Conditions
Typ
Unit
(1)
1
2
290
505
500
750
Range3,
VCORE=1.2 V
VOS[1:0]=11
μA
4
955 1200
4
1.15
2.3
1.6
2.9
5.2
3.5
6.5
12
fHSE = fHCLK up to 16MHz,
Range2,
included fHSE = fHCLK/2 above VCORE=1.5 V
8
16 MHz (PLL ON)(2)
VOS[1:0]=10
16
8
4.25
2.65
5.35
10.5
Range1,
VCORE=1.8 V
16
32
IDD (Run Supply current in
VOS[1:0]=01
Run mode code
mA
from
executed from Flash
Flash)
Range2,
VCORE=1.5 V
VOS[1:0]=10
16
32
4.35
5.2
HSI clock source (16 MHz)
Range1,
VCORE=1.8 V
VOS[1:0]=01
10.5 12.3
MSI clock, 65 kHZ
MSI clock, 524 kHZ
MSI clock, 4.2 MHZ
0.065
0.524
4.2
46
130
250
Range3,
VCORE=1.2 V
VOS[1:0]=11
160
μA
965 1200
1. Guaranteed by characterization results, unless otherwise specified.
2. Oscillator bypassed (HSEBYP = 1 in RCC_CR register).
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Table 18. Current consumption in Run mode, code with data processing running from RAM
Symbol
Parameter
Conditions
fHCLK
Typ
Max Unit
1
2
230
415
470
Range3,
CORE=1.2 V
VOS[1:0]=11
V
780
μA
mA
μA
4
800 1200
0.935 1.5
4
fHSE = fHCLK up to 16 MHz,
Range2,
included fHSE = fHCLK/2 above
VCORE=1.5 V
8
1.9
3
5
16MHz (PLL ON)(1)
VOS[1:0]=10
16
8
3.75
2.25
3.5
Range1,
Supply current in
Run mode code
executed from
RAM
VCORE=1.8 V
16
32
4.45 5.55
9.05 10.9
IDD (Run
VOS[1:0]=01
from RAM)
Range2,
VCORE=1.5 V
16
32
3.75
4.8
VOS[1:0]=10
HSI clock source (16 MHz)
Range1,
VCORE=1.8 V
8.95 11.7
VOS[1:0]=01
MSI clock, 65 kHZ
MSI clock, 524 kHZ
MSI clock, 4.2 MHZ
0.065
0.524
4.2
43.5
135
100
215
Range3,
VCORE=1.2 V
VOS[1:0]=11
835 1100
1. Oscillator bypassed (HSEBYP = 1 in RCC_CR register).
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Table 19. Current consumption in Sleep mode
Max
Symbol
Parameter
Conditions
fHCLK
Typ
Unit
(1)
1
2
58
220
300
380
500
700
1100
800
1250
Range3,
Vcore=1.2 V
VOS[1:0]=11
96
4
170
210
400
810
485
955
4
fHSE = fHCLK up to 16 MHz, Range2,
included fHSE = fHCLK/2
Vcore=1.5 V
8
above 16 MHz (PLL ON)(2) VOS[1:0]=10
16
8
Range1,
Vcore=1.8 V
VOS[1:0]=01
Supply current in
Sleep mode, code
executed from
RAM, Flash
16
32
2100 2700
Range2,
switched OFF
Vcore=1.5 V
16
32
835 1100
VOS[1:0]=10
HSI clock source (16 MHz)
Range1,
Vcore=1.8 V
VOS[1:0]=01
2100 2700
MSI clock, 65 kHZ
Range3,
0.065
0.524
4.2
1
18.5
37
72
92
MSI clock, 524 kHZ
Vcore=1.2 V
VOS[1:0]=11
MSI clock, 4.2 MHZ
180
75
273
250
300
380
500
700
1120
800
1300
IDD(SLEEP)
μA
Range3,
Vcore=1.2 V
VOS[1:0]=11
2
115
200
230
430
840
500
980
4
4
fHSE = fHCLK up to 16 MHz, Range2,
included fHSE = fHCLK/2
Vcore=1.5 V
8
above 16MHz (PLL ON)(2) VOS[1:0]=10
16
8
Range1,
Vcore=1.8 V
VOS[1:0]=01
16
32
Supply current in
Sleep mode, Flash
switched ON
2100 2700
Range2,
Vcore=1.5 V
16
32
860 1160
VOS[1:0]=10
HSI clock source (16 MHz)
Range1,
Vcore=1.8 V
VOS[1:0]=01
2150 2800
MSI clock, 65 kHZ
Range3,
0.065
0.524
4.2
33,5
53
90
MSI clock, 524 kHZ
Vcore=1.2 V
VOS[1:0]=11
110
290
MSI clock, 4.2 MHZ
200
1. Guaranteed by characterization results, unless otherwise specified.
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2. Oscillator bypassed (HSEBYP = 1 in RCC_CR register)
Table 20. Current consumption in Low-power run mode
Symbol Parameter
Conditions
Typ
Max(1)
Unit
TA = -40 °C to 25 °C
TA = 85 °C
11
26
53
18
33
60
36
39
50
78
36
53
81
44
61
89
64
68
80
101
14
32
MSI clock, 65 kHz
fHCLK = 32 kHz
All
TA = 105 °C
72
peripherals
OFF, code
executed
from RAM,
Flash
switched
OFF, VDD
from 1.65 V
to 3.6 V
TA =-40 °C to 25 °C
TA = 85 °C
21
MSI clock, 65 kHz
fHCLK = 65 kHz
40
TA = 105 °C
78
TA = -40 °C to 25 °C
TA = 55 °C
41
44
MSI clock, 131 kHz
fHCLK = 131 kHz
TA = 85 °C
58
Supply
TA = 105 °C
95
IDD (LP
current in
Low-power
run mode
Run)
TA = -40 °C to 25 °C
TA = 85 °C
40.5
60
MSI clock, 65 kHz
fHCLK = 32 kHz
µA
TA = 105 °C
100
49
All
peripherals
OFF, code
executed
from Flash,
VDD from
1.65 V to
3.6 V
TA = -40 °C to 25 °C
TA = 85 °C
MSI clock, 65 kHz
fHCLK = 65 kHz
67
TA = 105 °C
107
71
TA = -40 °C to 25 °C
TA = 55 °C
73
MSI clock, 131 kHz
f
HCLK = 131 kHz
TA = 85 °C
88
TA = 105 °C
110
Max allowed
DD max current in
(LP Run) Low-power
run mode
VDD from
1.65 V to
3.6 V
I
-
-
-
200
1. Guaranteed by characterization results, unless otherwise specified.
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Table 21. Current consumption in Low-power sleep mode
Symbol
Parameter
Conditions
Typ
Max(1)
Unit
MSI clock, 65 kHz
f
HCLK = 32 kHz
TA = -40 °C to 25 °C
4.4
-
Flash OFF
TA = -40 °C to 25 °C
TA = 85 °C
18
24
21
27
43
21
28
42
25
26
31
45
20.5
27
43
21
28
42
25
26
31
45
MSI clock, 65 kHz
fHCLK = 32 kHz
Flash ON
TA = 105 °C
35
All peripherals
OFF, VDD from
1.65 V to 3.6 V
TA = -40 °C to 25 °C
TA = 85 °C
18.6
24.5
35
MSI clock, 65 kHz
f
HCLK = 65 kHz,
Flash ON
TA = 105 °C
TA = -40 °C to 25 °C
TA = 55 °C
22
MSI clock, 131 kHz
fHCLK = 131 kHz,
Flash ON
23.5
28.5
39
Supply
TA = 85 °C
IDD
current in
(LP Sleep) Low-power
sleep mode
TA = 105 °C
TA = -40 °C to 25 °C
TA = 85 °C
18
µA
MSI clock, 65 kHz
24
f
HCLK = 32 kHz
TA = 105 °C
35
TA = -40 °C to 25 °C
TA = 85 °C
18.6
24.5
35
TIM9 and
USART1
enabled, Flash
ON, VDD from
1.65 V to 3.6 V
MSI clock, 65 kHz
fHCLK = 65 kHz
TA = 105 °C
TA = -40 °C to 25 °C
TA = 55 °C
22
23.5
28.5
39
MSI clock, 131 kHz
f
HCLK = 131 kHz
TA = 85 °C
TA = 105 °C
Max
allowed
current in
Low-power
IDD max
(LP Sleep)
VDD from 1.65 V
to 3.6 V
-
-
-
200
sleep mode
1. Guaranteed by characterization results, unless otherwise specified.
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Table 22. Typical and maximum current consumptions in Stop mode
Symbol
Parameter
Conditions
Typ
Max(1) Unit
TA = -40°C to 25°C
VDD = 1.8 V
1.1
-
TA = -40°C to 25°C
TA = 55°C
1.35
1.95
4.35
11.0
1.65
2.1
4
6
LCD
OFF
TA= 85°C
10
23
6
RTC clocked by LSI
or LSE external clock
(32.768kHz),
TA = 105°C
TA = -40°C to 25°C
TA = 55°C
LCD
ON
regulator in LP mode,
HSI and HSE OFF
(no independent
watchdog)
7
(static
TA= 85°C
4.7
12
27
10
11
16
44
-
duty)(2)
TA = 105°C
11.0
2.5
TA = -40°C to 25°C
TA = 55°C
LCD
4.65
7.25
14.0
1.7
ON (1/8
duty)(3)
TA= 85°C
TA = 105°C
TA = -40°C to 25°C
TA = 55°C
Supply current in
Stop mode with RTC
enabled
IDD (Stop
with RTC)
2.15
4.7
-
-
-
-
-
-
-
-
-
-
-
µA
LCD
OFF
TA= 85°C
TA = 105°C
11.5
1.8
TA = -40°C to 25°C
TA = 55°C
LCD
ON
2.35
4.85
11.5
2.45
4.9
(static
TA= 85°C
RTC clocked by LSE
external quartz
(32.768kHz),
regulator in LP mode,
HSI and HSE OFF
(no independent
watchdog(4)
duty)(2)
TA = 105°C
TA = -40°C to 25°C
TA = 55°C
LCD
ON (1/8
duty)(3)
TA= 85°C
7.7
TA = 105°C
14.5
TA = -40°C to 25°C
VDD = 1.8V
1.35
1.7
-
-
-
LCD
OFF
TA = -40°C to 25°C
VDD = 3.0V
TA = -40°C to 25°C
VDD = 3.6V
2.0
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Table 22. Typical and maximum current consumptions in Stop mode (continued)
Symbol
Parameter
Conditions
Typ
Max(1) Unit
Regulator in LP mode, HSI and
HSE OFF, independent
TA = -40°C to 25°C
1.6
2.2
watchdog and LSI enabled
Supply current in
IDD (Stop) Stop mode (RTC
disabled)
TA = -40°C to 25°C 0.475
1
µA
Regulator in LP mode, LSI, HSI
and HSE OFF (no independent
watchdog)
TA = 55°C
TA= 85°C
TA = 105°C
0.915
3.35
10.0
2
3
9
22(5)
MSI = 4.2 MHz
MSI = 1.05 MHz
MSI = 65 kHz(6)
-
IDD
(WU from wakeup from Stop
Stop) mode
Supply current during
TA = -40°C to 25°C
1.45
1.45
-
-
mA
1. Guaranteed by characterization results, unless otherwise specified.
2. LCD enabled with external VLCD, static duty, division ratio = 256, all pixels active, no LCD connected.
3. LCD enabled with external VLCD, 1/8 duty, 1/3 bias, division ratio = 64, all pixels active, no LCD connected.
4. Based on characterization done with a 32.768 kHz crystal (MC306-G-06Q-32.768, manufacturer JFVNY) with two 6.8 pF
loading capacitors.
5. Guaranteed by test in production.
6. When MSI = 64 kHz, the RMS current is measured over the first 15 µs following the wakeup event. For the remaining part
of the wakeup period, the current corresponds the Run mode current.
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Table 23. Typical and maximum current consumptions in Standby mode
Symbol
Parameter
Conditions
Typ
Max(1)
Unit
TA = -40 °C to 25 °C
VDD = 1.8 V
0.82
-
TA = -40 °C to 25 °C
1.15
1.15
1.65
2.75
1.9
2.2
RTC clocked by LSI (no
independent watchdog) TA = 55 °C
TA= 85 °C
4
8.3(2)
IDD
Supply current in
TA = 105 °C
(Standby Standby mode with RTC
with RTC) enabled
TA = -40 °C to 25 °C
1.05
-
VDD = 1.8 V
TA = -40 °C to 25 °C
TA = 55 °C
RTC clocked by LSE
external quartz (no
independent
1.35
1.55
2.1
-
-
-
-
µA
watchdog)(3)
TA= 85 °C
TA = 105 °C
3.3
Independent watchdog
and LSI enabled
TA = -40 °C to 25 °C
1
1.7
TA = -40 °C to 25 °C
TA = 55 °C
0.305
0.365
0.66
2
0.6
0.9
Supply current in
Standby mode (RTC
disabled)
IDD
(Standby)
Independent watchdog
and LSI OFF
TA = 85 °C
2.75
7(2)
TA = 105 °C
IDD
Supply current during
(WU from wakeup time from
Standby) Standby mode
-
TA = -40 °C to 25 °C
1
-
mA
1. Guaranteed by characterization results, unless otherwise specified.
2. Guaranteed by test in production.
3. Based on characterization done with a 32.768 kHz crystal (MC306-G-06Q-32.768, manufacturer JFVNY) with two 6.8pF
loading capacitors.
