STM8AF5198TDY [STMICROELECTRONICS]

8-BIT, FLASH, 24MHz, MICROCONTROLLER, PQFP48, 7 X 7 MM, ROHS COMPLIANT, LQFP-48;
STM8AF5198TDY
型号: STM8AF5198TDY
厂家: ST    ST
描述:

8-BIT, FLASH, 24MHz, MICROCONTROLLER, PQFP48, 7 X 7 MM, ROHS COMPLIANT, LQFP-48

文件: 总110页 (文件大小:1617K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
STM8AF5xxx STM8AF6x69/7x/8x/9x/Ax  
Automotive 8-bit MCU, with up to 128 Kbytes Flash, data EEPROM,  
10-bit ADC, timers, LIN, CAN, USART, SPI, I2C, 3 to 5.5 V  
Datasheet production data  
Features  
Core  
– Max f  
: 24 MHz  
CPU  
LQFP48 7x7  
LQFP64 10x10  
LQFP80 14x14  
– Advanced STM8A core with Harvard  
architecture and 3-stage pipeline  
– Average 1.6 cycles/instruction resulting in  
10 MIPS at 16 MHz f  
standard benchmark  
for industry  
CPU  
LQFP32 7x7  
VFQFPN32 5x5  
Communication interfaces  
Memories  
– High speed 1 Mbit/s CAN 2.0B interface  
– USART with clock output for synchronous  
operation - LIN master mode  
– LINUART LIN 2.1 compliant, master/slave  
modes with automatic resynchronization  
– Program memory: 32 to 128 Kbytes Flash  
program; data retention 20 years at 55 °C  
– Data memory: up to 2 Kbytes true data  
EEPROM; endurance 300 kcycles  
– RAM: 2 Kbytes to 6 Kbytes  
– SPI interface up to 10 Mbit/s or f  
– I C interface up to 400 Kbit/s  
/2  
MASTER  
2
Clock management  
– Low-power crystal resonator oscillator with  
external clock input  
– Internal, user-trimmable 16 MHz RC and  
low-power 128 kHz RC oscillators  
– Clock security system with clock monitor  
Analog to digital converter (ADC)  
– 10-bit resolution, 2 LSB TUE, 1 LSB  
linearity and up to 16 multiplexed channels  
Operating temperature up to 150 °C  
Qualification conforms to AEC-Q100 rev G  
Reset and supply management  
– Wait/auto-wakeup/Halt low-power modes  
with user definable clock gating  
– Low consumption power-on and power-  
down reset  
(1)  
Table 1.  
Device summary  
Part numbers: STM8AF52xx (with CAN)  
STM8AF52AA, STM8AF52A9, STM8AF52A8, STM8AF528A,  
STM8AF5289, STM8AF5288, STM8AF5269, STM8AF5268  
Interrupt management  
Part numbers: STM8AF6269/8x/Ax  
– Nested interrupt controller with 32 vectors  
– Up to 37 external interrupts on 5 vectors  
STM8AF62AA, STM8AF62A9, STM8AF62A8, STM8AF628A,  
STM8AF6289, STM8AF6288, STM8AF6286, STM8AF6269,  
STM8AF62A6,  
Timers  
Part numbers: STM8AF51xx (with CAN)(2)  
– 2 general purpose 16-bit timers with up to 3  
CAPCOM channels each (IC, OC, PWM)  
– Advanced control timer: 16-bit, 4 CAPCOM  
channels, 3 complementary outputs, dead-  
time insertion and flexible synchronization  
– 8-bit AR basic timer with 8-bit prescaler  
– Auto-wakeup timer  
STM8AF51AA, STM8AF51A9, STM8AF51A8, STM8AF519A,  
STM8AF5199, STM8AF5198, STM8AF518A, STM8AF5189,  
STM8AF5188, STM8AF5179, STM8AF5178, STM8AF5169,  
STM8AF5168  
(2)  
Part numbers: STM8AF6169/7x/8x/9x/Ax  
STM8AF61AA, STM8AF61A9, STM8AF61A8, STM8AF619A,  
STM8AF6199, STM8AF6198, STM8AF618A, STM8AF6189,  
STM8AF6188, STM8AF6186, STM8AF6179, STM8AF6178,  
STM8AF6176, STM8AF6169  
– Window and independent watchdog timers  
I/Os  
1. In the order code, ‘F’ applies to devices with Flash program  
memory and data EEPROM while ‘H’ refers to devices with  
Flash program memory only. ‘F’ is replaced by ‘P’ for devices  
with FASTROM (see Tables 2, 3, 4, and 5, and Figure 52).  
– Up to 68 user pins (11 high sink I/Os)  
– Highly robust I/O design, immune against  
current injection  
2. Not recommended for new design.  
July 2012  
Doc ID 14395 Rev 9  
1/110  
This is information on a product in full production.  
www.st.com  
1
 
 
 
 
 
 
 
 
 
 
 
Contents  
STM8AF52/62xx, STM8AF51/61xx  
Contents  
1
2
3
4
5
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Product line-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
Product overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
5.1  
STM8A central processing unit (CPU) . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
5.1.1  
5.1.2  
5.1.3  
Architecture and registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
Instruction set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
5.2  
Single wire interface module (SWIM) and debug module (DM) . . . . . . . . 16  
5.2.1  
5.2.2  
SWIM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
Debug module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
5.3  
5.4  
Interrupt controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
Flash program and data EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
5.4.1  
5.4.2  
5.4.3  
5.4.4  
Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
Write protection (WP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
Protection of user boot code (UBC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
Read-out protection (ROP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
5.5  
Clock controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18  
5.5.1  
5.5.2  
5.5.3  
5.5.4  
5.5.5  
5.5.6  
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18  
16 MHz high-speed internal RC oscillator (HSI) . . . . . . . . . . . . . . . . . . 18  
128 kHz low-speed internal RC oscillator (LSI) . . . . . . . . . . . . . . . . . . . 19  
24 MHz high-speed external crystal oscillator (HSE) . . . . . . . . . . . . . . 19  
External clock input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
Clock security system (CSS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
5.6  
5.7  
Low-power operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
5.7.1  
5.7.2  
5.7.3  
Watchdog timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
Auto-wakeup counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
Beeper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
2/110  
Doc ID 14395 Rev 9  
STM8AF52/62xx, STM8AF51/61xx  
Contents  
5.7.4  
5.7.5  
Advanced control and general purpose timers . . . . . . . . . . . . . . . . . . . 21  
Basic timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22  
5.8  
5.9  
Analog to digital converter (ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23  
Communication interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23  
5.9.1  
5.9.2  
Universal synchronous/asynchronous receiver transmitter (USART) . . 23  
Universal asynchronous receiver/transmitter with LIN support  
(LINUART) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25  
5.9.3  
5.9.4  
5.9.5  
Serial peripheral interface (SPI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26  
2
Inter integrated circuit (I C) interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 26  
Controller area network interface (beCAN) . . . . . . . . . . . . . . . . . . . . . . 27  
5.10 Input/output specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28  
6
7
Pinouts and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29  
6.1  
6.2  
Package pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29  
Alternate function remapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37  
Memory and register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38  
7.1  
7.2  
Memory map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38  
Register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39  
8
Interrupt table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50  
Option bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51  
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56  
9
10  
10.1 Parameter conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56  
10.1.1 Minimum and maximum values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56  
10.1.2 Typical values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56  
10.1.3 Typical curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56  
10.1.4 Loading capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56  
10.1.5 Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57  
10.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57  
10.3 Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59  
10.3.1 VCAP external capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60  
10.3.2 Supply current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60  
10.3.3 External clock sources and timing characteristics . . . . . . . . . . . . . . . . . 65  
10.3.4 Internal clock sources and timing characteristics . . . . . . . . . . . . . . . . . 67  
Doc ID 14395 Rev 9  
3/110  
Contents  
STM8AF52/62xx, STM8AF51/61xx  
10.3.5 Memory characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69  
10.3.6 I/O port pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71  
10.3.7 Reset pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75  
10.3.8 TIM 1, 2, 3, and 4 electrical specifications . . . . . . . . . . . . . . . . . . . . . . . 77  
10.3.9 SPI interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78  
2
10.3.10 I C interface characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81  
10.3.11 10-bit ADC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82  
10.3.12 EMC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84  
10.4 Thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87  
10.4.1 Reference document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87  
10.4.2 Selecting the product temperature range . . . . . . . . . . . . . . . . . . . . . . . . 88  
11  
Package characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89  
11.1 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90  
12  
13  
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98  
STM8 development tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99  
13.1 Emulation and in-circuit debugging tools . . . . . . . . . . . . . . . . . . . . . . . . . 99  
13.1.1 STice key features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99  
13.2 Software tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100  
13.2.1 STM8 toolset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100  
13.2.2 C and assembly toolchains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100  
13.3 Programming tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101  
14  
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102  
4/110  
Doc ID 14395 Rev 9  
STM8AF52/62xx, STM8AF51/61xx  
List of tables  
List of tables  
Table 1.  
Table 2.  
Table 3.  
Table 4.  
Table 5.  
Table 6.  
Table 7.  
Table 8.  
Device summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
STM8AF52xx product line-up with CAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
STM8AF62xx product line-up without CAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
STM8AF/H/P51xx product line-up with CAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
STM8AF/H/P61xx product line-up without CAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13  
Peripheral clock gating bits (CLK_PCKENR1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
Peripheral clock gating bits (CLK_PCKENR2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
Advanced control and general purpose timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22  
TIM4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22  
ADC naming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23  
Communication peripheral naming correspondence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23  
Legend/abbreviation for the pin description table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32  
STM8A microcontroller family pin description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33  
Memory model 128K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38  
I/O port hardware register map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39  
General hardware register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40  
CPU/SWIM/debug module/interrupt controller registers. . . . . . . . . . . . . . . . . . . . . . . . . . . 48  
Temporary memory unprotection registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49  
STM8A interrupt table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50  
Option bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51  
Option byte description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53  
Voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57  
Current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58  
Thermal characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58  
Operating lifetime . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58  
General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59  
Operating conditions at power-up/power-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60  
Total current consumption in Run, Wait and Slow mode. General conditions  
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.  
for V apply, T = -40 °C to 150 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61  
DD  
A
Table 29.  
Total current consumption in Halt and Active-halt modes. General conditions for V  
DD  
applied. T = -40 °C to 55 °C unless otherwise stated . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62  
A
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.  
Oscillator current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62  
Programming current consumption. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63  
Typical peripheral current consumption V = 5.0 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63  
DD  
HSE external clock characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65  
HSE oscillator characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66  
HSI oscillator characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67  
LSI oscillator characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68  
Flash program memory/data EEPROM memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69  
Flash program memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69  
Data memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70  
I/O static characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71  
NRST pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75  
TIM 1, 2, 3, and 4 electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77  
SPI characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78  
2
I C characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81  
ADC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82  
ADC accuracy for V  
= 5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83  
DDA  
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List of tables  
STM8AF52/62xx, STM8AF51/61xx  
Table 47.  
Table 48.  
Table 49.  
Table 50.  
Table 51.  
Table 52.  
Table 53.  
Table 54.  
Table 55.  
Table 56.  
EMS data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84  
EMI data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85  
ESD absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85  
Electrical sensitivities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86  
Thermal characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87  
LQFP 80-pin low profile quad flat package mechanical data . . . . . . . . . . . . . . . . . . . . . . . 90  
LQFP 64-pin low profile quad flat package mechanical data . . . . . . . . . . . . . . . . . . . . . . . 91  
LQFP 48-pin low profile quad flat package mechanical data . . . . . . . . . . . . . . . . . . . . . . . 93  
LQFP 32-pin low profile quad flat package mechanical data . . . . . . . . . . . . . . . . . . . . . . . 95  
VFQFPN 32-lead very thin fine pitch quad flat no-lead package  
mechanical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97  
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102  
Table 57.  
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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.  
Figure 10.  
STM8A block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
Flash memory organization of STM8A products. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
LQFP 80-pin pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29  
LQFP 64-pin pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30  
LQFP 48-pin pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31  
LQFP/VFQFPN 32-pin pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32  
Register and memory map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38  
Pin loading conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56  
Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57  
f
versus V  
CPUmax  
DD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59  
Figure 11. External capacitor C  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60  
EXT  
Figure 12. Typ. I  
Figure 13. Typ. I  
Figure 14. Typ. I  
Figure 15. Typ. I  
Figure 16. Typ. I  
Figure 17. Typ. I  
vs. V @f  
= 16 MHz, peripherals = on . . . . . . . . . . . . . . . . . . . . . . 64  
DD(RUN)HSE  
DD(RUN)HSE  
DD(RUN)HSI  
DD(WFI)HSE  
DD(WFI)HSE  
DD  
CPU  
vs. f  
@ V = 5.0 V, peripherals = on . . . . . . . . . . . . . . . . . . . . . . . 64  
CPU  
DD  
vs. V @ f  
= 16 MHz, peripherals = off . . . . . . . . . . . . . . . . . . . . . . 64  
= 16 MHz, peripherals = on . . . . . . . . . . . . . . . . . . . . . . 64  
DD  
CPU  
vs. V @ f  
DD  
CPU  
vs. f  
@ V = 5.0 V, peripherals = on . . . . . . . . . . . . . . . . . . . . . . . . 64  
CPU  
DD  
vs. V @ f = 16 MHz, peripherals = off . . . . . . . . . . . . . . . . . . . . . . 64  
DD(WFI)HSI  
DD  
CPU  
Figure 18. HSE external clock source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65  
Figure 19. HSE oscillator circuit diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66  
Figure 20. Typical HSI frequency vs V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67  
DD  
Figure 21. Typical LSI frequency vs V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68  
DD  
Figure 22. Typical V and V vs V @ four temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72  
IL  
IH  
DD  
Figure 23. Typical pull-up resistance R vs V @ four temperatures . . . . . . . . . . . . . . . . . . . . . . . 72  
PU  
DD  
(1)  
Figure 24. Typical pull-up current I vs V @ four temperatures . . . . . . . . . . . . . . . . . . . . . . . . . 73  
pu  
DD  
Figure 25. Typ. V @ V = 3.3 V (standard ports). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73  
OL  
DD  
Figure 26. Typ. V @ V = 5.0 V (standard ports). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73  
OL  
DD  
Figure 27. Typ. V @ V = 3.3 V (true open drain ports) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73  
OL  
DD  
Figure 28. Typ. V @ V = 5.0 V (true open drain ports) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73  
OL  
DD  
Figure 29. Typ. V @ V = 3.3 V (high sink ports) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74  
OL  
DD  
Figure 30. Typ. V @ V = 5.0 V (high sink ports) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74  
OL  
DD  
Figure 31. Typ. V - V @ V = 3.3 V (standard ports). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74  
DD  
OH  
DD  
Figure 32. Typ. V - V @ V = 5.0 V (standard ports). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74  
DD  
OH  
DD  
Figure 33. Typ. V - V @ V = 3.3 V (high sink ports) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74  
DD  
OH  
DD  
Figure 34. Typ. V - V @ V = 5.0 V (high sink ports) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74  
DD  
OH  
DD  
Figure 35. Typical NRST V and V vs V @ four temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . 75  
IL  
IH  
DD  
Figure 36. Typical NRST pull-up resistance R vs V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76  
PU  
DD  
Figure 37. Typical NRST pull-up current I vs V  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76  
pu  
DD  
Figure 38. Recommended reset pin protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77  
Figure 39. SPI timing diagram in slave mode and with CPHA = 0. . . . . . . . . . . . . . . . . . . . . . . . . . . . 79  
Figure 40. SPI timing diagram in slave mode and with CPHA = 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . 79  
Figure 41. SPI timing diagram - master mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80  
Figure 42. Typical application with ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82  
Figure 43. ADC accuracy characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83  
Figure 44. LQFP 80-pin low profile quad flat package (14 x 14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90  
Figure 45. LQFP 64-pin low profile quad flat package (10 x 10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91  
Figure 46. LQFP 64-pin recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92  
Figure 47. LQFP 48-pin low profile quad flat package (7 x 7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93  
Figure 48. LQFP 48-pin recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94  
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List of figures  
STM8AF52/62xx, STM8AF51/61xx  
Figure 49. LQFP 32-pin low profile quad flat package (7 x 7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95  
Figure 50. LQFP 32-pin recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96  
Figure 51. VFQFPN 32-lead very thin fine pitch quad flat no-lead package (5 x 5). . . . . . . . . . . . . . . 97  
(1)  
Figure 52. Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98  
8/110  
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STM8AF52/62xx, STM8AF51/61xx  
Introduction  
1
Introduction  
This datasheet refers to the STM8AF52xx, STM8AF62xx, STM8AF51xx, and STM8AF61xx  
products with 32 to 128 Kbytes of program memory.  
In the order code, the letter ‘F’ refers to product versions with Flash and data EEPROM, ‘H’  
to product versions with Flash only, and ‘P’ to product versions with FASTROM. The  
identifiers ‘F’, ‘H’, and ‘P’ do not coexist in a given order code.  
The datasheet contains the description of family features, pinout, electrical characteristics,  
mechanical data and ordering information.  
For complete information on the STM8A microcontroller memory, registers and  
peripherals, please refer to STM8S and STM8A microcontroller families reference  
manual (RM0016).  
For information on programming, erasing and protection of the internal Flash memory  
please refer to the STM8S and STM8A Flash programming manual (PM0051).  
For information on the debug and SWIM (single wire interface module) refer to the  
STM8 SWIM communication protocol and debug module user manual (UM0470).  
For information on the STM8 core, please refer to the STM8 CPU programming manual  
(PM0044).  
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Description  
STM8AF52/62xx, STM8AF51/61xx  
2
Description  
The STM8AF52xx, STM8AF62xx, STM8AF51xx, and STM8AF61xx automotive 8-bit  
microcontrollers described in this datasheet offer from 32 Kbytes to 128 Kbytes of non  
volatile memory and integrated true data EEPROM. They are referred to as high density  
STM8A devices in the STM8S and STM8A microcontroller families reference manual  
(RM0016).  
The STM8AF51xx and STM8AF52xx series feature a CAN interface.  
All devices of the STM8A product line provide the following benefits: reduced system cost,  
performance and robustness, short development cycles, and product longevity.  
The system cost is reduced thanks to an integrated true data EEPROM for up to 300 k  
write/erase cycles and a high system integration level with internal clock oscillators,  
watchdog, and brown-out reset.  
Device performance is ensured by 20 MIPS at 24 MHz CPU clock frequency and enhanced  
characteristics which include robust I/O, independent watchdogs (with a separate clock  
source), and a clock security system.  
Short development cycles are guaranteed due to application scalability across a common  
family product architecture with compatible pinout, memory map and and modular  
peripherals. Full documentation is offered with a wide choice of development tools.  
Product longevity is ensured in the STM8A family thanks to their advanced core which is  
made in a state-of-the art technology for automotive applications with 3.3 V to 5.5 V  
operating supply.  
All STM8A and ST7 microcontrollers are supported by the same tools including  
STVD/STVP development environment, the STice emulator and a low-cost, third party in-  
circuit debugging tool.  
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STM8AF52/62xx, STM8AF51/61xx  
Product line-up  
3
Product line-up  
..  
Table 2.  
STM8AF52xx product line-up with CAN  
High  
density  
Flash  
program (bytes)  
memory  
Data  
EEPROM  
(bytes)  
10-bit  
A/D  
chan.  
I/0  
wakeup  
pins  
RAM  
Timers  
(IC/OC/PWM) interfaces  
Serial  
Order code  
Package  
(bytes)  
STM8AF/P52AA  
STM8AF/P528A  
STM8AF/P52A9  
STM8AF/P5289  
STM8AF/P5269  
STM8AF/P52A8  
STM8AF/P5288  
STM8AF/P5268  
128 K  
64 K  
LQFP80  
(14x14)  
68/37  
52/36  
2 K  
128 K  
16  
10  
CAN,  
1x8-bit: TIM4  
LIN(UART)  
3x16-bit: TIM1,  
, SPI,  
LQFP64  
(10x10)  
64 K  
6 K  
32 K  
TIM2, TIM3  
USART,  
1 K  
2 K  
1K  
(9/9/9)  
I²C  
128 K  
64 K  
32 K  
LQFP48  
(7x7)  
38/35  
Table 3.  
STM8AF62xx product line-up without CAN  
High  
density  
Flash  
program (bytes)  
memory  
Data  
EEPROM  
(bytes)  
10-bit  
A/D  
chan.  
I/0  
wakeup  
pins  
RAM  
Timers  
(IC/OC/PWM) interfaces  
Serial  
Order code  
Package  
(bytes)  
STM8AF/P62AA  
STM8AF/P628A  
STM8AF/P62A9  
STM8AF/P6289  
STM8AF/P6269  
STM8AF/P62A8  
STM8AF/P6288  
128 K  
64 K  
LQFP80  
(14x14)  
68/37  
52/36  
38/35  
2 K  
128 K  
64 K  
16  
1x8-bit: TIM4  
LIN(UART),  
3x16-bit: TIM1,  
SPI,  
LQFP64  
(10x10)  
2 K  
1 K  
TIM2, TIM3  
USART, I²C  
(9/9/9)  
32 K  
6 K  
128 K  
LQFP48  
(7x7)  
10  
7
64 K  
LQFP32  
(7x7)  
2 K  
1x8-bit: TIM4  
3x16-bit: TIM1, LIN(UART),  
STM8AF/P6286  
STM8AF/P62A6  
25/23  
TIM2, TIM3  
(8/8/8)  
SPI, I²C  
VFQFPN32  
(5x5)  
128 K  
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Product line-up  
STM8AF52/62xx, STM8AF51/61xx  
.
Table 4.  
STM8AF/H/P51xx product line-up with CAN  
High  
density  
Flash  
program (bytes)  
memory  
Data  
EEPROM  
(bytes)  
10-bit  
A/D  
chan.  
I/0  
wakeup  
pins  
RAM  
Timers  
(IC/OC/PWM) interfaces  
Serial  
Order code  
Package  
(bytes)  
STM8AF/H/P51AA  
STM8AF/H/P519A  
STM8AF/H/P518A  
STM8AF/H/P51A9  
STM8AF/H/P5199  
STM8AF/H/P5189  
STM8AF/H/P5179  
STM8AF/H/P5169  
STM8AF/H/P51A8  
STM8AF/H/P5198  
STM8AF/H/P5188  
STM8AF/H/P5178  
STM8AF/H/P5168  
128 K  
96 K  
LQFP80  
(14x14)  
68/37  
52/36  
64 K  
128 K  
96 K  
64 K  
48 K  
32 K  
128 K  
96 K  
64 K  
48 K  
32 K  
6 K  
2 K  
16  
LQFP64  
(10x10)  
CAN,  
1x8-bit: TIM4  
LIN(UART)  
3x16-bit: TIM1,  
, SPI,  
4 K  
3 K  
2 K  
1.5 K  
1 K  
TIM2, TIM3  
USART,  
(9/9/9)  
I²C  
6 K  
2 K  
LQFP48  
(7x7)  
4 K  
3 K  
2 K  
10  
38/35  
1.5 K  
1K  
12/110  
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STM8AF52/62xx, STM8AF51/61xx  
Product line-up  
²
Table 5.  
STM8AF/H/P61xx product line-up without CAN  
High  
density  
Flash  
program (bytes)  
memory  
Data  
EEPROM A/D  
(bytes)  
10-bit  
I/0  
Serial  
RAM  
Timers  
Order code  
Package  
wakeup  
(IC/OC/PWM) interfaces  
chan.  
pins  
(bytes)  
STM8AF/H/P61AA  
STM8AF/H/P619A  
STM8AF/H/P618A  
STM8AF/H/P61A9  
STM8AF/H/P6199  
STM8AF/H/P6189  
STM8AF/H/P6179  
STM8AF/H/P6169  
STM8AF/H/P61A8  
STM8AF/H/P6198  
STM8AF/H/P6188  
STM8AF/H/P6178  
STM8AF/H/P6186  
128 K  
96 K  
LQFP80  
(14x14)  
68/37  
64 K  
128 K  
96 K  
64 K  
48 K  
32 K  
128 K  
96 K  
64 K  
48 K  
64 K  
6 K  
2 K  
16  
1x8-bit: TIM4  
LQFP64  
(10x10)  
3x16-bit:  
TIM1, TIM2,  
TIM3  
LIN(UART),  
SPI,  
USART, I²C  
4 K  
3 K  
2 K  
52/36  
1.5 K  
1 K  
(9/9/9)  
6 K  
2 K  
LQFP48  
(7x7)  
10  
7
38/35  
25/23  
4 K  
3 K  
4 K  
1.5 K  
1x8-bit: TIM4  
3x16-bit:  
TIM1, TIM2,  
TIM3 (8/8/8)  
LQFP32  
(7x7)/  
LIN(UART),  
SPI, I²C  
STM8AF/H/P6176  
48 K  
3 K  
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Block diagram  
STM8AF52/62xx, STM8AF51/61xx  
4
Block diagram  
Figure 1.  
STM8A block diagram  
Reset block  
Reset  
XTAL 1-24 MHz  
RC int. 16 MHz  
RC int. 128 kHz  
Clock controller  
Detector  
Reset  
POR  
BOR  
Clock to peripherals and core  
Window WDG  
IWDG  
STM8A CORE  
Single wire  
debug interf.  
Up to 128 Kbyte  
high density program  
Flash  
Debug/SWIM  
LINUART  
Master/slave  
automatic  
resynchronization  
Up to 2 Kbytes  
data EEPROM  
400 Kbit/s  
10 Mbit/s  
2
Up to 6 Kbytes  
RAM  
I C  
Boot ROM  
SPI  
16-bit advanced control  
LIN master  
SPI emul.  
timer (TIM1)  
USART  
beCAN  
Up to  
9 CAPCOM  
channels  
16-bit general purpose  
(TIM2, TIM3)  
1 Mbit/s  
8-bit AR timer  
(TIM4)  
Up to  
16 channels  
10-bit ADC  
AWU timer  
1. Legend:  
ADC: Analog-to-digital converter  
beCAN: Controller area network  
BOR: Brownout reset  
I²C: Inter-integrated circuit multimaster interface  
IWDG: Independent window watchdog  
LINUART: Local interconnect network universal asynchronous receiver transmitter  
POR: Power on reset  
SPI: Serial peripheral interface  
SWIM: Single wire interface module  
USART: Universal synchronous asynchronous receiver transmitter  
Window WDG: Window watchdog  
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STM8AF52/62xx, STM8AF51/61xx  
Product overview  
5
Product overview  
This section is intended to describe the family features that are actually implemented in the  
products covered by this datasheet.  
For more detailed information on each feature please refer to the STM8S and STM8A  
microcontroller families reference manual (RM0016).  
5.1  
STM8A central processing unit (CPU)  
The 8-bit STM8A core is a modern CISC core and has been designed for code efficiency  
and performance. It contains 21 internal registers (six directly addressable in each execution  
context), 20 addressing modes including indexed indirect and relative addressing and 80  
instructions.  
5.1.1  
Architecture and registers  
Harvard architecture  
3-stage pipeline  
32-bit wide program memory bus with single cycle fetching for most instructions  
X and Y 16-bit index registers, enabling indexed addressing modes with or without  
offset and read-modify-write type data manipulations  
8-bit accumulator  
24-bit program counter with 16-Mbyte linear memory space  
16-bit stack pointer with access to a 64 Kbyte stack  
8-bit condition code register with seven condition flags for the result of the last  
instruction.  
5.1.2  
5.1.3  
Addressing  
20 addressing modes  
Indexed indirect addressing mode for look-up tables located anywhere in the address  
space  
Stack pointer relative addressing mode for efficient implementation of local variables  
and parameter passing  
Instruction set  
80 instructions with 2-byte average instruction size  
Standard data movement and logic/arithmetic functions  
8-bit by 8-bit multiplication  
16-bit by 8-bit and 16-bit by 16-bit division  
Bit manipulation  
Data transfer between stack and accumulator (push/pop) with direct stack access  
Data transfer using the X and Y registers or direct memory-to-memory transfers  
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Product overview  
STM8AF52/62xx, STM8AF51/61xx  
5.2  
Single wire interface module (SWIM) and debug module (DM)  
5.2.1  
SWIM  
The single wire interface module, SWIM, together with an integrated debug module, permits  
non-intrusive, real-time in-circuit debugging and fast memory programming. The interface  
can be activated in all device operation modes and can be connected to a running device  
(hot plugging).The maximum data transmission speed is 145 bytes/ms.  
5.2.2  
Debug module  
The non-intrusive debugging module features a performance close to a full-flavored  
emulator. Besides memory and peripheral operation, CPU operation can also be monitored  
in real-time by means of shadow registers.  
R/W of RAM and peripheral registers in real-time  
R/W for all resources when the application is stopped  
Breakpoints on all program-memory instructions (software breakpoints), except the  
interrupt vector table  
Two advanced breakpoints and 23 predefined breakpoint configurations  
5.3  
5.4  
Interrupt controller  
Nested interrupts with three software priority levels  
24 interrupt vectors with hardware priority  
Five vectors for external interrupts (up to 37 depending on the package)  
Trap and reset interrupts  
Flash program and data EEPROM  
32 Kbytes to 128 Kbytes of high density single voltage Flash program memory  
Up to 2 Kbytes true (not emulated) data EEPROM  
Read while write: writing in the data memory is possible while executing code in the  
Flash program memory.  
The whole Flash program memory and data EEPROM are factory programmed with 0x00.  
5.4.1  
Architecture  
The memory is organized in blocks of 128 bytes each  
Read granularity: 1 word = 4 bytes  
Write/erase granularity: 1 word (4 bytes) or 1 block (128 bytes) in parallel  
Writing, erasing, word and block management is handled automatically by the memory  
interface.  
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STM8AF52/62xx, STM8AF51/61xx  
Product overview  
5.4.2  
Write protection (WP)  
Write protection in application mode is intended to avoid unintentional overwriting of the  
memory. The write protection can be removed temporarily by executing a specific sequence  
in the user software.  
5.4.3  
Protection of user boot code (UBC)  
If the user chooses to update the Flash program memory using a specific boot code to  
perform in application programming (IAP), this boot code needs to be protected against  
unwanted modification.  
In the STM8A a memory area of up to 128 Kbytes can be protected from overwriting at user  
option level. Other than the standard write protection, the UBC protection can exclusively be  
modified via the debug interface, the user software cannot modify the UBC protection status.  
The UBC memory area contains the reset and interrupt vectors and its size can be adjusted  
in increments of 512 bytes by programming the UBC and NUBC option bytes  
(see Section 9: Option bytes on page 51).  
Figure 2.  
Flash memory organization of STM8A products  
Data memory area  
Option bytes  
Data  
EEPROM  
memory  
Programmable area from 1 Kbyte  
(first two pages) up to program memory  
end - maximum 128 Kbytes  
UBC area  
Remains write protected during IAP  
Flash  
program  
memory  
Program memory area  
Write access possible for IAP  
5.4.4  
Read-out protection (ROP)  
The STM8A provides a read-out protection of the code and data memory which can be  
activated by an option byte setting (see the ROP option byte in section 10).  
The read-out protection prevents reading and writing Flash program memory, data memory  
and option bytes via the debug module and SWIM interface. This protection is active in all  
device operation modes. Any attempt to remove the protection by overwriting the ROP  
option byte triggers a global erase of the program and data memory.  
The ROP circuit may provide a temporary access for debugging or failure analysis. The  
temporary read access is protected by a user defined, 8-byte keyword stored in the option  
byte area. This keyword must be entered via the SWIM interface to temporarily unlock the  
device.  
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Product overview  
STM8AF52/62xx, STM8AF51/61xx  
If desired, the temporary unlock mechanism can be permanently disabled by the user  
through OPT6/NOPT6 option bytes.  
5.5  
Clock controller  
The clock controller distributes the system clock coming from different oscillators to the core  
and the peripherals. It also manages clock gating for low-power modes and ensures clock  
robustness.  
5.5.1  
Features  
Clock sources  
16 MHz high-speed internal RC oscillator (HSI)  
128 kHz low-speed internal RC (LSI)  
1-24 MHz high-speed external crystal (HSE)  
Up to 24 MHz high-speed user-external clock (HSE user-ext)  
Reset: After reset the microcontroller restarts by default with an internal 2-MHz clock  
(16 MHz/8). The clock source and speed can be changed by the application program  
as soon as the code execution starts.  
Safe clock switching: Clock sources can be changed safely on the fly in Run mode  
through a configuration register. The clock signal is not switched until the new clock  
source is ready. The design guarantees glitch-free switching.  
Clock management: To reduce power consumption, the clock controller can stop the  
clock to the core, individual peripherals or memory.  
Wakeup: In case the device wakes up from low-power modes, the internal RC  
oscillator (16 MHz/8) is used for quick startup. After a stabilization time, the device  
switches to the clock source that was selected before Halt mode was entered.  
Clock security system (CSS): The CSS permits monitoring of external clock sources  
and automatic switching to the internal RC (16 MHz/8) in case of a clock failure.  
Configurable main clock output (CCO): This feature permits to outputs a clock signal  
for use by the application.  
5.5.2  
16 MHz high-speed internal RC oscillator (HSI)  
Default clock after reset 2 MHz (16 MHz/8)  
Fast wakeup time  
User trimming  
The register CLK_HSITRIMR with two trimming bits plus one additional bit for the sign  
permits frequency tuning by the application program. The adjustment range covers all  
possible frequency variations versus supply voltage and temperature. This trimming does  
not change the initial production setting.  
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STM8AF52/62xx, STM8AF51/61xx  
Product overview  
5.5.3  
128 kHz low-speed internal RC oscillator (LSI)  
The frequency of this clock is 128 kHz and it is independent from the main clock. It drives  
the independent watchdog or the AWU wakeup timer.  
In systems which do not need independent clock sources for the watchdog counters, the  
128 kHz signal can be used as the system clock. This configuration has to be enabled by  
setting an option byte (OPT3/OPT3N, bit LSI_EN).  
5.5.4  
24 MHz high-speed external crystal oscillator (HSE)  
The external high-speed crystal oscillator can be selected to deliver the main clock in  
normal Run mode. It operates with quartz crystals and ceramic resonators.  
Frequency range: 1 MHz to 24 MHz  
Crystal oscillation mode: preferred fundamental  
I/Os: standard I/O pins multiplexed with OSCIN, OSCOUT  
5.5.5  
5.5.6  
External clock input  
An external clock signal can be applied to the OSCIN input pin of the crystal oscillator. The  
frequency range is 0 to 24 MHz.  
Clock security system (CSS)  
The clock security system protects against a system stall in case of an external crystal clock  
failure.  
In case of a clock failure an interrupt is generated and the high-speed internal clock (HSI) is  
automatically selected with a frequency of 2 MHz (16 MHz/8).  
Table 6.  
Peripheral clock gating bits (CLK_PCKENR1)  
Control bit  
Peripheral  
PCKEN17  
PCKEN16  
PCKEN15  
PCKEN14  
PCKEN13  
PCKEN12  
PCKEN11  
PCKEN10  
TIM1  
TIM3  
TIM2  
TIM4  
LINUART  
USART  
SPI  
I2C  
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Product overview  
STM8AF52/62xx, STM8AF51/61xx  
Table 7.  
Peripheral clock gating bits (CLK_PCKENR2)  
Control bit  
Peripheral  
PCKEN27  
PCKEN26  
PCKEN25  
PCKEN24  
PCKEN23  
PCKEN22  
PCKEN21  
PCKEN20  
CAN  
Reserved  
Reserved  
Reserved  
ADC  
AWU  
Reserved  
Reserved  
5.6  
Low-power operating modes  
For efficient power management, the application can be put in one of four different low-  
power modes. You can configure each mode to obtain the best compromise between lowest  
power consumption, fastest start-up time and available wakeup sources.  
Wait mode  
In this mode, the CPU is stopped but peripherals are kept running. The wakeup is  
performed by an internal or external interrupt or reset.  
Active-halt mode with regulator on  
In this mode, the CPU and peripheral clocks are stopped. An internal wakeup is  
generated at programmable intervals by the auto wake up unit (AWU). The main  
voltage regulator is kept powered on, so current consumption is higher than in Active-  
halt mode with regulator off, but the wakeup time is faster. Wakeup is triggered by the  
internal AWU interrupt, external interrupt or reset.  
Active-halt mode with regulator off  
This mode is the same as Active-halt with regulator on, except that the main voltage  
regulator is powered off, so the wake up time is slower.  
Halt mode  
CPU and peripheral clocks are stopped, the main voltage regulator is powered off.  
Wakeup is triggered by external event or reset.  
In all modes the CPU and peripherals remain permanently powered on, the system clock is  
applied only to selected modules. The RAM content is preserved and the brown-out reset  
circuit remains activated.  
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STM8AF52/62xx, STM8AF51/61xx  
Product overview  
5.7  
Timers  
5.7.1  
Watchdog timers  
The watchdog system is based on two independent timers providing maximum security to  
the applications. The watchdog timer activity is controlled by the application program or  
option bytes. Once the watchdog is activated, it cannot be disabled by the user program  
without going through reset.  
Window watchdog timer  
The window watchdog is used to detect the occurrence of a software fault, usually  
generated by external interferences or by unexpected logical conditions, which cause the  
application program to abandon its normal sequence.  
The window function can be used to trim the watchdog behavior to match the application  
timing perfectly. The application software must refresh the counter before time-out and  
during a limited time window. If the counter is refreshed outside this time window, a reset is  
issued.  
Independent watchdog timer  
The independent watchdog peripheral can be used to resolve malfunctions due to hardware  
or software failures.  
It is clocked by the 128 kHz LSI internal RC clock source, and thus stays active even in case  
of a CPU clock failure. If the hardware watchdog feature is enabled through the device  
option bits, the watchdog is automatically enabled at power-on, and generates a reset  
unless the key register is written by software before the counter reaches the end of count.  
5.7.2  
Auto-wakeup counter  
This counter is used to cyclically wakeup the device in Active-halt mode. It can be clocked by  
the internal 128 kHz internal low-frequency RC oscillator or external clock.  
LSI clock can be internally connected to TIM3 input capture channel 1 for calibration.  
5.7.3  
5.7.4  
Beeper  
This function generates a rectangular signal in the range of 1, 2 or 4 kHz which can be  
output on a pin. This is useful when audible sounds without interference need to be  
generated for use in the application.  
Advanced control and general purpose timers  
STM8A devices described in this datasheet, contain up to three 16-bit advanced control and  
general purpose timers providing nine CAPCOM channels in total. A CAPCOM channel can  
be used either as input compare, output compare or PWM channel. These timers are  
named TIM1, TIM2 and TIM3.  
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Product overview  
STM8AF52/62xx, STM8AF51/61xx  
Table 8.  
Timer  
Advanced control and general purpose timers  
Counter Counter Prescaler  
Inverted Repetition trigger External Break  
Channels  
width  
type  
factor  
outputs  
counter  
unit  
trigger  
input  
TIM1  
TIM2  
16-bit  
Up/down 1 to 65536  
4
3
3
Yes  
Yes  
Yes  
Yes  
2n  
16-bit  
16-bit  
Up  
None  
None  
No  
No  
No  
No  
No  
No  
No  
No  
n = 0 to 15  
2n  
TIM3  
Up  
2
n = 0 to 15  
TIM1 - advanced control timer  
This is a high-end timer designed for a wide range of control applications. With its  
complementary outputs, dead-time control and center-aligned PWM capability, the field of  
applications is extended to motor control, lighting and bridge driver.  
16-bit up, down and up/down AR (auto-reload) counter with 16-bit fractional prescaler.  
Four independent CAPCOM channels configurable as input capture, output compare,  
PWM generation (edge and center aligned mode) and single pulse mode output  
Trigger module which allows the interaction of TIM1 with other on-chip peripherals. In  
the present implementation it is possible to trigger the ADC upon a timer event.  
External trigger to change the timer behavior depending on external signals  
Break input to force the timer outputs into a defined state  
Three complementary outputs with adjustable dead time  
Interrupt sources: 4 x input capture/output compare, 1 x overflow/update, 1 x break  
TIM2, TIM3 - 16-bit general purpose timers  
16-bit auto-reload up-counter  
15-bit prescaler adjustable to fixed power of two ratios 1…32768  
Timers with three or two individually configurable CAPCOM channels  
Interrupt sources: 2 or 3 x input capture/output compare, 1 x overflow/update  
5.7.5  
Basic timer  
The typical usage of this timer (TIM4) is the generation of a clock tick.  
Table 9.  
Timer  
TIM4  
Counter Counter Prescaler  
width  
Inverted Repetition trigger External Break  
Channels  
type  
factor  
outputs  
counter  
unit  
trigger  
input  
2n  
TIM4  
8-bit  
Up  
0
None  
No  
No  
No  
No  
n = 0 to 7  
8-bit auto-reload, adjustable prescaler ratio to any power of two from 1 to 128  
Clock source: master clock  
Interrupt source: 1 x overflow/update  
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Product overview  
5.8  
Analog to digital converter (ADC)  
The STM8A products described in this datasheet contain a 10-bit successive approximation  
ADC with up to 16 multiplexed input channels, depending on the package.  
The ADC name differs between the datasheet and the STM8A/S reference manual (see  
Table 10).  
Table 10. ADC naming  
Peripheral name in reference manual  
Peripheral name in datasheet  
(RM0016)  
ADC  
ADC2  
ADC features  
10-bit resolution  
Single and continuous conversion modes  
Programmable prescaler: f  
divided by 2 to 18  
MASTER  
Conversion trigger on timer events, and external events  
Interrupt generation at end of conversion  
Selectable alignment of 10-bit data in 2 x 8 bit result registers  
Shadow registers for data consistency  
ADC input range: V  
V V  
IN DDA  
SSA  
Schmitt-trigger on analog inputs can be disabled to reduce power consumption  
5.9  
Communication interfaces  
The following sections give a brief overview of the communication peripheral. Some  
peripheral names differ between the datasheet and the STM8A/S reference manual (see  
Table 11).  
Table 11. Communication peripheral naming correspondence  
Peripheral name in reference manual  
Peripheral name in datasheet  
(RM0016)  
USART  
UART1  
UART3  
LINUART  
5.9.1  
Universal synchronous/asynchronous receiver transmitter (USART)  
The devices covered by this datasheet contain one USART interface. The USART can  
operate in standard SCI mode (serial communication interface, asynchronous) or in SPI  
emulation mode. It is equipped with a 16 bit fractional prescaler. It features LIN master  
support.  
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Product overview  
Detailed feature list:  
STM8AF52/62xx, STM8AF51/61xx  
Full duplex, asynchronous communications  
NRZ standard format (mark/space)  
High-precision baud rate generator system  
Common programmable transmit and receive baud rates up to f  
/16  
MASTER  
Programmable data word length (8 or 9 bits)  
Configurable stop bits: Support for 1 or 2 stop bits  
LIN master mode:  
LIN break and delimiter generation  
LIN break and delimiter detection with separate flag and interrupt source for  
readback checking.  
Transmitter clock output for synchronous communication  
Separate enable bits for transmitter and receiver  
Transfer detection flags:  
Receive buffer full  
Transmit buffer empty  
End of transmission flags  
Parity control:  
Transmits parity bit  
Checks parity of received data byte  
Four error detection flags:  
Overrun error  
Noise error  
Frame error  
Parity error  
Six interrupt sources with flags:  
Transmit data register empty  
Transmission complete  
Receive data register full  
Idle line received  
Parity error  
LIN break and delimiter detection  
Two interrupt vectors:  
Transmitter interrupt  
Receiver interrupt  
Reduced power consumption mode  
Wakeup from mute mode (by idle line detection or address mark detection)  
Two receiver wakeup modes:  
Address bit (MSB)  
Idle line  
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Product overview  
5.9.2  
Universal asynchronous receiver/transmitter with LIN support  
(LINUART)  
The devices covered by this datasheet contain one LINUART interface. The interface is  
available on all the supported packages. The LINUART is an asynchronous serial  
communication interface which supports extensive LIN functions tailored for LIN slave  
applications. In LIN mode it is compliant to the LIN standards rev 1.2 to rev 2.1.  
Detailed feature list:  
LIN mode  
Master mode  
LIN break and delimiter generation  
LIN break and delimiter detection with separate flag and interrupt source for read back  
checking.  
Slave mode  
Autonomous header handling – one single interrupt per valid header  
Mute mode to filter responses  
Identifier parity error checking  
LIN automatic resynchronization, allowing operation with internal RC oscillator (HSI)  
clock source  
Break detection at any time, even during a byte reception  
Header errors detection:  
Delimiter too short  
Synch field error  
Deviation error (if automatic resynchronization is enabled)  
Framing error in synch field or identifier field  
Header time-out  
UART mode  
Full duplex, asynchronous communications - NRZ standard format (mark/space)  
High-precision baud rate generator  
A common programmable transmit and receive baud rates up to f  
/16  
MASTER  
Programmable data word length (8 or 9 bits) – 1 or 2 stop bits – parity control  
Separate enable bits for transmitter and receiver  
Error detection flags  
Reduced power consumption mode  
Multi-processor communication - enter mute mode if address match does not occur  
Wakeup from mute mode (by idle line detection or address mark detection)  
Two receiver wakeup modes:  
Address bit (MSB)  
Idle line  
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Product overview  
STM8AF52/62xx, STM8AF51/61xx  
5.9.3  
Serial peripheral interface (SPI)  
The devices covered by this datasheet contain one SPI. The SPI is available on all the  
supported packages.  
Maximum speed: 8 Mbit/s or f  
/2 both for master and slave  
MASTER  
Full duplex synchronous transfers  
Simplex synchronous transfers on two lines with a possible bidirectional data line  
Master or slave operation - selectable by hardware or software  
CRC calculation  
1 byte Tx and Rx buffer  
Slave mode/master mode management by hardware or software for both master and  
slave  
Programmable clock polarity and phase  
Programmable data order with MSB-first or LSB-first shifting  
Dedicated transmission and reception flags with interrupt capability  
SPI bus busy status flag  
Hardware CRC feature for reliable communication:  
CRC value can be transmitted as last byte in Tx mode  
CRC error checking for last received byte  
2
5.9.4  
Inter integrated circuit (I C) interface  
2
The devices covered by this datasheet contain one I C interface. The interface is available  
on all the supported packages.  
2
I C master features:  
Clock generation  
Start and stop generation  
2
I C slave features:  
2
Programmable I C address detection  
Stop bit detection  
Generation and detection of 7-bit/10-bit addressing and general call  
Supports different communication speeds:  
Standard speed (up to 100 kHz),  
Fast speed (up to 400 kHz)  
Status flags:  
Transmitter/receiver mode flag  
End-of-byte transmission flag  
2
I C busy flag  
Error flags:  
Arbitration lost condition for master mode  
Acknowledgement failure after address/data transmission  
Detection of misplaced start or stop condition  
Overrun/underrun if clock stretching is disabled  
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Product overview  
Interrupt:  
Successful address/data communication  
Error condition  
Wakeup from Halt  
Wakeup from Halt on address detection in slave mode  
5.9.5  
Controller area network interface (beCAN)  
The beCAN controller (basic enhanced CAN), interfaces the CAN network and supports the  
CAN protocol version 2.0A and B. It is equipped with a receive FIFO and a very versatile  
filter bank. Together with a filter match index, this allows a very efficient message handling in  
today’s car network architectures. The CPU is significantly unloaded. The maximum  
transmission speed is 1 Mbit/s.  
Transmission  
Three transmit mailboxes  
Configurable transmit priority by identifier or order request  
Reception  
11- and 29-bit ID  
1 receive FIFO (3 messages deep)  
Software-efficient mailbox mapping at a unique address space  
FMI (filter match index) stored with message for quick message association  
Configurable FIFO overrun  
Time stamp on SOF reception  
6 filter banks, 2 x 32 bytes (scalable to 4 x 16-bit) each, enabling various masking  
configurations, such as 12 filters for 29-bit ID or 48 filters for 11-bit ID.  
Filtering modes (mixable):  
Mask mode permitting ID range filtering  
ID list mode  
Interrupt management  
Maskable interrupt  
Software-efficient mailbox mapping at a unique address space  
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Product overview  
STM8AF52/62xx, STM8AF51/61xx  
5.10  
Input/output specifications  
The product features four I/O types:  
Standard I/O 2 MHz  
Fast I/O up to 10 MHz  
High sink 8 mA, 2 MHz  
2
True open drain (I C interface)  
To decrease EMI (electromagnetic interference), high sink I/Os have a limited maximum  
slew rate. The rise and fall times are similar to those of standard I/Os.  
The analog inputs are equipped with a low leakage analog switch. Additionally, the schmitt-  
trigger input stage on the analog I/Os can be disabled in order to reduce the device standby  
consumption.  
STM8A I/Os are designed to withstand current injection. For a negative injection current of  
4 mA, the resulting leakage current in the adjacent input does not exceed 1 µA. Thanks to  
this feature, external protection diodes against current injection are no longer required.  
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STM8AF52/62xx, STM8AF51/61xx  
Pinouts and pin description  
6
Pinouts and pin description  
6.1  
Package pinouts  
Figure 3.  
LQFP 80-pin pinout  
60  
59  
58  
57  
56  
55  
54  
53  
52  
51  
50  
49  
48  
47  
46  
45  
44  
43  
42  
41  
1
2
3
4
5
6
7
8
NRST  
OSCIN/PA1  
OSCOUT/PA2  
PI3  
PI2  
PI1  
PI0  
V
SSIO_1  
V
PG4  
PG3  
PG2  
PG1/CAN_RX  
PG0/CAN_TX  
PC7/SPI_MISO  
PC6/SPI_MOSI  
SS  
VCAP  
V
DD  
(1)  
V
DDIO_1  
(1)  
9
TIM2_CH3/PA3  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
USART_RX/PA4  
USART_TX/PA5  
USART_CK/PA6  
(HS) PH0  
V
V
DDIO_2  
SSIO_2  
(HS) PH1  
PC5/SPI_SCK  
PH2  
PH3  
AIN15/PF7  
AIN14/PF6  
AIN13/PF5  
AIN12/PF4  
PC4 (HS)/TIM1_CH4  
PC3 (HS)/TIM1_CH3  
PC2 (HS)/TIM1_CH2  
PC1 (HS)/TIM1_CH1  
PC0/ADC_ETR  
PE5/SPI_NSS  
1. The CAN interface is only available on the STM8AF/H/P51xx and STM8AF52xx product lines.  
2. (HS) stands for high sink capability.  
Doc ID 14395 Rev 9  
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Pinouts and pin description  
Figure 4. LQFP 64-pin pinout  
STM8AF52/62xx, STM8AF51/61xx  
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49  
PI0  
PG4  
PG3  
PG2  
PG1/CAN_RX  
PG0/CAN_TX  
PC7/SPI_MISO  
PC6/SPI_MOSI  
48  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
36  
35  
34  
33  
NRST  
OSCIN/PA1  
OSCOUT/PA2  
1
2
3
4
5
6
7
8
9
V
SSIO_1  
(1)  
V
SS  
(1)  
VCAP  
V
DD  
V
DDIO_1  
V
TIM2_CH3/PA3  
USART_RX/PA4  
USART_TX/PA5  
USART_CK/PA6  
DDIO_2  
V
10  
11  
12  
SSIO_2  
PC5/SPI_SCK  
PC4 (HS)/TIM1_CH4  
PC3 (HS)/TIM1_CH3  
PC2 (HS)/TIM1_CH2  
PC1 (HS)/TIM1_CH1  
PE5/SPI_NSS  
AIN15/PF7 13  
AIN14/PF6  
14  
AIN13/PF5 15  
AIN12/PF4 16  
1718 1920212223242526272829303132  
1. The CAN interface is only available on the STM8AF/H/P51xx and STM8AF52xx product lines.  
2. HS stands for high sink capability.  
30/110  
Doc ID 14395 Rev 9  
 