On-chip peripheral current consumption
The current consumption of the on-chip peripherals is given in the following table. The MCU
is placed under the following conditions:
•
•
•
all I/O pins are in input mode with a static value at V or V (no load)
DD SS
all peripherals are disabled unless otherwise mentioned
the given value is calculated by measuring the current consumption
–
–
with all peripherals clocked off
with only one peripheral clocked on
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(1)
Table 24. Peripheral current consumption
Typical consumption, VDD = 3.0 V, TA = 25 °C
Range 1, Range 2, Range 3,
VCORE
1.8 V
=
VCORE
1.5 V
=
VCORE
1.2 V
=
Low-power
sleep and
run
Peripheral
Unit
VOS[1:0] = VOS[1:0] = VOS[1:0] =
01
10
11
TIM2
TIM3
TIM4
TIM5
TIM6
TIM7
LCD
14.3
13.8
13.2
17.7
4.8
12.1
11.7
11.1
14.9
4.0
9.5
9.2
8.7
11.8
3.0
3.0
3.3
2.3
5.8
4.8
6.1
6.0
5.8
5.1
14.3
2.5
4.4
3.2
12.1
11.7
11.1
14.9
4.0
4.7
3.9
3.9
5.0
4.1
4.1
WWDG
SPI2
3.5
2.9
2.9
8.9
7.4
7.4
SPI3
7.3
6.0
6.0
µA/MHz
APB1
(fHCLK
)
USART2
USART3
I2C1
9.4
7.7
7.7
9.4
7.6
7.6
8.9
7.4
7.4
I2C2
7.9
6.4
6.4
USB
21.2
4.0
18.0
3.2
18.0
3.2
PWR
DAC
6.3
5.5
5.5
COMP
4.9
3.9
3.9
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(1)
Table 24. Peripheral current consumption (continued)
Typical consumption, VDD = 3.0 V, TA = 25 °C
Range 1,
Range 2,
Range 3,
VCORE
1.8 V
=
VCORE
1.5 V
=
VCORE
1.2 V
=
Low-power
sleep and
run
Peripheral
Unit
VOS[1:0] = VOS[1:0] = VOS[1:0] =
01
10
11
SYSCFG &
RI
3.5
2.9
2.4
2.9
TIM9
9.0
7.1
7.4
5.8
5.3
9.1
4.2
7.8
6.1
6.1
6.8
7.1
6.2
6.3
7.0
1.3
0.6
19.3
16.0
14.5
206
5.8
4.6
4.3
7.2
3.3
6.1
4.8
4.8
5.3
5.7
4.9
5.0
5.4
1.1
0.4
18.3
12.8
11.5
184
7.4
5.8
5.3
9.1
4.2
7.8
6.1
6.1
6.8
7.1
6.2
6.3
7.0
1.3
0.6
TIM10
TIM11
ADC(2)
SPI1
6.5
APB2
11.0
5.1
USART1
GPIOA
GPIOB
GPIOC
GPIOD
GPIOE
GPIOF
GPIOG
GPIOH
CRC
9.4
7.3
7.5
8.2
µA/MHz
8.7
(fHCLK
)
7.6
7.7
AHB
8.4
1.8
0.8
(3)
FLASH
DMA1
DMA2
26.3
19.0
17.0
261
-
16.0
14.5
All enabled
IDD (RTC)
IDD (LCD)
186.7
0.4
3.1
1450
340
0.16
2
(4)
IDD (ADC)
(5)
IDD (DAC)
IDD (COMP1)
IDD (COMP2)
µA
Slow mode
Fast mode
5
(6)
IDD (PVD / BOR)
IDD (IWDG)
2.6
0.25
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1. Data based on differential IDD measurement between all peripherals OFF an one peripheral with clock
enabled, in the following conditions: fHCLK = 32 MHz (range 1), fHCLK = 16 MHz (range 2), fHCLK = 4 MHz
(range 3), fHCLK = 64kHz (Low-power run/sleep), fAPB1 = fHCLK, fAPB2 = fHCLK, default prescaler value for
each peripheral. The CPU is in Sleep mode in both cases. No I/O pins toggling.
2. HSI oscillator is OFF for this measure.
3. In Low-power sleep and run mode, the Flash memory must always be in power-down mode.
4. Data based on a differential IDD measurement between ADC in reset configuration and continuous ADC
conversion (HSI consumption not included).
5. Data based on a differential IDD measurement between DAC in reset configuration and continuous DAC
conversion of VDD/2. DAC is in buffered mode, output is left floating.
6. Including supply current of internal reference voltage.
6.3.5
Wakeup time from low-power mode
The wakeup times given in the following table are measured with the MSI RC oscillator. The
clock source used to wake up the device depends on the current operating mode:
•
•
Sleep mode: the clock source is the clock that was set before entering Sleep mode
Stop mode: the clock source is the MSI oscillator in the range configured before
entering Stop mode
•
Standby mode: the clock source is the MSI oscillator running at 2.1 MHz
All timings are derived from tests performed under the conditions summarized in Table 13.
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Table 25. Low-power mode wakeup timings
Symbol
Parameter
Conditions
Typ Max(1) Unit
tWUSLEEP
Wakeup from Sleep mode
fHCLK = 32 MHz
0.4
46
-
-
fHCLK = 262 kHz
Flash enabled
Wakeup from Low-power sleep
mode, fHCLK = 262 kHz
tWUSLEEP_LP
fHCLK = 262 kHz
46
-
-
Flash switched OFF
Wakeup from Stop mode,
regulator in Run mode
fHCLK = fMSI = 4.2 MHz
8.2
ULP bit = 1 and FWU bit = 1
fHCLK = fMSI = 4.2 MHz
Voltage range 1 and 2
7.7
8.2
8.9
µs
fHCLK = fMSI = 4.2 MHz
Voltage range 3
13.1
tWUSTOP
fHCLK = fMSI = 2.1 MHz
10.2
16
13.4
20
Wakeup from Stop mode,
regulator in low-power mode
fHCLK = fMSI = 1.05 MHz
ULP bit = 1 and FWU bit = 1
fHCLK = fMSI = 524 kHz
fHCLK = fMSI = 262 kHz
31
37
57
66
f
HCLK = fMSI = 131 kHz
112
221
123
236
fHCLK = MSI = 65 kHz
fHCLK = MSI = 2.1 MHz
Wakeup from Standby mode
ULP bit = 1 and FWU bit = 1
58
104
tWUSTDBY
Wakeup from Standby mode
FWU bit = 0
fHCLK = MSI = 2.1 MHz
2.6
3.25
ms
1. Guaranteed by characterization, unless otherwise specified
6.3.6
External clock source characteristics
High-speed external user clock generated from an external source
In bypass mode the HSE oscillator is switched off and the input pin is a standard GPIO.The
external clock signal has to respect the I/O characteristics in Section 6.3.12. However, the
recommended clock input waveform is shown in Figure 14.
(1)
Table 26. High-speed external user clock characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
CSS is on or
PLL is used
1
8
32
MHz
User external clock source
frequency
fHSE_ext
CSS is off, PLL
not used
0
8
32
MHz
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STM32L151xC/C-A STM32L152xC/C-A
(1)
Table 26. High-speed external user clock characteristics (continued)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VHSEH
VHSEL
tw(HSEH)
OSC_IN input pin high level voltage
OSC_IN input pin low level voltage
0.7VDD
VSS
-
-
VDD
V
0.3VDD
OSC_IN high or low time
OSC_IN rise or fall time
12
-
-
tw(HSEL)
-
ns
pF
tr(HSE)
tf(HSE)
-
-
-
20
-
Cin(HSE) OSC_IN input capacitance
1. Guaranteed by design.
2.6
Figure 14. High-speed external clock source AC timing diagram
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Electrical characteristics
Low-speed external user clock generated from an external source
The characteristics given in the following table result from tests performed using a low-
speed external clock source, and under the conditions summarized in Table 13.
(1)
Table 27. Low-speed external user clock characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
User external clock source
frequency
fLSE_ext
1
32.768
1000
kHz
OSC32_IN input pin high level
voltage
VLSEH
VLSEL
0.7VDD
VSS
-
-
-
VDD
0.3VDD
-
V
OSC32_IN input pin low level
voltage
-
-
tw(LSEH)
tw(LSEL)
OSC32_IN high or low time
OSC32_IN rise or fall time
465
ns
tr(LSE)
tf(LSE)
-
-
-
10
-
CIN(LSE) OSC32_IN input capacitance
1. Guaranteed by design.
0.6
pF
Figure 15. Low-speed external clock source AC timing diagram
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High-speed external clock generated from a crystal/ceramic resonator
The high-speed external (HSE) clock can be supplied with a 1 to 24 MHz crystal/ceramic
resonator oscillator. All the information given in this paragraph are based on
characterization results obtained with typical external components specified in Table 28. In
the application, the resonator and the load capacitors have to be placed as close as
possible to the oscillator pins in order to minimize output distortion and startup stabilization
time. Refer to the crystal resonator manufacturer for more details on the resonator
characteristics (frequency, package, accuracy).
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Electrical characteristics
STM32L151xC/C-A STM32L152xC/C-A
(1)(2)
Table 28. HSE oscillator characteristics
Symbol
Parameter
Conditions
Min Typ
Max
Unit
fOSC_IN
RF
Oscillator frequency
Feedback resistor
-
-
1
24
-
MHz
-
-
200
20
kΩ
Recommended load
capacitance versus
equivalent serial
resistance of the crystal
(RS)(3)
C
RS = 30 Ω
-
pF
mA
mA
VDD= 3.3 V,
VIN = VSS with 30 pF
load
IHSE
HSE driving current
-
-
3
2.5 (startup)
C = 20 pF
OSC = 16 MHz
-
-
-
-
f
0.7 (stabilized)
HSE oscillator power
consumption
IDD(HSE)
2.5 (startup)
C = 10 pF
fOSC = 16 MHz
Startup
0.46 (stabilized)
Oscillator
transconductance
gm
3.5
-
-
-
-
mA /V
ms
(4)
tSU(HSE)
Startup time
VDD is stabilized
1
1. Resonator characteristics given by the crystal/ceramic resonator manufacturer.
2. Guaranteed by characterization results.
3. The relatively low value of the RF resistor offers a good protection against issues resulting from use in a humid
environment, due to the induced leakage and the bias condition change. However, it is recommended to take this point into
account if the MCU is used in tough humidity conditions.
4. tSU(HSE) is the startup time measured from the moment it is enabled (by software) to a stabilized 8 MHz oscillation is
reached. This value is measured for a standard crystal resonator and it can vary significantly with the crystal manufacturer.
For C and C , it is recommended to use high-quality external ceramic capacitors in the
L1
L2
5 pF to 25 pF range (typ.), designed for high-frequency applications, and selected to match
the requirements of the crystal or resonator (see Figure 16). C and C are usually the
L1
L2
same size. The crystal manufacturer typically specifies a load capacitance which is the
series combination of C and C . PCB and MCU pin capacitance must be included (10 pF
L1
L2
can be used as a rough estimate of the combined pin and board capacitance) when sizing
and C . Refer to the application note AN2867 “Oscillator design guide for ST
C
L1
L2
microcontrollers” available from the ST website www.st.com.
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Electrical characteristics
Figure 16. HSE oscillator circuit diagram
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Low-speed external clock generated from a crystal/ceramic resonator
The low-speed external (LSE) clock can be supplied with a 32.768 kHz crystal/ceramic
resonator oscillator. All the information given in this paragraph are based on
characterization results obtained with typical external components specified in Table 29. In
the application, the resonator and the load capacitors have to be placed as close as
possible to the oscillator pins in order to minimize output distortion and startup stabilization
time. Refer to the crystal resonator manufacturer for more details on the resonator
characteristics (frequency, package, accuracy).