STM8AF52/62xx, STM8AF51/61xx  
Figure 5. LQFP 48-pin pinout  
Pinouts and pin description  
48 47 46 45 4443424140393837  
36  
NRST  
OSCIN/PA1  
PG1/CAN_Rx  
PG0/CAN_Tx  
35  
1
2
OSCOUT/PA2  
3
4
34 PC7/SPI_MISO  
33 PC6/SPI_MOSI  
V
SSIO_1  
V
32  
31  
30  
29  
28  
27  
26  
25  
5
6
7
8
9
10  
11  
V
V
SS  
DDIO_2  
VCAP  
SSIO_2  
V
PC5/SPI_SCK  
DD  
V
PC4 (HS)/TIM1_CH4  
PC3 (HS)/TIM1_CH3  
PC2 (HS)/TIM1_CH2  
PC1 (HS)/TIM1_CH1  
PE5/SPI_NSS  
DDIO_1  
TIM2_CH3/PA3  
USART_RX/PA4  
USART_TX/PA5  
USART_CK/PA6  
12  
24  
1314 15161718192021 2223  
1. The CAN interface is only available on the STM8AF/H/P51xx and STM8AF52xx product lines.  
2. HS stands for high sink capability.  
Doc ID 14395 Rev 9  
31/110  
 
Pinouts and pin description  
Figure 6. LQFP/VFQFPN 32-pin pinout  
STM8AF52/62xx, STM8AF51/61xx  
32 31 30 29 28 27 26 25  
24  
NRST  
OSCIN/PA1  
OSCOUT/PA2  
1
2
3
4
5
6
7
8
PC7/SPI_MISO  
PC6/SPI_MOSI  
PC5/SPI_SCK  
PC4 (HS)/TIM1_CH4  
PC3 (HS)/TIM1_CH3  
PC2 (HS)/TIM1_CH2  
PC1 (HS)/TIM1_CH1  
PE5/SPI_NSS  
23  
22  
21  
20  
19  
18  
17  
V
SS  
VCAP  
V
DD  
V
DDIO  
AIN12/PF4  
9 101112 13141516  
1. HS stands for high sink capability.  
Table 12. Legend/abbreviation for the pin description table  
Type  
I= input, O = output, S = power supply  
Input  
CM = CMOS (standard for all I/Os)  
HS = high sink (8 mA)  
Level  
Output  
O1 = Standard (up to 2 MHz)  
O2 = Fast (up to 10 MHz)  
O3 = Fast/slow programmability with slow as default state after reset  
O4 = Fast/slow programmability with fast as default state after reset  
Output speed  
Input  
float = floating, wpu = weak pull-up  
Port and control  
configuration  
Output  
T = true open drain, OD = open drain, PP = push pull  
Bold X (pin state after reset release).  
Reset state  
Unless otherwise specified, the pin state is the same during the reset phase (i.e.  
“under reset”) and after internal reset release (i.e. at reset state).  
32/110  
Doc ID 14395 Rev 9  
 