(1)
Table 29. LSE oscillator characteristics (fLSE = 32.768 kHz)
Symbol
Parameter
Conditions
Min
Typ
Max Unit
Low speed external oscillator
frequency
fLSE
RF
C(2)
ILSE
-
-
-
-
32.768
1.2
-
-
kHz
Feedback resistor
MΩ
Recommended load capacitance
versus equivalent serial
RS = 30 kΩ
-
8
-
pF
µA
resistance of the crystal (RS)(3)
LSE driving current
VDD = 3.3 V, VIN = VSS
-
-
-
1.1
V
DD = 1.8 V
450
600
750
-
-
-
-
-
-
LSE oscillator current
consumption
IDD (LSE)
VDD = 3.0 V
-
nA
V
DD = 3.6V
-
gm
Oscillator transconductance
Startup time
-
3
-
µA/V
s
(4)
tSU(LSE)
VDD is stabilized
1
1. Guaranteed by characterization results.
2. Refer to the note and caution paragraphs below the table, and to the application note AN2867 “Oscillator
design guide for ST microcontrollers”.
3. The oscillator selection can be optimized in terms of supply current using an high quality resonator with
small RS value for example MSIV-TIN32.768kHz. Refer to crystal manufacturer for more details.
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STM32L151xC/C-A STM32L152xC/C-A
4. tSU(LSE) is the startup time measured from the moment it is enabled (by software) to a stabilized
32.768 kHz oscillation is reached. This value is measured for a standard crystal resonator and it can vary
significantly with the crystal manufacturer.
Note:
For C and C , it is recommended to use high-quality ceramic capacitors in the 5 pF to
L1 L2
15 pF range selected to match the requirements of the crystal or resonator (see Figure 17).
and C are usually the same size. The crystal manufacturer typically specifies a load
C
L1
L2,
capacitance which is the series combination of C and C .
L1
L2
Load capacitance C has the following formula: C = C x C / (C + C ) + C where
L
L
L1
L2
L1
L2
stray
C
is the pin capacitance and board or trace PCB-related capacitance. Typically, it is
stray
between 2 pF and 7 pF.
Caution:
To avoid exceeding the maximum value of C and C (15 pF) it is strongly recommended
L1
L2
to use a resonator with a load capacitance C ≤7 pF. Never use a resonator with a load
L
capacitance of 12.5 pF.
Example: if the user chooses a resonator with a load capacitance of C = 6 pF and C
=
stray
L
2 pF, then C = C = 8 pF.
L1
L2
Figure 17. Typical application with a 32.768 kHz crystal
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Electrical characteristics
6.3.7
Internal clock source characteristics
The parameters given in Table 30 are derived from tests performed under the conditions
summarized in Table 13.
High-speed internal (HSI) RC oscillator
Table 30. HSI oscillator characteristics
Symbol
Parameter
Frequency
Conditions
Min
Typ Max Unit
fHSI
VDD = 3.0 V
-
-
16
-
MHz
%
Trimming code is not a multiple of 16
Trimming code is a multiple of 16
VDDA = 3.0 V, TA = 25 °C
0.4 0.7
HSI user-trimmed
resolution
(1)(2)
TRIM
-
-
-
-
-
-
-
1.5
%
-1(3)
-1.5
-2
1(3)
1.5
2
%
VDDA = 3.0 V, TA = 0 to 55 °C
VDDA = 3.0 V, TA = -10 to 70 °C
%
%
Accuracy of the
factory-calibrated
HSI oscillator
(2)
ACCHSI
V
DDA = 3.0 V, TA = -10 to 85 °C
VDDA = 3.0 V, TA = -10 to 105 °C
DDA = 1.65 V to 3.6 V
-2.5
-4
2
%
2
%
V
-4
-
-
3
6
%
µs
µA
TA = -40 to 105 °C
HSI oscillator
startup time
(2)
tSU(HSI)
-
3.7
100
HSI oscillator
power consumption
(2)
IDD(HSI)
-
-
140
1. The trimming step differs depending on the trimming code. It is usually negative on the codes which are
multiples of 16 (0x00, 0x10, 0x20, 0x30...0xE0).
2. Guaranteed by characterization results.
3. Guaranteed by test in production.
Low-speed internal (LSI) RC oscillator
Table 31. LSI oscillator characteristics
Symbol
Parameter
LSI frequency
Min
Typ
Max
Unit
(1)
fLSI
26
38
56
kHz
%
LSI oscillator frequency drift
0°C ≤TA ≤ 105°C
(2)
DLSI
-10
-
4
(3)
tsu(LSI)
LSI oscillator startup time
-
-
-
200
510
µs
(3)
IDD(LSI)
LSI oscillator power consumption
400
nA
1. Guaranteed by test in production.
2. This is a deviation for an individual part, once the initial frequency has been measured.
3. Guaranteed by design.
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Multi-speed internal (MSI) RC oscillator
Table 32. MSI oscillator characteristics
Parameter Condition
Symbol
Typ
Max Unit
MSI range 0
MSI range 1
MSI range 2
MSI range 3
MSI range 4
MSI range 5
MSI range 6
-
65.5
131
262
524
1.05
2.1
-
-
kHz
-
Frequency after factory calibration, done at
VDD= 3.3 V and TA = 25 °C
fMSI
-
-
-
-
-
MHz
4.2
ACCMSI
Frequency error after factory calibration
0.5
%
%
MSI oscillator frequency drift
0 °C ≤TA ≤105 °C
(1)
DTEMP(MSI)
-
-
3
-
-
MSI oscillator frequency drift
1.65 V ≤VDD ≤3.6 V, TA = 25 °C
(1)
DVOLT(MSI)
2.5 %/V
MSI range 0
MSI range 1
MSI range 2
MSI range 3
MSI range 4
MSI range 5
MSI range 6
MSI range 0
MSI range 1
MSI range 2
MSI range 3
MSI range 4
MSI range 5
0.75
1
-
-
-
1.5
2.5
4.5
8
(2)
IDD(MSI)
MSI oscillator power consumption
-
-
-
-
-
-
-
-
-
-
µA
15
30
20
15
10
6
tSU(MSI)
MSI oscillator startup time
µs
5
MSI range 6,
Voltage range 1
and 2
3.5
5
-
-
MSI range 6,
Voltage range 3
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Table 32. MSI oscillator characteristics (continued)
Symbol
Parameter
Condition
Typ
Max Unit
MSI range 0
MSI range 1
MSI range 2
MSI range 3
MSI range 4
MSI range 5
-
-
-
-
-
-
40
20
10
4
2.5
µs
2
(2)
tSTAB(MSI)
MSI oscillator stabilization time
MSI range 6,
Voltage range 1
and 2
-
2
3
MSI range 3,
Voltage range 3
-
-
-
Any range to
range 5
4
fOVER(MSI) MSI oscillator frequency overshoot
MHz
6
Any range to
range 6
1. This is a deviation for an individual part, once the initial frequency has been measured.
2. Guaranteed by characterization results.
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STM32L151xC/C-A STM32L152xC/C-A
6.3.8
PLL characteristics
The parameters given in Table 33 are derived from tests performed under the conditions
summarized in Table 13.
Table 33. PLL characteristics
Value
Symbol
Parameter
Unit
Min
Typ
Max(1)
PLL input clock(2)
2
45
2
-
-
-
24
55
32
MHz
%
fPLL_IN
fPLL_OUT
tLOCK
PLL input clock duty cycle
PLL output clock
MHz
PLL lock time
PLL input = 16 MHz
PLL VCO = 96 MHz
-
115
160
µs
Jitter
Cycle-to-cycle jitter
-
-
-
-
600
450
150
ps
I
DDA(PLL)
Current consumption on VDDA
Current consumption on VDD
220
120
µA
IDD(PLL)
1. Guaranteed by characterization results.
2. Take care of using the appropriate multiplier factors so as to have PLL input clock values compatible with
the range defined by fPLL_OUT
.
6.3.9
Memory characteristics
The characteristics are given at TA = -40 to 105 °C unless otherwise specified.
RAM memory
Table 34. RAM and hardware registers
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VRM Data retention mode(1)
STOP mode (or RESET)
1.65
-
-
V
1. Minimum supply voltage without losing data stored in RAM (in Stop mode or under Reset) or in hardware
registers (only in Stop mode).
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Flash memory and data EEPROM
Table 35. Flash memory and data EEPROM characteristics
Symbol
Parameter
Conditions
Min
Typ
Max(1) Unit
Operating voltage
VDD
-
1.65
-
3.6
V
Read / Write / Erase
Programming/ erasing
time for byte / word /
double word / half-page
Erasing
-
-
3.28
3.28
3.94
3.94
tprog
ms
Programming
Average current during
the whole programming /
erase operation
-
-
600
1.5
900
2.5
µA
IDD
TA = 25 °C, VDD = 3.6 V
Maximum current (peak)
during the whole
programming / erase
operation
mA
1. Guaranteed by design.
Table 36. Flash memory and data EEPROM endurance and retention
Value
Symbol
Parameter
Conditions
Unit
Min(1) Typ Max
Cycling (erase / write)
Program memory
-
-
-
-
-
-
-
-
-
-
-
-
10
300
30
TA = -40°C to
(2)
NCYC
kcycles
105 °C
Cycling (erase / write)
EEPROM data memory
Data retention (program memory) after
10 kcycles at TA = 85 °C
TRET = +85 °C
Data retention (EEPROM data memory)
after 300 kcycles at TA = 85 °C
30
(2)
tRET
years
Data retention (program memory) after
10 kcycles at TA = 105 °C
10
TRET = +105 °C
Data retention (EEPROM data memory)
after 300 kcycles at TA = 105 °C
10
1. Guaranteed by characterization results.
2. Characterization is done according to JEDEC JESD22-A117.
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Electrical characteristics
STM32L151xC/C-A STM32L152xC/C-A
6.3.10
EMC characteristics
Susceptibility tests are performed on a sample basis during device characterization.
Functional EMS (electromagnetic susceptibility)
While a simple application is executed on the device (toggling 2 LEDs through I/O ports).
the device is stressed by two electromagnetic events until a failure occurs. The failure is
indicated by the LEDs:
•
Electrostatic discharge (ESD) (positive and negative) is applied to all device pins until
a functional disturbance occurs. This test is compliant with the IEC 61000-4-2 standard.
•
FTB: A Burst of Fast Transient voltage (positive and negative) is applied to V and
DD
V
through a 100 pF capacitor, until a functional disturbance occurs. This test is
SS
compliant with the IEC 61000-4-4 standard.
A device reset allows normal operations to be resumed.
The test results are given in Table 37. They are based on the EMS levels and classes
defined in application note AN1709.
Table 37. EMS characteristics
Level/
Class
Symbol
Parameter
Conditions
VDD = 3.3 V, LQFP100, TA = +25 °C,
fHCLK = 32 MHz
Voltage limits to be applied on any I/O pin to
induce a functional disturbance
VFESD
2B
4A
conforms to IEC 61000-4-2
VDD = 3.3 V, LQFP100, TA = +25
°C,
fHCLK = 32 MHz
conforms to IEC 61000-4-4
Fast transient voltage burst limits to be
applied through 100 pF on VDD and VSS
pins to induce a functional disturbance
VEFTB
Designing hardened software to avoid noise problems
EMC characterization and optimization are performed at component level with a typical
application environment and simplified MCU software. It should be noted that good EMC
performance is highly dependent on the user application and the software in particular.
Therefore it is recommended that the user applies EMC software optimization and
prequalification tests in relation with the EMC level requested for his application.
Software recommendations
The software flowchart must include the management of runaway conditions such as:
•
•
•
Corrupted program counter
Unexpected reset
Critical data corruption (control registers...)
Prequalification trials
Most of the common failures (unexpected reset and program counter corruption) can be
reproduced by manually forcing a low state on the NRST pin or the oscillator pins for 1
second.
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To complete these trials, ESD stress can be applied directly on the device, over the range of
specification values. When unexpected behavior is detected, the software can be hardened
to prevent unrecoverable errors occurring (see application note AN1015).
Electromagnetic Interference (EMI)
The electromagnetic field emitted by the device are monitored while a simple application is
executed (toggling 2 LEDs through the I/O ports). This emission test is compliant with
IEC 61967-2 standard which specifies the test board and the pin loading.
Table 38. EMI characteristics
Max vs. frequency range
Monitored
4 MHz 16 MHz
32MHz
voltage
range 1
Symbol Parameter
Conditions
Unit
frequency band
voltage voltage
range 3 range 2
0.1 to 30 MHz
30 to 130 MHz
130 MHz to 1GHz
SAE EMI Level
3
-6
4
-5
-7
-7
1
VDD = 3.3 V,
TA = 25 °C,
LQFP100 package
compliant with IEC
61967-2
18
15
2.5
dBµV
-
SEMI
Peak level
5
2
6.3.11
Electrical sensitivity characteristics
Based on three different tests (ESD, LU) using specific measurement methods, the device is
stressed in order to determine its performance in terms of electrical sensitivity.
Electrostatic discharge (ESD)
Electrostatic discharges (a positive then a negative pulse separated by 1 second) are
applied to the pins of each sample according to each pin combination. The sample size
depends on the number of supply pins in the device (3 parts × (n+1) supply pins). This test
conforms to the JESD22-A114/C101 standard.
Table 39. ESD absolute maximum ratings
Maximum
Symbol
Ratings
Conditions
Class
Unit
value(1)
Electrostatic
VESD(HBM) discharge voltage
(human body model)
TA = +25 °C, conforming
to JESD22-A114
2
2000
V
Electrostatic
VESD(CDM) discharge voltage
(charge device model)
TA = +25 °C, conforming
to JESD22-C101
III
500
V
1. Guaranteed by characterization results.
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Electrical characteristics
Static latch-up
STM32L151xC/C-A STM32L152xC/C-A
Two complementary static tests are required on six parts to assess the latch-up
performance:
•
•
A supply overvoltage is applied to each power supply pin
A current injection is applied to each input, output and configurable I/O pin
These tests are compliant with EIA/JESD 78A IC latch-up standard.
Table 40. Electrical sensitivities
Symbol
Parameter
Conditions
Class
LU
Static latch-up class
TA = +105 °C conforming to JESD78A
II level A
6.3.12
I/O current injection characteristics
As a general rule, current injection to the I/O pins, due to external voltage below V or
SS
above V (for standard pins) should be avoided during normal product operation.
DD
However, in order to give an indication of the robustness of the microcontroller in cases
when abnormal injection accidentally happens, susceptibility tests are performed on a
sample basis during device characterization.
Functional susceptibility to I/O current injection
While a simple application is executed on the device, the device is stressed by injecting
current into the I/O pins programmed in floating input mode. While current is injected into
the I/O pin, one at a time, the device is checked for functional failures.
The failure is indicated by an out of range parameter: ADC error above a certain limit (higher
than 5 LSB TUE), out of conventional limits of induced leakage current on adjacent pins (out
of –5 µA/+0 µA range), or other functional failure (for example reset occurrence oscillator
frequency deviation, LCD levels).
The test results are given in the Table 41.
Table 41. I/O current injection susceptibility
Functional susceptibility
Symbol
Description
Unit
Negative
injection
Positive
injection
Injected current on all 5 V tolerant (FT) pins
Injected current on BOOT0
-5 (1)
NA
NA
+5
IINJ
-0
mA
Injected current on any other pin
-5 (1)
1. It is recommended to add a Schottky diode (pin to ground) to analog pins which may potentially inject
negative currents.
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6.3.13
I/O port characteristics
General input/output characteristics
Unless otherwise specified, the parameters given in Table 48 are derived from tests
performed under the conditions summarized in Table 13. All I/Os are CMOS and TTL
compliant.
Table 42. I/O static characteristics
Min
Symbol
Parameter
Conditions
Typ
Max Unit
0.3VDD
(1)
VIL
Input low level voltage
-
-
-
Standard I/O
FT I/O
-
-
0.7 VDD
V
VIH
Input high level voltage
-
-
-
BOOT0 I/O
-
-
I/O Schmitt trigger voltage
hysteresis(2)
10%
VDD
Vhys
Standard I/O
-
-
(3)
VSS ≤VIN ≤VDD
I/Os with LCD
-
±50
±50
VSS ≤VIN ≤VDD
I/Os with analog
switches
-
-
-
-
VSS ≤VIN ≤VDD
I/Os with analog
switches and LCD
nA
±50
Ilkg
Input leakage current(4)
VSS ≤VIN ≤VDD
I/Os with USB
-
-
-
-
±250
±50
VSS ≤VIN ≤VDD
Standard I/Os
FT I/O
-
-
±10
60
uA
VDD ≤ VIN ≤ 5V
Weak pull-up equivalent
resistor(1)(5)
RPU
VIN = VSS
30
45
kΩ
Weak pull-down equivalent
resistor(5)
RPD
CIO
VIN = VDD
30
-
45
5
60
-
kΩ
I/O pin capacitance
-
pF
1. Guaranteed by test in production
2. Hysteresis voltage between Schmitt trigger switching levels. Guaranteed by characterization results.
3. With a minimum of 200 mV. Guaranteed by characterization results.
4. The max. value may be exceeded if negative current is injected on adjacent pins.
5. Pull-up and pull-down resistors are designed with a true resistance in series with a switchable PMOS/NMOS.
.
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Electrical characteristics
STM32L151xC/C-A STM32L152xC/C-A
Output driving current
The GPIOs (general purpose input/outputs) can sink or source up to ±8 mA, and sink or
source up to ±20 mA with the non-standard V /V specifications given in Table 43.
OL OH
In the user application, the number of I/O pins which can drive current must be limited to
respect the absolute maximum rating specified in Section 6.2:
•
The sum of the currents sourced by all the I/Os on V
plus the maximum Run
DD,
consumption of the MCU sourced on V
cannot exceed the absolute maximum rating
DD,
I
(see Table 11).
Σ
VDD( )
•
The sum of the currents sunk by all the I/Os on V plus the maximum Run
SS
consumption of the MCU sunk on V cannot exceed the absolute maximum rating
SS
I
(see Table 11).
Σ
VSS( )
Output voltage levels
Unless otherwise specified, the parameters given in Table 43 are derived from tests
performed under the conditions summarized in Table 13. All I/Os are CMOS and TTL
compliant.
Table 43. Output voltage characteristics
Symbol
Parameter
Conditions
Min
Max Unit
(1)(2)
VOL
Output low level voltage for an I/O pin
Output high level voltage for an I/O pin
Output low level voltage for an I/O pin
Output high level voltage for an I/O pin
Output low level voltage for an I/O pin
Output high level voltage for an I/O pin
-
0.4
-
I
IO = 8 mA
(2)(3)
2.7 V < VDD < 3.6 V
VOH
VDD-0.4
(3)(4)
VOL
-
0.45
IIO = 4 mA
V
(3)(4)
1.65 V < VDD < 3.6 V
VOH
VDD-0.45
-
-
(1)(4)
VOL
1.3
-
I
IO = 20 mA
2.7 V < VDD < 3.6 V
(3)(4)
VOH
VDD-1.3
1. The IIO current sunk by the device must always respect the absolute maximum rating specified in Table 11
and the sum of IIO (I/O ports and control pins) must not exceed IVSS
.
2. Guaranteed by test in production.
3. The IIO current sourced by the device must always respect the absolute maximum rating specified in
Table 11 and the sum of IIO (I/O ports and control pins) must not exceed IVDD
.
4. Guaranteed by characterization results.
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Input/output AC characteristics
The definition and values of input/output AC characteristics are given in Figure 18 and
Table 44, respectively.
Unless otherwise specified, the parameters given in Table 44 are derived from tests
performed under the conditions summarized in Table 13.
(1)
Table 44. I/O AC characteristics
OSPEEDRx
[1:0] bit
Symbol
Parameter
Conditions
Min Max(2) Unit
value(1)
CL = 50 pF, VDD = 2.7 V to 3.6 V
CL = 50 pF, VDD = 1.65 V to 2.7 V
CL = 50 pF, VDD = 2.7 V to 3.6 V
CL = 50 pF, VDD = 1.65 V to 2.7 V
CL = 50 pF, VDD = 2.7 V to 3.6 V
CL = 50 pF, VDD = 1.65 V to 2.7 V
CL = 50 pF, VDD = 2.7 V to 3.6 V
CL = 50 pF, VDD = 1.65 V to 2.7 V
CL = 50 pF, VDD = 2.7 V to 3.6 V
CL = 50 pF, VDD = 1.65 V to 2.7 V
CL = 50 pF, VDD = 2.7 V to 3.6 V
CL = 50 pF, VDD = 1.65 V to 2.7 V
CL = 30 pF, VDD = 2.7 V to 3.6 V
CL = 50 pF, VDD = 1.65 V to 2.7 V
CL = 30 pF, VDD = 2.7 V to 3.6 V
CL = 50 pF, VDD = 1.65 V to 2.7 V
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
400
400
625
625
2
fmax(IO)out Maximum frequency(3)
kHz
ns
00
01
10
tf(IO)out
Output rise and fall time
tr(IO)out
fmax(IO)out Maximum frequency(3)
MHz
ns
1
125
250
10
2
tf(IO)out
Output rise and fall time
tr(IO)out
Fmax(IO)out Maximum frequency(3)
MHz
ns
25
125
50
8
tf(IO)out
Output rise and fall time
tr(IO)out
Fmax(IO)out Maximum frequency(3)
MHz
11
-
5
tf(IO)out
Output rise and fall time
tr(IO)out
30
ns
Pulse width of external
tEXTIpw
signals detected by the
EXTI controller
-
8
-
1. The I/O speed is configured using the OSPEEDRx[1:0] bits. Refer to the STM32L151xx, STM32L152xx and STM32L162xx
reference manual for a description of GPIO Port configuration register.
2. Guaranteed by design.
3. The maximum frequency is defined in Figure 18.
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STM32L151xC/C-A STM32L152xC/C-A
Figure 18. I/O AC characteristics definition
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6.3.14
NRST pin characteristics
The NRST pin input driver uses CMOS technology. It is connected to a permanent pull-up
resistor, R (see Table 45)
PU
Unless otherwise specified, the parameters given in Table 45 are derived from tests
performed under the conditions summarized in Table 13.
Table 45. NRST pin characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
NRST input low level
voltage
(1)
VIL(NRST)
-
-
-
0.3 VDD
NRST input high
level voltage
(1)
(1)
VIH(NRST)
-
0.7 VDD
-
-
V
IOL = 2 mA
2.7 V < VDD < 3.6 V
-
-
-
NRST output low
level voltage
VOL(NRST)
0.4
IOL = 1.5 mA
1.65 V < VDD < 2.7 V
-
NRST Schmitt trigger
voltage hysteresis
(1)
(2)
Vhys(NRST)
RPU
-
-
10%VDD
-
mV
kΩ
ns
Weak pull-up
VIN = VSS
30
-
45
-
60
50
-
equivalent resistor(3)
NRST input filtered
pulse
(1)
VF(NRST)
-
-
NRST input not
filtered pulse
(3)
VNF(NRST)
350
-
ns
1. Guaranteed by design.
2. With a minimum of 200 mV.
3. The pull-up is designed with a true resistance in series with a switchable PMOS. This PMOS contribution to the series
resistance is around 10%.
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Figure 19. Recommended NRST pin protection
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1. The reset network protects the device against parasitic resets.
2. The user must ensure that the level on the NRST pin can go below the VIL(NRST) max level specified in
Table 45. Otherwise the reset will not be taken into account by the device.
6.3.15
TIM timer characteristics
The parameters given in the Table 46 are guaranteed by design.
Refer to Section 6.3.13: I/O port characteristics for details on the input/output ction
characteristics (output compare, input capture, external clock, PWM output).
(1)
Table 46. TIMx characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
-
1
-
tTIMxCLK
ns
tres(TIM)
Timer resolution time
fTIMxCLK = 32 MHz 31.25
-
fTIMxCLK/2
16
-
0
0
MHz
MHz
bit
Timer external clock
frequency on CH1 to CH4
fEXT
fTIMxCLK = 32 MHz
ResTIM
Timer resolution
-
-
16
16-bit counter clock
period when internal clock
is selected (timer’s
1
65536
tTIMxCLK
tCOUNTER
fTIMxCLK = 32 MHz 0.0312
2048
µs
prescaler disabled)
-
-
-
65536 × 65536 tTIMxCLK
tMAX_COUNT Maximum possible count
fTIMxCLK = 32 MHz
134.2
s
1. TIMx is used as a general term to refer to the TIM2, TIM3 and TIM4 timers.
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Electrical characteristics
STM32L151xC/C-A STM32L152xC/C-A
6.3.16
Communications interfaces
I2C interface characteristics
2
2
I
The device C interface meets the requirements of the standard I C communication
protocol with the following restrictions: SDA and SCL are not “true” open-drain I/O pins.
When configured as open-drain, the PMOS connected between the I/O pin and V is
DD
disabled, but is still present.
2
The I C characteristics are described in Table 47. Refer also to Section 6.3.13: I/O port
for more details on the input/output ction characteristics (SDA and SCL)
characteristics
.