 
STM8AF52/62xx, STM8AF51/61xx  
Pinouts and pin description  
Table 13. STM8A microcontroller family pin description  
Pin number  
Input  
Output  
Main  
function  
(after  
Alternate  
function  
after remap  
[option bit]  
Default  
alternate  
function  
Pin name  
reset)  
1
2
1
2
1
2
1
2
NRST  
I/O  
-
X
X
X
Reset  
Resonator/  
crystal in  
PA1/OSCIN(1) I/O  
X
X
O1  
Port A1  
Port A2  
Resonator/  
crystal out  
3
3
3
3
PA2/OSCOUT I/O  
X
X
X
O1  
X
X
4
5
6
7
8
4
5
6
7
8
4
5
6
7
8
-
VSSIO_1  
VSS  
S
S
S
S
S
I/O ground  
Digital ground  
4
5
6
7
VCAP  
VDD  
— 1.8 V regulator capacitor  
Digital power supply  
I/O power supply  
VDDIO_1  
Timer 2 -  
Port A3  
TIM3_CH1  
[AFR1]  
9
9
9
-
-
-
PA3/TIM2_CH3 I/O  
PA4/USART_RX I/O  
PA5/USART_TX I/O  
X
X
X
X
X
X
X
X
X
O1  
O3  
O3  
X
X
X
X
X
X
channel 3  
USART  
Port A4  
10 10 10  
11 11 11  
receive  
USART  
Port A5  
transmit  
USART  
Port A6 synchronous  
clock  
12 12 12  
-
PA6/USART_CK I/O  
X
X
X
O3  
X
X
13  
14  
15  
16  
-
-
-
-
-
-
-
-
-
-
-
-
PH0  
PH1  
PH2  
PH3  
I/O  
I/O  
I/O  
I/O  
X
X
X
X
X
X
X
X
HS O3  
HS O3  
X
X
X
X
X
X
X
X
Port H0  
Port H1  
Port H2  
Port H3  
O1  
O1  
Analog  
input 15  
17 13  
18 14  
19 15  
20 16  
21 17  
-
-
-
-
-
-
-
PF7/AIN15  
PF6/AIN14  
PF5/AIN13  
PF4/AIN12  
PF3/AIN11  
I/O  
I/O  
I/O  
I/O  
I/O  
X
X
X
X
X
X
X
X
X
X
O1  
O1  
O1  
O1  
O1  
X
X
X
X
X
X
X
X
X
X
Port F7  
Port F6  
Port F5  
Port F4  
Port F3  
Analog  
input 14  
Analog  
input 13  
-
Analog  
input 12  
8
-
Analog  
input 11  
Doc ID 14395 Rev 9  
33/110  
 