2
Table 47. I C characteristics
Standard mode
Fast mode I2C(1)(2)
I2C(1)(2)
Symbol
Parameter
Unit
Min
Max
Min
Max
tw(SCLL)
tw(SCLH)
tsu(SDA)
th(SDA)
SCL clock low time
SCL clock high time
SDA setup time
4.7
4.0
250
-
-
1.3
0.6
100
-
-
µs
-
-
-
-
SDA data hold time
3450(3)
900(3)
tr(SDA)
tr(SCL)
ns
SDA and SCL rise time
-
1000
-
300
tf(SDA)
tf(SCL)
SDA and SCL fall time
Start condition hold time
-
300
-
300
th(STA)
tsu(STA)
4.0
4.7
4.0
4.7
-
-
-
-
0.6
0.6
0.6
1.3
-
-
-
-
µs
Repeated Start condition
setup time
tsu(STO)
Stop condition setup time
μs
μs
Stop to Start condition time
(bus free)
tw(STO:STA)
Capacitive load for each bus
line
Cb
-
400
-
400
pF
ns
Pulse width of spikes that
are suppressed by the
analog filter
tSP
0
50(4)
0
50(4)
Guaranteed by design.
1.
2. fPCLK1 must be at least 2 MHz to achieve standard mode I²C frequencies. It must be at least 4 MHz to
achieve fast mode I²C frequencies. It must be a multiple of 10 MHz to reach the 400 kHz maximum I²C fast
mode clock.
The maximum Data hold time has only to be met if the interface does not stretch the low period of SCL
signal.
3.
4. The minimum width of the spikes filtered by the analog filter is above tSP(max)
.
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2
Figure 20. I C bus AC waveforms and measurement circuit
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1. RS = series protection resistor.
2. RP = external pull-up resistor.
3. VDD_I2C is the I2C bus power supply.
Measurement points are done at CMOS levels: 0.3VDD and 0.7VDD.
4.
(1)(2)
Table 48. SCL frequency (f
fSCL (kHz)
= 32 MHz, VDD = VDD_I2C = 3.3 V)
PCLK1
I2C_CCR value
RP = 4.7 kΩ
400
300
200
100
50
0x801B
0x8024
0x8035
0x00A0
0x0140
0x0320
20
1. RP = External pull-up resistance, fSCL = I2C speed.
2. For speeds around 200 kHz, the tolerance on the achieved speed is of 5%. For other speed ranges, the
tolerance on the achieved speed is 2%. These variations depend on the accuracy of the external
components used to design the application.
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STM32L151xC/C-A STM32L152xC/C-A
SPI characteristics
Unless otherwise specified, the parameters given in the following table are derived from
tests performed under the conditions summarized in Table 13.
Refer to Section 6.3.12: I/O current injection characteristics for more details on the
input/output alternate function characteristics (NSS, SCK, MOSI, MISO).
(1)
Table 49. SPI characteristics
Symbol
Parameter
Conditions
Master mode
Min
Max(2)
Unit
-
-
-
16
16
fSCK
1/tc(SCK)
SPI clock frequency
Slave mode
MHz
Slave transmitter
12(3)
(2)
tr(SCK)
tf(SCK)
SPI clock rise and fall time
Capacitive load: C = 30 pF
-
6
ns
%
(2)
DuCy(SCK)
tsu(NSS)
SPI slave input clock duty cycle Slave mode
30
70
-
NSS setup time
NSS hold time
Slave mode
Slave mode
4tHCLK
2tHCLK
th(NSS)
-
(2)
tw(SCKH)
tw(SCKL)
SCK high and low time
Data input setup time
Master mode
tSCK/2−5 tSCK/2+3
(2)
(2)
tsu(MI)
Master mode
Slave mode
Master mode
Slave mode
Slave mode
Slave mode
Master mode
Slave mode
Master mode
5
6
5
5
-
(2)
tsu(SI)
-
(2)
th(MI)
-
ns
Data input hold time
(2)
th(SI)
-
(4)
ta(SO)
Data output access time
Data output valid time
Data output valid time
0
3tHCLK
(2)
tv(SO)
-
33
6.5
-
(2)
tv(MO)
-
(2)
th(SO)
17
0.5
Data output hold time
(2)
th(MO)
-
1. The characteristics above are given for voltage range 1.
2. Guaranteed by characterization results.
3. The maximum SPI clock frequency in slave transmitter mode is given for an SPI slave input clock duty cycle (DuCy(SCK))
ranging between 40 to 60%.
4. Min time is for the minimum time to drive the output and max time is for the maximum time to validate the data.
96/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Electrical characteristics
Figure 21. SPI timing diagram - slave mode and CPHA = 0
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Figure 22. SPI timing diagram - slave mode and CPHA = 1
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1. Measurement points are done at CMOS levels: 0.3VDD and 0.7VDD.
DocID026119 Rev 6
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113
Electrical characteristics
STM32L151xC/C-A STM32L152xC/C-A
(1)
Figure 23. SPI timing diagram - master mode
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1. Measurement points are done at CMOS levels: 0.3VDD and 0.7VDD.
98/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
USB characteristics
Electrical characteristics
The USB interface is USB-IF certified (full speed).
Table 50. USB startup time
Parameter
USB transceiver startup time
Symbol
Max
Unit
(1)
tSTARTUP
1
µs
1. Guaranteed by design.
Table 51. USB DC electrical characteristics
Symbol
Parameter
Conditions
Min.(1)
Max.(1) Unit
Input levels
VDD
USB operating voltage
Differential input sensitivity
-
3.0
0.2
0.8
1.3
3.6
-
V
V
(2)
VDI
I(USB_DP, USB_DM)
(2)
VCM
Differential common mode range Includes VDI range
2.5
2.0
(2)
VSE
Single ended receiver threshold
-
Output levels
(3)
VOL
VOH
Static output level low
Static output level high
RL of 1.5 kΩ to 3.6 V(4)
-
0.3
3.6
V
(3)
(4)
RL of 15 kΩ to VSS
2.8
1. All the voltages are measured from the local ground potential.
2. Guaranteed by characterization results.
3. Guaranteed by test in production.
RL is the load connected on the USB drivers.
4.
Figure 24. USB timings: definition of data signal rise and fall time
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Table 52. USB: full speed electrical characteristics
Driver characteristics(1)
Symbol
Parameter
Conditions
Min
Max
Unit
tr
tf
Rise time(2)
Fall Time(2)
CL = 50 pF
CL = 50 pF
4
4
20
20
ns
ns
DocID026119 Rev 6
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113
Electrical characteristics
STM32L151xC/C-A STM32L152xC/C-A
Table 52. USB: full speed electrical characteristics (continued)
Driver characteristics(1)
Symbol
Parameter
Conditions
Min
Max
Unit
trfm
Rise/ fall time matching
tr/tf
90
110
2.0
%
V
VCRS
Output signal crossover voltage
1.3
1. Guaranteed by design.
Measured from 10% to 90% of the data signal. For more detailed informations, please refer to USB
Specification - Chapter 7 (version 2.0).
2.
I2S characteristics
Table 53. I2S characteristics
Conditions
Symbol
Parameter
I2S Main Clock Output
Min
Max
Unit
fMCK
256 x 8K 256xFs (1) MHz
Master data: 32 bits
Slave data: 32 bits
-
-
64xFs
fCK
I2S clock frequency
MHz
%
64xFs
DCK
tr(CK)
tf(CK)
tv(WS)
th(WS)
I2S clock frequency duty cycle Slave receiver, 48KHz
30
70
8
8
24
-
I2S clock rise time
Capacitive load CL=30pF
I2S clock fall time
-
WS valid time
WS hold time
Master mode
Master mode
Slave mode
4
0
tsu(WS) WS setup time
th(WS) WS hold time
15
0
-
Slave mode
-
tsu(SD_MR) Data input setup time
tsu(SD_SR) Data input setup time
Master receiver
Slave receiver
Master receiver
Slave receiver
8
-
9
-
ns
th(SD_MR)
Data input hold time
th(SD_SR)
5
-
4
-
Slave transmitter
(after enable edge)
tv(SD_ST) Data output valid time
th(SD_ST) Data output hold time
tv(SD_MT) Data output valid time
-
22
-
64
-
Slave transmitter
(after enable edge)
Master transmitter
(after enable edge)
12
-
Master transmitter
(after enable edge)
th(SD_MT) Data output hold time
1. The maximum for 256xFs is 8 MHz
8
Note:
Refer to the I2S section of the product reference manual for more details about the sampling
frequency (Fs), f , f and D values. These values reflect only the digital peripheral
MCK CK
CK
behavior, source clock precision might slightly change them. DCK depends mainly on the
100/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Electrical characteristics
ODD bit value, digital contribution leads to a min of (I2SDIV/(2*I2SDIV+ODD) and a max of
(I2SDIV+ODD)/(2*I2SDIV+ODD). Fs max is supported for each mode/condition.
2
(1)
Figure 25. I S slave timing diagram (Philips protocol)
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1. Measurement points are done at CMOS levels: 0.3 × VDD and 0.7 × VDD
.
2. LSB transmit/receive of the previously transmitted byte. No LSB transmit/receive is sent before the first
byte.
2
(1)
Figure 26. I S master timing diagram (Philips protocol)
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1. Guaranteed by characterization results.
2. LSB transmit/receive of the previously transmitted byte. No LSB transmit/receive is sent before the first
byte.
DocID026119 Rev 6
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113
Electrical characteristics
STM32L151xC/C-A STM32L152xC/C-A
6.3.17
12-bit ADC characteristics
Unless otherwise specified, the parameters given in Table 55 are guaranteed by design.
Table 54. ADC clock frequency
Symbol Parameter
Conditions
Min
Max
Unit
VREF+ = VDDA
16
VREF+ < VDDA
8
4
2.4 V ≤VDDA ≤3.6 V
VREF+ > 2.4 V
Voltage
range 1 & 2
VREF+ < VDDA
VREF+ ≤2.4 V
ADC clock
fADC
0.480
MHz
frequency
V
REF+ = VDDA
8
4
4
1.8 V ≤VDDA ≤2.4 V
VREF+ < VDDA
Voltage range 3
Table 55. ADC characteristics
Conditions
Symbol
Parameter
Power supply
Min
Typ
Max
Unit
VDDA
-
1.8
-
3.6
VDDA
-
VREF+ Positive reference voltage
VREF- Negative reference voltage
IVDDA Current on the VDDA input pin
-
1.8(1)
-
V
-
-
VSSA
1000
-
-
1450
700
450
VREF+
1
µA
Peak
-
(2)
IVREF
Current on the VREF input pin
Conversion voltage range(3)
12-bit sampling rate
400
Average
-
VAIN
-
0(4)
-
-
-
-
-
-
-
-
-
V
Direct channels
Multiplexed channels
Direct channels
Multiplexed channels
Direct channels
Multiplexed channels
Direct channels
Multiplexed channels
-
-
-
-
-
-
-
-
Msps
0.76
1.07
0.8
10-bit sampling rate
8-bit sampling rate
6-bit sampling rate
Msps
Msps
Msps
fS
1.23
0.89
1.45
1
102/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Electrical characteristics
Table 55. ADC characteristics (continued)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Direct channels
2.4 V ≤VDDA ≤3.6 V
0.25
-
-
Multiplexed channels
2.4 V ≤VDDA ≤3.6 V
0.56
0.56
1
-
-
-
-
-
-
µs
(5)
tS
Sampling time
Direct channels
1.8 V ≤VDDA ≤2.4 V
Multiplexed channels
1.8 V ≤VDDA ≤2.4 V
-
4
1
-
-
384
1/fADC
µs
f
ADC = 16 MHz
24.75
Total conversion time
tCONV
4 to 384 (sampling phase) +12
(successive approximation)
(including sampling time)
-
1/fADC
Direct channels
Multiplexed channels
12-bit conversions
6/8/10-bit conversions
12-bit conversions
6/8/10-bit conversions
-
-
-
Internal sample and hold
capacitor
CADC
fTRIG
fTRIG
16
pF
-
-
-
-
-
-
-
-
-
-
-
-
Tconv+1 1/fADC
Tconv 1/fADC
Tconv+2 1/fADC
Tconv+1 1/fADC
External trigger frequency
Regular sequencer
-
-
External trigger frequency
Injected sequencer
-
(6)
RAIN
Signal source impedance
-
50
281
4.5
219
3.5
3.5
kΩ
ns
fADC = 16 MHz
219
3.5
156
2.5
-
Injection trigger conversion
latency
tlat
-
1/fADC
ns
fADC = 16 MHz
Regular trigger conversion
latency
tlatr
-
-
1/fADC
µs
tSTAB
Power-up time
1. The Vref+ input can be grounded if neither the ADC nor the DAC are used (this allows to shut down an external voltage
reference).
2. The current consumption through VREF is composed of two parameters:
- one constant (max 300 µA)
- one variable (max 400 µA), only during sampling time + 2 first conversion pulses
So, peak consumption is 300+400 = 700 µA and average consumption is 300 + [(4 sampling + 2) /16] x 400 = 450 µA at
1Msps
3. VREF+ can be internally connected to VDDA and VREF- can be internally connected to VSSA, depending on the package.
Refer to Section 4: Pin descriptions for further details.
4. VSSA or VREF- must be tied to ground.
5. Minimum sampling time is reached for an external input impedance limited to a value as defined in Table 57: Maximum
source impedance RAIN max.
6. External impedance has another high value limitation when using short sampling time as defined in Table 57: Maximum
source impedance RAIN max.
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113
Electrical characteristics
STM32L151xC/C-A STM32L152xC/C-A
(1)(2)
Table 56. ADC accuracy
Test conditions
Symbol
Parameter
Min(3)
Typ Max(3) Unit
ET
EO
EG
ED
EL
Total unadjusted error
Offset error
-
2
1
4
2
-
-
2.4 V ≤VDDA ≤ 3.6 V
2.4 V ≤VREF+ ≤ 3.6 V
fADC = 8 MHz, RAIN = 50 Ω
TA = -40 to 105 °C
Gain error
1.5
1
3.5
2
LSB
Differential linearity error
Integral linearity error
-
-
1.7
10
3
ENOB Effective number of bits
9.2
-
bits
dB
2.4 V ≤VDDA ≤ 3.6 V
VDDA = VREF+
fADC = 16 MHz, RAIN = 50 Ω
TA = -40 to 105 °C
Finput=10kHz
Signal-to-noise and
SINAD
57.5
62
-
distortion ratio
SNR
THD
Signal-to-noise ratio
57.5
-
62
-70
10
-
-65
-
Total harmonic distortion
ENOB Effective number of bits
9.2
bits
dB
1.8 V ≤VDDA ≤ 2.4 V
VDDA = VREF+
fADC = 8 MHz or 4 MHz, RAIN = 50 Ω
TA = -40 to 105 °C
Finput=10kHz
Signal-to-noise and
SINAD
57.5
62
-
distortion ratio
SNR
THD
ET
Signal-to-noise ratio
Total harmonic distortion
Total unadjusted error
Offset error
57.5
62
-70
4
-
-65
6.5
4
-
-
-
-
-
-
-
-
-
-
-
EO
EG
ED
EL
2
2.4 V ≤VDDA ≤ 3.6 V
1.8 V ≤VREF+ ≤ 2.4 V
fADC = 4 MHz, RAIN = 50 Ω
TA = -40 to 105 °C
Gain error
4
6
LSB
LSB
Differential linearity error
Integral linearity error
Total unadjusted error
Offset error
1
2
1.5
2
3
ET
3
EO
EG
ED
EL
1
1.5
2
1.8 V ≤VDDA ≤ 2.4 V
1.8 V ≤VREF+ ≤ 2.4 V
Gain error
1.5
1
f
ADC = 4 MHz, RAIN = 50 Ω
TA = -40 to 105 °C
Differential linearity error
Integral linearity error
2
1
1.5
1. ADC DC accuracy values are measured after internal calibration.
2. ADC accuracy vs. negative injection current: Injecting a negative current on any analog input pins should be avoided as
this significantly reduces the accuracy of the conversion being performed on another analog input. It is recommended to
add a Schottky diode (pin to ground) to analog pins which may potentially inject negative currents.
Any positive injection current within the limits specified for IINJ(PIN) and ΣIINJ(PIN) in Section 6.3.12 does not affect the ADC
accuracy.
3. Guaranteed by characterization results.
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DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Electrical characteristics
Figure 27. ADC accuracy characteristics
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Figure 28. Typical connection diagram using the ADC
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1. Refer to Table 57: Maximum source impedance RAIN max for the value of RAIN and Table 55: ADC
characteristics for the value of CADC
.
2. Cparasitic represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the
pad capacitance (roughly 7 pF). A high Cparasitic value will downgrade conversion accuracy. To remedy
this, fADC should be reduced.
DocID026119 Rev 6
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113
Electrical characteristics
STM32L151xC/C-A STM32L152xC/C-A
Figure 29. Maximum dynamic current consumption on V
supply pin during ADC
REF+
conversion
Sampling (n cycles)
Conversion (12 cycles)
ADC clock
I
ref+
700µA
300µA
MS36686V1
(1)
Table 57. Maximum source impedance R
max
AIN
RAIN max (kΩ)
Ts (cycles)
ADC=16 MHz(2)
Ts
(µs)
Multiplexed channels
Direct channels
f
2.4 V < VDDA < 3.6 V 1.8 V < VDDA < 2.4 V 2.4 V < VDDA < 3.6 V 1.8 V < VDDA < 2.4 V
0.25
Not allowed
0.8
Not allowed
Not allowed
0.8
0.7
2.0
Not allowed
1.0
4
9
0.5625
1
1.5
3
2.0
4.0
3.0
16
24
48
96
192
384
3.0
1.8
6.0
4.5
6.8
4.0
15.0
30.0
50.0
50.0
10.0
6
15.0
32.0
50.0
10.0
20.0
12
24
25.0
40.0
50.0
50.0
1. Guaranteed by design.
2. Number of samples calculated for fADC = 16 MHz. For fADC = 8 and 4 MHz the number of sampling cycles can be reduced
with respect to the minimum sampling time Ts (µs),
General PCB design guidelines
Power supply decoupling should be performed as shown in Figure 11. The applicable
procedure depends on whether V
is connected to V
or not. The 100 nF capacitors
REF+
DDA
should be ceramic (good quality). They should be placed as close as possible to the chip.
106/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Electrical characteristics
6.3.18
DAC electrical specifications
Data guaranteed by design, unless otherwise specified.
Table 58. DAC characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VDDA
Analog supply voltage
-
1.8
-
3.6
Reference supply
voltage
VREF+ must always be below
VDDA
V
VREF+
VREF-
1.8
-
3.6
Lower reference voltage
-
VSSA
Current consumption on No load, middle code (0x800)
VREF+ supply
-
-
-
-
130
220
210
320
220
350
320
520
(1)
IDDVREF+
No load, worst code (0x000)
VREF+ = 3.3 V
µA
Current consumption on No load, middle code (0x800)
VDDA supply
No load, worst code (0xF1C)
VDDA = 3.3 V
(1)
IDDA
(2)
RL
Resistive load
5
-
-
-
-
kΩ
pF
kΩ
DAC output buffer ON
Capacitive load
(2)
CL
50
20
RO
Output impedance
DAC output buffer OFF
12
16
DAC output buffer ON
0.2
-
VDDA – 0.2
V
Voltage on DAC_OUT
output
VDAC_OUT
VREF+
1LSB
–
DAC output buffer OFF
0.5
-
-
mV
CL ≤ 50 pF, RL ≥ 5 kΩ
DAC output buffer ON
1.5
3
Differential non
linearity(3)
DNL(1)
No RL, CL ≤ 50 pF
DAC output buffer OFF
-
-
-
-
-
-
1.5
2
3
4
CL ≤ 50 pF, RL ≥ 5 kΩ
DAC output buffer ON
INL(1)
Integral non linearity(4)
No RL, CL ≤ 50 pF
DAC output buffer OFF
LSB
2
4
CL ≤ 50 pF, RL ≥ 5 kΩ
DAC output buffer ON
±10
±5
±25
±8
±5
Offset error at code
0x800 (5)
Offset(1)
No RL, CL ≤ 50 pF
DAC output buffer OFF
Offset error at code
0x001(6)
No RL, CL ≤ 50 pF
DAC output buffer OFF
Offset1(1)
±1.5
DocID026119 Rev 6
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113
Electrical characteristics
STM32L151xC/C-A STM32L152xC/C-A
Table 58. DAC characteristics (continued)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VDDA = 3.3V
VREF+ = 3.0V
-20
-10
0
TA = 0 to 50 ° C
DAC output buffer OFF
Offset error temperature
coefficient (code 0x800)
dOffset/dT(1)
µV/°C
VDDA = 3.3V
VREF+ = 3.0V
0
20
50
TA = 0 to 50 ° C
DAC output buffer ON
CL ≤ 50 pF, RL ≥ 5 kΩ
-
-
+0.1 / -0.2% +0.2 / -0.5%
DAC output buffer ON
Gain(1)
Gain error(7)
%
No RL, CL ≤ 50 pF
DAC output buffer OFF
+0 / -0.2%
-2
+0 / -0.4%
0
VDDA = 3.3V
VREF+ = 3.0V
TA = 0 to 50 ° C
DAC output buffer OFF
-10
-40
Gain error temperature
coefficient
dGain/dT(1)
µV/°C
VDDA = 3.3V
VREF+ = 3.0V
TA = 0 to 50 ° C
DAC output buffer ON
-8
0
CL ≤ 50 pF, RL ≥ 5 kΩ
-
-
12
8
30
12
DAC output buffer ON
TUE(1)
Total unadjusted error
LSB
No RL, CL ≤ 50 pF
DAC output buffer OFF
Settling time (full scale:
for a 12-bit code
transition between the
lowest and the highest
input codes till
DAC_OUT reaches final
value ±1LSB
tSETTLING
CL ≤ 50 pF, RL ≥ 5 kΩ
-
-
7
12
µs
Max frequency for a
correct DAC_OUT
change (95% of final
value) with 1 LSB
variation in the input
code
Update rate
CL ≤ 50 pF, RL ≥ 5 kΩ
-
1
Msps
Wakeup time from off
state (setting the ENx bit
in the DAC Control
register)(8)
tWAKEUP
CL ≤ 50 pF, RL ≥ 5 kΩ
CL ≤ 50 pF, RL ≥ 5 kΩ
-
-
9
15
µs
VDDA supply rejection
ratio (static DC
measurement)
PSRR+
-60
-35
dB
1. Data based on characterization results.
2. Connected between DAC_OUT and V
.
SSA
3. Difference between two consecutive codes - 1 LSB.
108/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Electrical characteristics
4. Difference between measured value at Code i and the value at Code i on a line drawn between Code 0 and last Code 4095.
5. Difference between the value measured at Code (0x800) and the ideal value = VREF+/2.
6. Difference between the value measured at Code (0x001) and the ideal value.
7. Difference between ideal slope of the transfer function and measured slope computed from code 0x000 and 0xFFF when
buffer is OFF, and from code giving 0.2 V and (V
– 0.2) V when buffer is ON.
DDA
8. In buffered mode, the output can overshoot above the final value for low input code (starting from min value).
Figure 30. 12-bit buffered /non-buffered DAC
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1. The DAC integrates an output buffer that can be used to reduce the output impedance and to drive external
loads directly without the use of an external operational amplifier. The buffer can be bypassed by
configuring the BOFFx bit in the DAC_CR register.
6.3.19
Operational amplifier characteristics
Table 59. Operational amplifier characteristics
Symbol
Parameter
Condition(1)
Min(2)
Typ
Max(2)
Unit
CMIR
Common mode input range
-
0
-
VDD
Maximum
calibration range
-
-
-
-
-
-
15
VIOFFSET
Input offset voltage
mV
After offset
calibration
1.5
Normal mode
-
-
-
-
-
-
-
-
40
80
1
µV/°C
Input offset voltage
drift
ΔVIOFFSET
Low-power mode
Dedicated input
IIB
Input current bias
75 °C
nA
General purpose
input
-
-
10
Normal mode
-
-
-
-
-
-
-
-
-
500
100
220
60
-
ILOAD
Drive current
Consumption
µA
µA
dB
Low-power mode
Normal mode
-
100
30
-85
-90
No load,
IDD
quiescent mode
Low-power mode
Normal mode
-
-
Common mode
rejection ration
CMRR
Low-power mode
-
DocID026119 Rev 6
109/134
113
Electrical characteristics
STM32L151xC/C-A STM32L152xC/C-A
Table 59. Operational amplifier characteristics (continued)
Symbol
Parameter
Normal mode
Condition(1)
Min(2)
Typ
Max(2)
Unit
-
-85
-90
-
Power supply
rejection ratio
PSRR
DC
dB
Low-power mode
Normal mode
-
-
400
150
200
70
1000
300
500
150
3000
800
2200
800
VDD>2.4 V
Low-power mode
Normal mode
GBW
Bandwidth
kHZ
V
DD<2.4 V
Low-power mode
VDD>2.4 V
Normal mode
(between 0.1 V and
VDD-0.1 V)
-
700
-
SR
AO
Slew rate
V/ms
dB
Low-power mode
Normal mode
V
DD>2.4 V
-
-
100
300
50
100
110
-
-
-
V
DD<2.4 V
Low-power mode
Normal mode
-
-
55
65
4
-
Open loop gain
Low-power mode
Normal mode
-
-
RL
CL
Resistive load
Capacitive load
VDD<2.4 V
kΩ
Low-power mode
20
-
-
-
-
-
50
pF
VDD
100
-
Normal mode
-
-
High saturation
voltage
VOHSAT
VOLSAT
ILOAD = max or
RL = min
Low-power mode
Normal mode
VDD-50
-
-
-
100
50
-
mV
-
-
-
-
Low saturation
voltage
Low-power mode
-
ϕm
Phase margin
Gain margin
-
-
60
-12
°
GM
-
dB
Offset trim time: during calibration,
minimum time needed between two
steps to have 1 mV accuracy
tOFFTRIM
-
-
1
-
ms
µs
CL ≤50 pf,
RL ≥ 4 kΩ
Normal mode
Wakeup time
-
-
10
30
-
-
tWAKEUP
CL ≤50 pf,
Low-power mode
RL ≥ 20 kΩ
1. Operating conditions are limited to junction temperature (0 °C to 105 °C) when VDD is below 2 V. Otherwise to the full
ambient temperature range (-40 °C to 85 °C, -40 °C to 105 °C).