Pinouts and pin description  
STM8AF52/62xx, STM8AF51/61xx  
Table 13. STM8A microcontroller family pin description (continued)  
Pin number  
Input  
Output  
Main  
function  
(after  
Alternate  
function  
after remap  
[option bit]  
Default  
alternate  
function  
Pin name  
reset)  
ADC positive reference  
voltage  
22 18  
-
-
VREF+  
S
23 19 13  
9
VDDA  
VSSA  
S
S
Analog power supply  
Analog ground  
24 20 14 10  
ADC negative reference  
voltage  
25 21  
26 22  
-
-
-
-
-
-
VREF-  
S
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Analog  
Port F0  
PF0/AIN10  
PB7/AIN7  
PB6/AIN6  
PB5/AIN5  
PB4/AIN4  
PB3/AIN3  
PB2/AIN2  
PB1/AIN1  
PB0/AIN0  
I/O  
I/O  
I/O  
I/O  
I/O  
I/O  
I/O  
I/O  
I/O  
O1  
O1  
O1  
O1  
O1  
O1  
O1  
O1  
O1  
O1  
input 10  
Analog input  
27 23 15  
28 24 16  
Port B7  
7
Analog input  
X
Port B6  
6
Analog input  
I2C_SDA  
[AFR6]  
29 25 17 11  
30 26 18 12  
31 27 19 13  
32 28 20 14  
33 29 21 15  
34 30 22 16  
X
Port B5  
5
Analog input  
I2C_SCL  
[AFR6]  
X
Port B4  
4
Analog input TIM1_ETR  
X
Port B3  
Port B2 Analog input  
3
[AFR5]  
TIM1_CH3N  
[AFR5]  
X
Analog input TIM1_CH2N  
[AFR5]  
X
Port B1  
Port B0  
Port H4  
1
Analog input TIM1_CH1N  
X
0
[AFR5]  
Timer 1 -  
trigger input  
35  
36  
-
-
-
-
-
-
PH4/TIM1_ETR I/O  
Timer 1 -  
inverted  
channel 3  
PH5/  
I/O  
X
X
X
X
X
X
O1  
O1  
O1  
X
X
X
X
X
X
Port H5  
Port H6  
Port H7  
TIM1_CH3N  
Timer 1 -  
inverted  
channel 2  
PH6/  
I/O  
37  
38  
-
-
-
-
-
-
TIM1_CH2N  
Timer 1 -  
inverted  
PH7/  
I/O  
TIM1_CH1N  
channel 2  
34/110  
Doc ID 14395 Rev 9  
STM8AF52/62xx, STM8AF51/61xx  
Pinouts and pin description  
Table 13. STM8A microcontroller family pin description (continued)  
Pin number  
Input  
Output  
Main  
function  
(after  
Alternate  
function  
after remap  
[option bit]  
Default  
alternate  
function  
Pin name  
reset)  
Analog input  
8
39 31 23  
40 32 24  
-
PE7/AIN8  
PE6/AIN9  
I/O  
I/O  
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
O1  
O1  
O1  
O1  
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Port E7  
Port E7  
Port E5  
Port C0  
Port C1  
Port C2  
Port C3  
Analog input  
9
SPI master/  
slave select  
41 33 25 17 PE5/SPI_NSS I/O  
42 PC0/ADC_ETR I/O  
ADC trigger  
input  
-
-
-
Timer 1 -  
channel 1  
43 34 26 18 PC1/TIM1_CH1 I/O  
44 35 27 19 PC2/TIM1_CH2 I/O  
45 36 28 20 PC3/TIM1_CH3 I/O  
HS O3  
HS O3  
HS O3  
HS O3  
Timer 1-  
channel 2  
Timer 1 -  
channel 3  
Timer 1 -  
channel 4  
46 37 29 21 PC4/TIM1_CH4 I/O  
47 38 30 22 PC5/SPI_SCK I/O  
Port C4  
Port C5  
X
X
X
O3  
X
X
SPI clock  
48 39 31  
49 40 32  
-
-
VSSIO_2  
VDDIO_2  
S
S
I/O ground  
I/O power supply  
SPI master  
50 41 33 23 PC6/SPI_MOSI I/O  
51 42 34 24 PC7/SPI_MISO I/O  
X
X
X
X
X
X
O3  
O3  
X
X
X
X
Port C6  
out/  
slave in  
SPI master  
in/ slave out  
Port C7  
52 43 35  
53 44 36  
-
-
-
-
-
-
-
-
-
PG0/CAN_Tx I/O  
PG1/CAN_Rx I/O  
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
O1  
O1  
O1  
O1  
O1  
O1  
O1  
O1  
O1  
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Port G0 CAN transmit  
Port G1 CAN receive  
54 45  
55 46  
56 47  
57 48  
-
-
-
-
-
-
-
PG2  
PG3  
PG4  
PI0  
I/O  
I/O  
I/O  
I/O  
I/O  
I/O  
I/O  
Port G2  
Port G3  
Port G4  
Port I0  
Port I1  
Port I2  
Port I3  
58  
59  
60  
-
-
-
PI1  
PI2  
PI3  
Doc ID 14395 Rev 9  
35/110  
Pinouts and pin description  
STM8AF52/62xx, STM8AF51/61xx  
Table 13. STM8A microcontroller family pin description (continued)  
Pin number  
Input  
Output  
Main  
function  
(after  
Alternate  
function  
after remap  
[option bit]  
Default  
alternate  
function  
Pin name  
reset)  
61  
62  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PI4  
PI5  
I/O  
I/O  
I/O  
I/O  
I/O  
I/O  
X
X
X
X
X
X
X
X
X
X
X
X
X
O1  
O1  
O1  
O1  
O1  
O1  
X
X
X
X
X
X
X
X
X
X
X
X
Port I4  
Port I5  
63 49  
64 50  
65 51  
66 52  
PG5  
PG6  
PG7  
PE4  
Port G5  
Port G6  
Port G7  
Port E4  
Timer 1 -  
break input  
67 53 37  
-
PE3/TIM1_BKIN I/O  
X
X
X
O1  
X
X
Port E3  
68 54 38  
69 55 39  
-
-
PE2/I2C_SDA I/O  
PE1/I2C_SCL I/O  
X
X
X
X
O1 T(2)  
O1 T(2)  
-
-
Port E2  
Port E1  
I2C data  
I2C clock  
Configurable  
clock output  
70 56 40  
-
PE0/CLK_CCO I/O  
X
X
X
O3  
X
X
Port E0  
71  
72  
-
-
-
-
-
-
PI6  
PI7  
I/O  
I/O  
X
X
X
X
O1  
O1  
X
X
X
X
Port I6  
Port I7  
TIM1_BKIN  
[AFR3]/  
CLK_CCO  
[AFR2]  
Timer 3 -  
channel 2  
73 57 41 25 PD0/TIM3_CH2 I/O  
X
X
X
HS O3  
X
X
Port D0  
SWIM data  
interface  
74 58 42 26  
PD1/SWIM(3)  
I/O  
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
HS O4  
HS O3  
HS O3  
HS O3  
X
X
X
X
X
X
X
X
X
X
Port D1  
Port D2  
Port D3  
Port D4  
Port D5  
Port D6  
Timer 3 -  
channel 1  
TIM2_CH3  
[AFR1]  
75 59 43 27 PD2/TIM3_CH1 I/O  
Timer 2 -  
channel 2  
ADC_ETR  
[AFR0]  
76 60 44 28 PD3/TIM2_CH2 I/O  
PD4/TIM2_CH1/  
Timer 2 -  
channel 1  
BEEPoutput  
[AFR7]  
77 61 45 29  
I/O  
BEEP  
PD5/  
LINUART_TX  
LINUART  
data transmit  
78 62 46 30  
I/O  
O1  
O1  
O1  
LINUART  
data receive  
X
X
X
PD6/  
LINUART_RX  
79 63 47 31  
80 64 48 32  
I/O  
I/O  
X
X
X
X
X
X
X
X
Top level  
interrupt  
PD7/TLI(4)  
Port D7  
36/110  
Doc ID 14395 Rev 9  
STM8AF52/62xx, STM8AF51/61xx  
Pinouts and pin description  
1. In Halt/Active-halt mode, this pin behaves as follows:  
- The input/output path is disabled.  
- If the HSE clock is used for wakeup, the internal weak pull-up is disabled.  
- If the HSE clock is off, the internal weak pull-up setting is used. It is configured through Px_CR1[7:0] bits of the  
corresponding port control register. Px_CR1[7:0] bits must be set correctly to ensure that the pin is not left floating in  
Halt/Active-halt mode.  
2. In the open-drain output column, ‘T’ defines a true open-drain I/O (P-buffer, week pull-up and protection diode to VDD are  
not implemented)  
3. The PD1 pin is in input pull-up during the reset phase and after reset release.  
4. If this pin is configured as interrupt pin, it will trigger the TLI.  
6.2  
Alternate function remapping  
As shown in the rightmost column of Table 13, some alternate functions can be remapped at  
different I/O ports by programming one of eight AFR (alternate function remap) option bits.  
Refer to Section 9: Option bytes on page 51. When the remapping option is active, the  
default alternate function is no longer available.  
To use an alternate function, the corresponding peripheral must be enabled in the peripheral  
registers.  
Alternate function remapping does not effect GPIO capabilities of the I/O ports (see the  
GPIO section of the STM8S and STM8A microcontroller families reference manual,  
RM0016).  
Doc ID 14395 Rev 9  
37/110  
 