2. Guaranteed by characterization results.
110/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Electrical characteristics
6.3.20
Temperature sensor characteristics
Table 60. Temperature sensor calibration values
Calibration value name
Description
Memory address
TS ADC raw data acquired at
temperature of 30 °C 5 °C
TS_CAL1
0x1FF8 00FA - 0x1FF8 00FB
VDDA= 3 V 10 mV
TS ADC raw data acquired at
temperature of 110 °C 5 °C
TS_CAL2
0x1FF8 00FE - 0x1FF8 00FF
VDDA= 3 V 10 mV
Table 61. Temperature sensor characteristics
Symbol
Parameter
Min
Typ
Max
Unit
(1)
TL
VSENSE linearity with temperature
-
1.48
612
-
1
1.61
626.8
3.4
2
1.75
641.5
6
°C
mV/°C
mV
Avg_Slope(1) Average slope
V110
Voltage at 110°C ±5°C(2)
IDDA
(3)
Current consumption
Startup time
µA
(TEMP)
(3)
tSTART
-
-
10
µs
ADC sampling time when reading the
temperature
(3)
TS_temp
4
-
-
1. Guaranteed by characterization results.
2. Measured at VDD = 3 V ±10 mV. V110 ADC conversion result is stored in the TS_CAL2 byte.
3. Guaranteed by design.
6.3.21
Comparator
Table 62. Comparator 1 characteristics
Symbol
Parameter
Conditions
Min(1)
Typ
Max(1)
Unit
VDDA
R400K
R10K
Analog supply voltage
R400K value
-
-
-
1.65
3.6
V
-
-
400
10
-
-
kΩ
R10K value
Comparator 1 input
voltage range
VIN
-
0.6
-
VDDA
V
tSTART
td
Comparator startup time
Propagation delay(2)
Comparator offset
-
-
-
-
-
-
7
3
3
10
10
10
µs
Voffset
mV
VDDA = 3.6 V
VIN+ = 0 V
VIN- = VREFINT
TA = 25 °C
Comparator offset
dVoffset/dt variation in worst voltage
stress conditions
0
-
1.5
10
mV/1000 h
nA
ICOMP1
Current consumption(3)
-
160
260
DocID026119 Rev 6
111/134
113
Electrical characteristics
STM32L151xC/C-A STM32L152xC/C-A
1. Guaranteed by characterization results.
2. The delay is characterized for 100 mV input step with 10 mV overdrive on the inverting input, the non-
inverting input set to the reference.
3. Comparator consumption only. Internal reference voltage not included.
Table 63. Comparator 2 characteristics
Symbol
Parameter
Conditions
Min Typ Max(1) Unit
VDDA
VIN
Analog supply voltage
-
-
1.65
-
3.6
VDDA
20
25
3.5
6
V
V
Comparator 2 input voltage range
0
-
-
-
-
-
-
-
-
Fast mode
15
20
1.8
2.5
0.8
1.2
4
tSTART
Comparator startup time
Slow mode
1.65 V ≤VDDA ≤2.7 V
2.7 V ≤VDDA ≤3.6 V
1.65 V ≤VDDA ≤2.7 V
2.7 V ≤VDDA ≤3.6 V
td slow
Propagation delay(2) in slow mode
µs
2
td fast
Propagation delay(2) in fast mode
Comparator offset error
4
Voffset
20
mV
VDDA = 3.3V
TA = 0 to 50 °C
dThreshold/ Threshold voltage temperature
V- =VREFINT
3/4 VREFINT
1/2 VREFINT
1/4 VREFINT
,
ppm
/°C
-
15
100
dt
coefficient
,
,
.
Fast mode
Slow mode
-
-
3.5
0.5
5
2
ICOMP2
Current consumption(3)
µA
1. Guaranteed by characterization results.
2. The delay is characterized for 100 mV input step with 10 mV overdrive on the inverting input, the non-
inverting input set to the reference.
3. Comparator consumption only. Internal reference voltage (necessary for comparator operation) is not
included.
112/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Electrical characteristics
6.3.22
LCD controller
The device embeds a built-in step-up converter to provide a constant LCD reference voltage
independently from the V voltage. An external capacitor C must be connected to the
DD
ext
V
pin to decouple this converter.
LCD
Table 64. LCD controller characteristics
Symbol
Parameter
LCD external voltage
Min
Typ
Max
Unit
VLCD
VLCD0
VLCD1
VLCD2
VLCD3
VLCD4
VLCD5
VLCD6
VLCD7
Cext
-
-
2.6
3.6
LCD internal reference voltage 0
LCD internal reference voltage 1
LCD internal reference voltage 2
LCD internal reference voltage 3
LCD internal reference voltage 4
LCD internal reference voltage 5
LCD internal reference voltage 6
LCD internal reference voltage 7
VLCD external capacitance
-
-
-
2.73
2.86
2.98
3.12
3.26
3.4
-
-
-
-
-
V
-
-
-
-
-
-
-
3.55
-
-
0.1
2
µF
µA
Supply current at VDD = 2.2 V
-
3.3
-
(1)
ILCD
Supply current at VDD = 3.0 V
-
3.1
-
(2)
RHtot
Low drive resistive network overall value
High drive resistive network total value
Segment/Common highest level voltage
Segment/Common 3/4 level voltage
Segment/Common 2/3 level voltage
Segment/Common 1/2 level voltage
Segment/Common 1/3 level voltage
Segment/Common 1/4 level voltage
Segment/Common lowest level voltage
5.28
6.6
7.92
MΩ
kΩ
V
(2)
RL
192
240
288
V44
V34
V23
V12
V13
V14
V0
-
-
-
VLCD
3/4 VLCD
2/3 VLCD
1/2 VLCD
1/3 VLCD
1/4 VLCD
-
-
-
-
-
-
-
-
-
V
-
-
0
Segment/Common level voltage error
ΔVxx(3)
-
-
50
mV
TA = -40 to 105 °C
1. LCD enabled with 3 V internal step-up active, 1/8 duty, 1/4 bias, division ratio= 64, all pixels active, no LCD
connected.
2. Guaranteed by design.
3. Guaranteed by characterization results.
DocID026119 Rev 6
113/134
113
Package information
STM32L151xC/C-A STM32L152xC/C-A
7
Package information
In order to meet environmental requirements, ST offers these devices in different grades of
®
®
ECOPACK packages, depending on their level of environmental compliance. ECOPACK
specifications, grade definitions and product status are available at: www.st.com.
®
ECOPACK is an ST trademark.
7.1
LQFP144, 20 x 20 mm, 144-pin low-profile quad flat package
information
Figure 31. LQFP144, 20 x 20 mm, 144-pin low-profile quad flat package outline
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114/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Package information
Table 65. LQFP144, 20 x 20 mm, 144-pin low-profile quad flat package mechanical
data
millimeters
Typ
inches(1)
Symbol
Min
Max
Min
Typ
Max
A
A1
A2
b
-
0.050
1.350
0.170
0.090
21.800
19.800
-
-
1.600
0.150
1.450
0.270
0.200
22.200
20.200
-
-
-
0.0630
0.0059
0.0571
0.0106
0.0079
0.8740
0.7953
-
-
0.0020
0.0531
0.0067
0.0035
0.8583
0.7795
-
-
1.400
0.220
-
0.0551
0.0087
-
c
D
22.000
20.000
17.500
22.000
20.000
17.500
0.500
0.600
1.000
3.5°
0.8661
0.7874
0.6890
0.8661
0.7874
0.6890
0.0197
0.0236
0.0394
3.5°
D1
D3
E
21.800
19.800
-
22.200
20.200
-
0.8583
0.7795
-
0.8740
0.7953
-
E1
E3
e
-
-
-
-
L
0.450
-
0.750
-
0.0177
-
0.0295
-
L1
k
0°
7°
0°
7°
ccc
-
-
0.080
-
-
0.0031
1. Values in inches are converted from mm and rounded to 4 decimal digits.
DocID026119 Rev 6
115/134
133
Package information
STM32L151xC/C-A STM32L152xC/C-A
Figure 32. LQFP144, 20 x 20 mm, 144-pin low-profile quad flat package
recommended footprint
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Marking of engineering samples
The following figure gives an example of topside marking orientation versus pin 1 identifier
location.
Figure 33. LQFP144, 20 x 20 mm, 144-pin low-profile quad flat package top view
example
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qualified and therefore not yet ready to be used in production and any consequences deriving from such
usage will not be at ST charge. In no event, ST will be liable for any customer usage of these engineering
samples in production. ST Quality has to be contacted prior to any decision to use these Engineering
samples to run qualification activity
116/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Package information
7.2
LQFP100, 14 x 14 mm, 100-pin low-profile quad flat package
information
Figure 34. LQFP100, 14 x 14 mm, 100-pin low-profile quad flat package outline
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Table 66. LQPF100, 14 x 14 mm, 100-pin low-profile quad flat package mechanical
data
millimeters
Typ
inches(1)
Symbol
Min
Max
Min
Typ
Max
A
A1
A2
b
-
-
1.600
0.150
1.450
0.270
0.200
16.200
14.200
-
-
-
0.0630
0.0059
0.0571
0.0106
0.0079
0.6378
0.5591
-
0.050
1.350
0.170
0.090
15.800
13.800
-
-
0.0020
0.0531
0.0067
0.0035
0.6220
0.5433
-
-
1.400
0.220
-
0.0551
0.0087
-
c
D
16.000
14.000
12.000
16.000
14.000
0.6299
0.5512
0.4724
0.6299
0.5512
D1
D3
E
15.800
13.800
16.200
14.200
0.6220
0.5433
0.6378
0.5591
E1
DocID026119 Rev 6
117/134
133
Package information
STM32L151xC/C-A STM32L152xC/C-A
Table 66. LQPF100, 14 x 14 mm, 100-pin low-profile quad flat package mechanical
data (continued)
millimeters
Typ
inches(1)
Symbol
Min
Max
Min
Typ
Max
E3
e
-
12.000
0.500
0.600
1.000
3.5°
-
-
-
0.4724
0.0197
0.0236
0.0394
3.5°
-
-
-
-
L
0.450
0.750
-
0.0177
0.0295
-
L1
k
-
0.0°
-
-
0.0°
-
7.0°
0.080
7.0°
0.0031
ccc
-
-
1. Values in inches are converted from mm and rounded to 4 decimal digits.
Figure 35. LQFP100, 14 x 14 mm, 100-pin low-profile quad flat package
recommended footprint
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1. Dimensions are in millimeters.
118/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Package information
Marking of engineering samples
The following figure gives an example of topside marking orientation versus pin 1 identifier
location.
Figure 36. LQFP100, 14 x 14 mm, 100-pin low-profile quad flat package top view
example
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1. Parts marked as “ES”, “E” or accompanied by an Engineering Sample notification letter, are not yet
qualified and therefore not yet ready to be used in production and any consequences deriving from such
usage will not be at ST charge. In no event, ST will be liable for any customer usage of these engineering
samples in production. ST Quality has to be contacted prior to any decision to use these Engineering
samples to run qualification activity
DocID026119 Rev 6
119/134
133
Package information
STM32L151xC/C-A STM32L152xC/C-A
7.3
LQFP64, 10 x 10 mm, 64-pin low-profile quad flat package
information
Figure 37. LQFP64, 10 x 10 mm, 64-pin low-profile quad flat package outline
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1. Drawing is not to scale.
Table 67. LQFP64, 10 x 10 mm 64-pin low-profile quad flat package mechanical
data
millimeters
Typ
inches(1)
Symbol
Min
Max
Min
Typ
Max
A
A1
A2
b
-
-
1.600
-
-
0.0630
0.050
-
0.150
0.0020
-
0.0059
1.350
1.400
0.220
-
1.450
0.0531
0.0551
0.0087
-
0.0571
0.170
0.270
0.0067
0.0106
c
0.090
0.200
0.0035
0.0079
D
-
-
-
-
-
12.000
10.000
7.500
12.000
10.000
-
-
-
-
-
-
-
-
-
-
0.4724
0.3937
0.2953
0.4724
0.3937
-
-
-
-
-
D1
D3
E
E1
120/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Package information
Table 67. LQFP64, 10 x 10 mm 64-pin low-profile quad flat package mechanical data
(continued)
millimeters
Typ
inches(1)
Symbol
Min
Max
Min
Typ
Max
E3
e
-
7.500
0.500
3.5°
-
-
0.2953
0.0197
3.5°
-
-
-
7°
-
-
7°
K
0°
0°
L
0.450
0.600
1.000
-
0.750
-
0.0177
0.0236
0.0394
-
0.0295
-
L1
ccc
-
-
-
-
0.080
0.0031
1. Values in inches are converted from mm and rounded to 4 decimal digits.
Figure 38. LQFP64, 10 x 10 mm, 64-pin low-profile quad flat package
recommended footprint
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1. Dimensions are in millimeters.
DocID026119 Rev 6
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133
Package information
STM32L151xC/C-A STM32L152xC/C-A
Marking of engineering samples
The following figure gives an example of topside marking orientation versus pin 1 identifier
location.
Figure 39. LQFP64 10 x 10 mm, 64-pin low-profile quad flat package top view example
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1. Parts marked as “ES”, “E” or accompanied by an Engineering Sample notification letter, are not yet
qualified and therefore not yet ready to be used in production and any consequences deriving from such
usage will not be at ST charge. In no event, ST will be liable for any customer usage of these engineering
samples in production. ST Quality has to be contacted prior to any decision to use these Engineering
samples to run qualification activity
122/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Package information
7.4
UFBGA132, 7 x 7 mm, 132-ball ultra thin, fine-pitch ball grid
array package information
Figure 40. UFBGA132, 7 x 7 mm, 132-ball ultra thin, fine-pitch ball grid array package
outline
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1. Drawing is not to scale.
Table 68. UFBGA132, 7 x 7 mm, 132-ball ultra thin, fine-pitch ball grid array
package mechanical data
millimeters
Typ
inches(1)
Symbol
Min
Max
Min
Typ
Max
A
A1
A2
A3
b
0.460
0.050
0.400
0.270
0.170
6.950
6.950
-
0.530
0.080
0.450
0.320
0.280
7.000
7.000
0.500
0.750
0.600
0.110
0.500
0.370
0.330
7.050
7.050
-
0.0181
0.0020
0.0157
0.0106
0.0067
0.2736
0.2736
-
0.0209
0.0031
0.0177
0.0126
0.0110
0.2756
0.2756
0.0197
0.0295
0.0236
0.0043
0.0197
0.0146
0.0130
0.2776
0.2776
-
D
E
e
F
0.700
0.800
0.0276
0.0315
DocID026119 Rev 6
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133
Package information
STM32L151xC/C-A STM32L152xC/C-A
Table 68. UFBGA132, 7 x 7 mm, 132-ball ultra thin, fine-pitch ball grid array
package mechanical data (continued)
millimeters
Typ
inches(1)
Symbol
Min
Max
Min
Typ
Max
ddd
eee
fff
-
-
-
-
-
-
0.080
0.150
0.050
-
-
-
-
-
-
0.0031
0.0059
0.0020
1. Values in inches are converted from mm and rounded to 4 decimal digits.
Figure 41. UFBGA132, 7 x 7 mm, 132-ball ultra thin, fine-pitch ball grid array package
recommended footprint
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124/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Package information
Marking of engineering samples
The following figure gives an example of topside marking orientation versus ball A1 identifier
location.
Figure 42. UFBGA132, 7 x 7 mm, 132-ball ultra thin, fine-pitch ball grid array package
top view example
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1. Parts marked as “ES”, “E” or accompanied by an Engineering Sample notification letter, are not yet
qualified and therefore not yet ready to be used in production and any consequences deriving from such
usage will not be at ST charge. In no event, ST will be liable for any customer usage of these engineering
samples in production. ST Quality has to be contacted prior to any decision to use these Engineering
samples to run qualification activity
DocID026119 Rev 6
125/134
133
Package information
STM32L151xC/C-A STM32L152xC/C-A
7.5
WLCSP64, 0.4 mm pitch wafer level chip scale package
information
Figure 43. WLCSP64, 0.4 mm pitch wafer level chip scale package outline
EEE
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$ꢉ-9B0(B9ꢄ
1. Drawing is not to scale.
Table 69. WLCSP64, 0.4 mm pitch wafer level chip scale package mechanical
data
millimeters
Typ
inches(1)
Symbol
Min
Max
Min
Typ
Max
A
0.540
0.570
0.190
0.380
0.600
0.0205
0.0224
0.0075
0.0150
0.0236
A1
A2
-
-
-
-
-
-
-
-
126/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Package information
Table 69. WLCSP64, 0.4 mm pitch wafer level chip scale package mechanical data
(continued)
millimeters
Typ
inches(1)
Symbol
Min
Max
Min
Typ
Max
b(2)
D
0.240
0.270
0.300
4.574
4.946
-
0.0094
0.0106
0.0118
0.1801
0.1947
-
4.504
4.539
0.1773
0.1787
E
4.876
4.911
0.1920
0.1933
e
-
-
-
-
-
-
-
-
-
0.400
-
-
-
-
-
-
-
-
-
0.0157
e1
F
2.800
-
0.1102
-
0.870
-
0.0343
-
G
1.056
-
0.0416
-
aaa
bbb
ccc
ddd
eee
-
-
-
-
-
0.100
0.100
0.100
0.050
0.050
-
-
-
-
-
0.0039
0.0039
0.0039
0.0020
0.0020
1. Values in inches are converted from mm and rounded to 4 decimal digits.
2. Dimension is measured at the maximum bump diameter parallel to primary datum Z.
Figure 44. WLCSP64, 0.4 mm pitch wafer level chip scale package
recommended footprint
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Table 70. WLCSP64, 0.4 mm pitch package recommended PCB design rules
Dimension
Recommended values
Pitch
Dpad
0.4
260 µm max. (circular)
220 µm recommended
Dsm
300 µm min. (for 260 µm diameter pad)
Non-solder mask defined via underbump allowed.
PCB pad design
DocID026119 Rev 6
127/134
133
Package information
STM32L151xC/C-A STM32L152xC/C-A
Marking of engineering samples
The following figure gives an example of topside marking orientation versus ball A1 identifier
location.
Figure 45. WLCSP64, 0.4 mm pitch wafer level chip scale package top view example
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1. Parts marked as “ES”, “E” or accompanied by an Engineering Sample notification letter, are not yet
qualified and therefore not yet ready to be used in production and any consequences deriving from such
usage will not be at ST charge. In no event, ST will be liable for any customer usage of these engineering
samples in production. ST Quality has to be contacted prior to any decision to use these Engineering
samples to run qualification activity
128/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Package information
7.6
Thermal characteristics
The maximum chip-junction temperature, T max, in degrees Celsius, may be calculated
J
using the following equation:
T max = T max + (P max × Θ )
J
A
D
JA
Where:
•
•
•
•
T max is the maximum ambient temperature in ° C,
A
Θ
is the package junction-to-ambient thermal resistance, in °C/W,
JA
P max is the sum of P
max and P max (P max = P
max + P max),
INT I/O
D
INT
I/O
D
P
max is the product of I and V , expressed in Watts. This is the maximum chip
DD DD
INT
internal power.
P
max represents the maximum power dissipation on output pins where:
I/O
P
max = Σ (V × I ) + Σ((V – V ) × I ),
OL OL DD OH OH
I/O
taking into account the actual V / I and V / I of the I/Os at low and high level in the
OL OL
OH OH
application.
Table 71. Thermal characteristics
Symbol
Parameter
Value
Unit
Thermal resistance junction-ambient
LQFP144 - 20 x 20 mm / 0.5 mm pitch
40
Thermal resistance junction-ambient
UFBGA132 - 7 x 7 mm
60
43
46
46
Thermal resistance junction-ambient
LQFP100 - 14 x 14 mm / 0.5 mm pitch
Θ
°C/W
JA
Thermal resistance junction-ambient
LQFP64 - 10 x 10 mm / 0.5 mm pitch
Thermal resistance junction-ambient
WLCSP64 - 0.400 mm pitch
DocID026119 Rev 6
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133
Package information
STM32L151xC/C-A STM32L152xC/C-A
Figure 46. Thermal resistance suffix 6
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Figure 47. Thermal resistance suffix 7
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7.6.1
Reference document
JESD51-2 Integrated Circuits Thermal Test Method Environment Conditions - Natural
Convection (Still Air). Available from www.jedec.org.
130/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Part numbering
8
Part numbering
Table 72. STM32L151xC/C-A and STM32L152xC/C-A ordering information scheme
Example:
STM32 L 151 R C
T
6
A
D
TR
Device family
STM32 = ARM-based 32-bit microcontroller
Product type
L = Low-power
Device subfamily
151: Devices without LCD
152: Devices with LCD
Pin count
R = 64 pins
V = 100 pins
Z = 144 pins
Q = 132 pins
Flash memory size
C = 256 Kbytes of Flash memory
Package
H = BGA
T = LQFP
Y = WLCSP
Temperature range
6 = Industrial temperature range, –40 to 85 °C
7 = Industrial temperature range, –40 to 105 °C
Identification code
A = Proprietary identification code
Blank = No proprietary identification code
Options
No character = VDD range: 1.8 to 3.6 V and BOR enabled
D = VDD range: 1.65 to 3.6 V and BOR disabled
Packing
TR = tape and reel
No character = tray or tube
For a list of available options (speed, package, etc.) or for further information on any aspect
of this device, please contact the nearest ST sales office.
DocID026119 Rev 6
131/134
133
Revision History
STM32L151xC/C-A STM32L152xC/C-A
9
Revision History
Table 73. Document revision history
Changes
Date
Revision
01-Apr-2014
1
Initial release.
Updated Table 3: Functionalities depending on the operating power
supply range.
Updated Table 17: Current consumption in Run mode, code with data
processing running from Flash.
Modified IDD(LP Sleep) (TIM9 and USART1 enabled, Flash ON, VDD
from 1.65 V to 3.6 V) in Table 21: Current consumption in Low-power
sleep mode.
07-Apr-2014
12-June-2014
13-Sept-2014
2
3
4
Updated VIH(NRST) minimum value in Table 45: NRST pin
characteristics.
Added Table 41: UFBGA132, 7 x 7 mm, 132-ball ultra thin, fine-pitch
ball grid array package recommended footprint..
Updated title removing memory I/F.
Removed ambiguity of “ambient temperature” in the electrical
characteristics description.
updated Figure 1 with graphic improvements.
Updated Section 3.17: Communication interfaces putting I2S
characteristics inside.
Updated DMIPS features in cover page and Section 2: Description.
Updated max temperature at 105°C instead of 85°C in the whole
datasheet.
Updated Flash switched ON & OFF conditions in Table 19: Current
consumption in Sleep mode.
Updated Table 24: Peripheral current consumption with new measured
current values.
Updated Table 57: Maximum source impedance RAIN max adding
note 2.
132/134
DocID026119 Rev 6
STM32L151xC/C-A STM32L152xC/C-A
Revision History
Table 73. Document revision history (continued)
Date
Revision
Changes
Updated Section 7: Package information with new package device
marking and new paragraph structure.
10-Mar-2015
5
Updated Figure 8: Memory map.
Updated Table 16: Embedded internal reference voltage temperature
coefficient at 100ppm/°C.
and table note 3: “guaranteed by design” changed by “guaranteed by
characterization results”.
Updated Table 63: Comparator 2 characteristics new maximum
threshold voltage temperature coefficient at 100ppm/°C.
Updated Table 8: STM32L151xC/C-A and STM32L152xC/C-A pin
definitions ADC inputs.
Updated cover page putting eight SPIs in the peripheral
communication interface list.
18-Mar-2016
6
Updated Table 2: Ultra-low-power STM32L151xC/C-A and
STM32L152xC/C-A device features and peripheral counts SPI and I2S
lines.
Updated Table 39: ESD absolute maximum ratings CDM class.
Updated all the notes, removing ‘not tested in production’.
Updated Table 10: Voltage characteristics adding note about VREF-
pin.
Updated Table 5: Functionalities depending on the working mode (from
Run/active down to standby) LSI and LSE functionalities putting “Y” in
Standby mode.
Removed note 1 below Figure 2: Clock tree.
DocID026119 Rev 6
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133
STM32L151xC/C-A STM32L152xC/C-A
IMPORTANT NOTICE – PLEASE READ CAREFULLY
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and
improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on
ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order
acknowledgement.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or
the design of Purchasers’ products.
No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2016 STMicroelectronics – All rights reserved
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