 
 
 
Memory and register map  
STM8AF52/62xx, STM8AF51/61xx  
7
Memory and register map  
7.1  
Memory map  
Figure 7.  
Register and memory map  
00 0000  
Up to 6 Kbytes RAM  
Stack  
RAM end address  
Reserved  
00 4000  
00 4800  
Up to 2 Kbytes data EEPROM  
Option bytes  
Reserved  
00 4900  
00 5000  
HW registers  
00 5800  
00 6000  
00 6800  
00 7F00  
00 8000  
00 8080  
Reserved  
2 Kbytes boot ROM  
CPU/SWIM/Debug/ITC registers  
IT vectors  
Up to 128 Kbytes  
Flash program memory  
Memory end address  
Table 14. Memory model 128K  
Flash program  
Flash program  
RAM end  
address  
Stack roll-over  
address  
memory end  
RAM size  
memory size  
address  
128K  
96K  
64K  
48K  
32K  
0x00 27FFF  
0x00 1FFFF  
0x00 17FFF  
0x00 13FFF  
0x00 0FFFF  
0x00 17FF  
0x00 17FF  
0x00 17FF  
0x00 0BFF  
0x00 17FF  
0x00 1400  
0x00 1400  
0x00 1400  
n/a(1)  
6K  
3K  
6K  
0x00 1400  
1. If the device contains the super set silicon (salestype contains SSS), the roll-over address is the same as  
on the 128K device. For more information on stack handling refer to the “Memory and register map” section  
in the reference manual RM0016. For more information on salestype composition, refer to section 13 in the  
present document.  
38/110  
Doc ID 14395 Rev 9  
 
 
 
 
 
STM8AF52/62xx, STM8AF51/61xx  
Memory and register map  
7.2  
Register map  
In this section the memory and register map of the devices covered by this datasheet is  
described. For a detailed description of the functionality of the registers, refer to the  
reference manual RM0016.  
Table 15. I/O port hardware register map  
Reset  
status  
Address  
Block  
Register label  
Register name  
0x00 5000  
0x00 5001  
0x00 5002  
0x00 5003  
0x00 5004  
0x00 5005  
0x00 5006  
0x00 5007  
0x00 5008  
0x00 5009  
0x00 500A  
0x00 500B  
0x00 500C  
0x00 500D  
0x00 500E  
0x00 500F  
0x00 5010  
0x00 5011  
0x00 5012  
0x00 5013  
0x00 5014  
0x00 5015  
0x00 5016  
0x00 5017  
0x00 5018  
0x00 5019  
0x00 501A  
0x00 501B  
0x00 501C  
0x00 501D  
PA_ODR  
PA_IDR  
Port A data output latch register  
Port A input pin value register  
Port A data direction register  
Port A control register 1  
0x00  
0xXX(1)  
0x00  
Port A  
PA_DDR  
PA_CR1  
PA_CR2  
PB_ODR  
PB_IDR  
PB_DDR  
PB_CR1  
PB_CR2  
PC_ODR  
PB_IDR  
PC_DDR  
PC_CR1  
PC_CR2  
PD_ODR  
PD_IDR  
PD_DDR  
PD_CR1  
PD_CR2  
PE_ODR  
PE_IDR  
PE_DDR  
PE_CR1  
PE_CR2  
PF_ODR  
PF_IDR  
PF_DDR  
PF_CR1  
PF_CR2  
0x00  
Port A control register 2  
0x00  
Port B data output latch register  
Port B input pin value register  
Port B data direction register  
Port B control register 1  
0x00  
0xXX(1)  
Port B  
Port C  
Port D  
Port E  
Port F  
0x00  
0x00  
Port B control register 2  
0x00  
Port C data output latch register  
Port C input pin value register  
Port C data direction register  
Port C control register 1  
0x00  
0xXX(1)  
0x00  
0x00  
Port C control register 2  
0x00  
Port D data output latch register  
Port D input pin value register  
Port D data direction register  
Port D control register 1  
0x00  
0xXX(1)  
0x00  
0x02  
Port D control register 2  
0x00  
Port E data output latch register  
Port E input pin value register  
Port E data direction register  
Port E control register 1  
0x00  
0xXX(1)  
0x00  
0x00  
Port E control register 2  
0x00  
Port F data output latch register  
Port F input pin value register  
Port F data direction register  
Port F control register 1  
0x00  
0xXX(1)  
0x00  
0x00  
Port F control register 2  
0x00  
Doc ID 14395 Rev 9  
39/110  
 
 
Memory and register map  
Address  
STM8AF52/62xx, STM8AF51/61xx  
Table 15. I/O port hardware register map (continued)  
Reset  
status  
Block  
Register label  
Register name  
0x00 501E  
0x00 501F  
0x00 5020  
0x00 5021  
0x00 5022  
0x00 5023  
0x00 5024  
0x00 5025  
0x00 5026  
0x00 5027  
0x00 5028  
0x00 5029  
0x00 502A  
0x00 502B  
0x00 502C  
PG_ODR  
PG_IDR  
PG_DDR  
PG_CR1  
PG_CR2  
PH_ODR  
PH_IDR  
PH_DDR  
PH_CR1  
PH_CR2  
PI_ODR  
PI_IDR  
Port G data output latch register  
Port G input pin value register  
Port G data direction register  
Port G control register 1  
0x00  
0xXX(1)  
0x00  
Port G  
0x00  
Port G control register 2  
0x00  
Port H data output latch register  
Port H input pin value register  
Port H data direction register  
Port H control register 1  
0x00  
0xXX(1)  
Port H  
0x00  
0x00  
Port H control register 2  
0x00  
Port I data output latch register  
Port I input pin value register  
Port I data direction register  
Port I control register 1  
0x00  
0xXX(1)  
Port I  
PI_DDR  
PI_CR1  
PI_CR2  
0x00  
0x00  
Port I control register 2  
0x00  
1. Depends on the external circuitry.  
Table 16. General hardware register map  
Reset  
status  
Address  
Block  
Register label  
Register name  
0x00 505A  
0x00 505B  
0x00 505C  
0x00 505D  
FLASH_CR1  
FLASH_CR2  
Flash control register 1  
Flash control register 2  
0x00  
0x00  
0xFF  
0x00  
FLASH_NCR2 Flash complementary control register 2  
FLASH_FPR  
Flash protection register  
Flash  
Flash complementary protection  
register  
0x00 505E  
0x00 505F  
FLASH_NFPR  
0xFF  
0x40  
Flash in-application programming  
status register  
FLASH_IAPSR  
0x00 5060 to  
0x005061  
Reserved area (2 bytes)  
Flash Program memory unprotection  
register  
0x00 5062  
Flash  
Flash  
FLASH_PUKR  
FLASH_DUKR  
0x00  
0x00  
0x00 5063  
0x00 5064  
Reserved area (1 byte)  
Data EEPROM unprotection register  
0x00 5065 to  
0x00 509F  
Reserved area (59 bytes)  
40/110  
Doc ID 14395 Rev 9  
 
 
STM8AF52/62xx, STM8AF51/61xx  
Table 16. General hardware register map (continued)  
Memory and register map  
Reset  
Address  
Block  
Register label  
Register name  
status  
0x00 50A0  
0x00 50A1  
EXTI_CR1  
EXTI_CR2  
External interrupt control register 1  
External interrupt control register 2  
0x00  
0x00  
ITC  
0x00 50A2 to  
0x00 50B2  
Reserved area (17 bytes)  
Reset status register  
0x00 50B3  
RST  
CLK  
RST_SR  
0xXX(1)  
0x00 50B4 to  
0x00 50BF  
Reserved area (12 bytes)  
0x00 50C0  
0x00 50C1  
0x00 50C2  
0x00 50C3  
0x00 50C4  
0x00 50C5  
0x00 50C6  
0x00 50C7  
0x00 50C8  
0x00 50C9  
0x00 50CA  
0x00 50CB  
0x00 50CC  
CLK_ICKR  
CLK_ECKR  
Internal clock control register  
External clock control register  
Reserved area (1 byte)  
0x01  
0x00  
CLK_CMSR  
CLK_SWR  
Clock master status register  
Clock master switch register  
Clock switch control register  
Clock divider register  
0xE1  
0xE1  
0xXX  
0x18  
0xFF  
0x00  
0x00  
0xFF  
CLK_SWCR  
CLK_CKDIVR  
CLK_PCKENR1  
CLK_CSSR  
Peripheral clock gating register 1  
Clock security system register  
Configurable clock control register  
Peripheral clock gating register 2  
Reserved area (1 byte)  
CLK  
CLK_CCOR  
CLK_PCKENR2  
CLK_HSITRIMR HSI clock calibration trimming register  
0x00  
0bXXXX  
XXX0  
0x00 50CD  
CLK_SWIMCCR  
SWIM clock control register  
0x00 50CE  
to 0x0050D0  
Reserved area (3 bytes)  
0x00 50D1  
0x00 50D2  
WWDG_CR  
WWDG_WR  
WWDG control register  
WWDR window register  
0x7F  
0x7F  
WWDG  
IWDG  
0x0050D3to  
0x00 50DF  
Reserved area (13 bytes)  
0x00 50E0  
0x00 50E1  
0x00 50E2  
IWDG_KR  
IWDG_PR  
IWDG_RLR  
IWDG key register  
IWDG prescaler register  
IWDG reload register  
0xXX(2)  
0x00  
0xFF  
0x00 50E3 to  
0x00 50EF  
Reserved area (13 bytes)  
0x00 50F0  
0x00 50F1  
0x00 50F2  
AWU_CSR1  
AWU_APR  
AWU_TBR  
AWU control/status register 1  
0x00  
0x3F  
0x00  
AWU asynchronous prescaler buffer  
register  
AWU  
AWU timebase selection register  
Doc ID 14395 Rev 9  
41/110  
Memory and register map  
STM8AF52/62xx, STM8AF51/61xx  
Table 16. General hardware register map (continued)  
Reset  
status  
Address  
Block  
Register label  
Register name  
0x00 50F3  
BEEP  
BEEP_CSR  
BEEP control/status register  
0x1F  
Reserved area (12 bytes)  
0x00 50F4 to  
0x00 50FF  
0x00 5200  
0x00 5201  
0x00 5202  
0x00 5203  
0x00 5204  
0x00 5205  
0x00 5206  
0x00 5207  
SPI_CR1  
SPI_CR2  
SPI control register 1  
SPI control register 2  
SPI interrupt control register  
SPI status register  
0x00  
0x00  
0x00  
0x02  
0x00  
0x07  
0xFF  
0xFF  
SPI_ICR  
SPI_SR  
SPI  
SPI_DR  
SPI data register  
SPI_CRCPR  
SPI_RXCRCR  
SPI_TXCRCR  
SPI CRC polynomial register  
SPI Rx CRC register  
SPI Tx CRC register  
Reserved area (8 bytes)  
0x00 5208 to  
0x00 520F  
0x00 5210  
0x00 5211  
0x00 5212  
0x00 5213  
0x00 5214  
0x00 5215  
0x00 5216  
0x00 5217  
0x00 5218  
0x00 5219  
0x00 521A  
0x00 521B  
0x00 521C  
0x00 521D  
I2C_CR1  
I2C_CR2  
I2C control register 1  
I2C control register 2  
0x00  
0x00  
0x00  
0x00  
0x00  
I2C_FREQR  
I2C_OARL  
I2C_OARH  
I2C frequency register  
I2C own address register low  
I2C own address register high  
I2C_DR  
I2C_SR1  
I2C data register  
I2C status register 1  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x02  
I2C  
I2C_SR2  
I2C status register 2  
I2C_SR3  
I2C status register 3  
I2C_ITR  
I2C interrupt control register  
I2C clock control register low  
I2C clock control register high  
I2C TRISE register  
I2C_CCRL  
I2C_CCRH  
I2C_TRISER  
0x00 521E to  
0x00 522F  
Reserved area (18 bytes)  
42/110  
Doc ID 14395 Rev 9  
STM8AF52/62xx, STM8AF51/61xx  
Table 16. General hardware register map (continued)  
Memory and register map  
Reset  
Address  
Block  
Register label  
Register name  
status  
0x00 5230  
0x00 5231  
0x00 5232  
0x00 5233  
0x00 5234  
0x00 5235  
0x00 5236  
0x00 5237  
0x00 5238  
0x00 5239  
0x00 523A  
UART1_SR  
UART1_DR  
USART status register  
USART data register  
0xC0  
0xXX  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
UART1_BRR1  
UART1_BRR2  
UART1_CR1  
UART1_CR2  
UART1_CR3  
UART1_CR4  
UART1_CR5  
UART1_GTR  
UART1_PSCR  
USART baud rate register 1  
USART baud rate register 2  
USART control register 1  
USART control register 2  
USART control register 3  
USART control register 4  
USART control register 5  
USART guard time register  
USART prescaler register  
USART  
0x00 523B to  
0x00 523F  
Reserved area (5 bytes)  
0x00 5240  
0x00 5241  
0x00 5242  
0x00 5243  
0x00 5244  
0x00 5245  
0x00 5246  
0x00 5247  
0x00 5248  
0x00 5249  
UART3_SR  
UART3_DR  
LINUART status register  
LINUART data register  
0xC0  
0xXX  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
UART3_BRR1  
UART3_BRR2  
UART3_CR1  
UART3_CR2  
UART3_CR3  
UART3_CR4  
LINUART baud rate register 1  
LINUART baud rate register 2  
LINUART control register 1  
LINUART control register 2  
LINUART control register 3  
LINUART control register 4  
Reserved  
LINUART  
UART3_CR6  
LINUART control register 6  
0x00  
0x00 524A to  
0x00 524F  
Reserved area (6 bytes)  
Doc ID 14395 Rev 9  
43/110  
Memory and register map  
Address  
STM8AF52/62xx, STM8AF51/61xx  
Table 16. General hardware register map (continued)  
Reset  
status  
Block  
Register label  
Register name  
0x00 5250  
0x00 5251  
0x00 5252  
0x00 5253  
0x00 5254  
0x00 5255  
0x00 5256  
0x00 5257  
0x00 5258  
0x00 5259  
0x00 525A  
0x00 525B  
TIM1_CR1  
TIM1_CR2  
TIM1_SMCR  
TIM1_ETR  
TIM1_IER  
TIM1 control register 1  
TIM1 control register 2  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
TIM1 slave mode control register  
TIM1 external trigger register  
TIM1 Interrupt enable register  
TIM1 status register 1  
TIM1_SR1  
TIM1_SR2  
TIM1_EGR  
TIM1 status register 2  
TIM1 event generation register  
TIM1_CCMR1 TIM1 capture/compare mode register 1  
TIM1_CCMR2 TIM1 capture/compare mode register 2  
TIM1_CCMR3 TIM1 capture/compare mode register 3  
TIM1_CCMR4 TIM1 capture/compare mode register 4  
TIM1 capture/compare enable register  
0x00 525C  
0x00 525D  
TIM1_CCER1  
1
0x00  
0x00  
TIM1 capture/compare enable register  
TIM1_CCER2  
2
0x00 525E  
0x00 525F  
0x00 5260  
0x00 5261  
0x00 5262  
0x00 5263  
0x00 5264  
0x00 5265  
0x00 5266  
0x00 5267  
0x00 5268  
0x00 5269  
0x00 526A  
0x00 526B  
0x00 526C  
0x00 526D  
0x00 526E  
0x00 526F  
TIM1_CNTRH  
TIM1_CNTRL  
TIM1_PSCRH  
TIM1_PSCRL  
TIM1_ARRH  
TIM1_ARRL  
TIM1_RCR  
TIM1 counter high  
0x00  
0x00  
0x00  
0x00  
0xFF  
0xFF  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
TIM1  
TIM1 counter low  
TIM1 prescaler register high  
TIM1 prescaler register low  
TIM1 auto-reload register high  
TIM1 auto-reload register low  
TIM1 repetition counter register  
TIM1 capture/compare register 1 high  
TIM1 capture/compare register 1 low  
TIM1 capture/compare register 2 high  
TIM1 capture/compare register 2 low  
TIM1 capture/compare register 3 high  
TIM1 capture/compare register 3 low  
TIM1 capture/compare register 4 high  
TIM1 capture/compare register 4 low  
TIM1 break register  
TIM1_CCR1H  
TIM1_CCR1L  
TIM1_CCR2H  
TIM1_CCR2L  
TIM1_CCR3H  
TIM1_CCR3L  
TIM1_CCR4H  
TIM1_CCR4L  
TIM1_BKR  
TIM1_DTR  
TIM1 dead-time register  
TIM1_OISR  
TIM1 output idle state register  
44/110  
Doc ID 14395 Rev 9  
STM8AF52/62xx, STM8AF51/61xx  
Table 16. General hardware register map (continued)  
Memory and register map  
Reset  
Address  
Block  
Register label  
Register name  
status  
0x00 5270 to  
0x00 52FF  
Reserved area (147 bytes)  
0x00 5300  
0x00 5301  
0x00 5302  
0x00 5303  
0x00 5304  
0x00 5305  
0x00 5306  
0x00 5307  
TIM2_CR1  
TIM2_IER  
TIM2 control register 1  
TIM2 interrupt enable register  
TIM2 status register 1  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
TIM2_SR1  
TIM2_SR2  
TIM2 status register 2  
TIM2_EGR  
TIM2_CCMR1  
TIM2_CCMR2  
TIM2_CCMR3  
TIM2 event generation register  
TIM2 capture/compare mode register 1  
TIM2 capture/compare mode register 2  
TIM2 capture/compare mode register 3  
TIM2 capture/compare enable register  
1
0x00 5308  
0x00 5309  
TIM2_CCER1  
TIM2_CCER2  
0x00  
0x00  
TIM2 capture/compare enable register  
2
TIM2  
0x00 530A  
0x00 530B  
00 530C0x  
0x00 530D  
0x00 530E  
0x00 530F  
0x00 5310  
0x00 5311  
0x00 5312  
0x00 5313  
0x00 5314  
TIM2_CNTRH  
TIM2_CNTRL  
TIM2_PSCR  
TIM2_ARRH  
TIM2_ARRL  
TIM2_CCR1H  
TIM2_CCR1L  
TIM2_CCR2H  
TIM2_CCR2L  
TIM2_CCR3H  
TIM2_CCR3L  
TIM2 counter high  
TIM2 counter low  
0x00  
0x00  
0x00  
0xFF  
0xFF  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
TIM2 prescaler register  
TIM2 auto-reload register high  
TIM2 auto-reload register low  
TIM2 capture/compare register 1 high  
TIM2 capture/compare register 1 low  
TIM2 capture/compare reg. 2 high  
TIM2 capture/compare register 2 low  
TIM2 capture/compare register 3 high  
TIM2 capture/compare register 3 low  
Reserved area (11 bytes)  
0x00 5315 to  
0x00 531F  
Doc ID 14395 Rev 9  
45/110  
Memory and register map  
Address  
STM8AF52/62xx, STM8AF51/61xx  
Table 16. General hardware register map (continued)  
Reset  
status  
Block  
Register label  
Register name  
0x00 5320  
0x00 5321  
0x00 5322  
0x00 5323  
0x00 5324  
0x00 5325  
0x00 5326  
TIM3_CR1  
TIM3_IER  
TIM3_SR1  
TIM3_SR2  
TIM3_EGR  
TIM3 control register 1  
TIM3 interrupt enable register  
TIM3 status register 1  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
TIM3 status register 2  
TIM3 event generation register  
TIM3_CCMR1 TIM3 capture/compare mode register 1  
TIM3_CCMR2 TIM3 capture/compare mode register 2  
TIM3 capture/compare enable register  
0x00 5327  
TIM3_CCER1  
1
0x00  
TIM3  
0x00 5328  
0x00 5329  
0x00 532A  
0x00 532B  
0x00 532C  
0x00 532D  
0x00 532E  
0x00 532F  
0x00 5330  
TIM3_CNTRH  
TIM3_CNTRL  
TIM3_PSCR  
TIM3_ARRH  
TIM3_ARRL  
TIM3_CCR1H  
TIM3_CCR1L  
TIM3_CCR2H  
TIM3_CCR2L  
TIM3 counter high  
TIM3 counter low  
0x00  
0x00  
0x00  
0xFF  
0xFF  
0x00  
0x00  
0x00  
0x00  
TIM3 prescaler register  
TIM3 auto-reload register high  
TIM3 auto-reload register low  
TIM3 capture/compare register 1 high  
TIM3 capture/compare register 1 low  
TIM3 capture/compare register 2 high  
TIM3 capture/compare register 2 low  
Reserved area (15 bytes)  
0x00 5331 to  
0x00 533F  
0x00 5340  
0x00 5341  
0x00 5342  
0x00 5343  
0x00 5344  
0x00 5345  
0x00 5346  
TIM4_CR1  
TIM4_IER  
TIM4 control register 1  
TIM4 interrupt enable register  
TIM4 status register  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0xFF  
TIM4_SR  
TIM4  
TIM4_EGR  
TIM4_CNTR  
TIM4_PSCR  
TIM4_ARR  
TIM4 event generation register  
TIM4 counter  
TIM4 prescaler register  
TIM4 auto-reload register  
0x00 5347 to  
0x00 53FF  
Reserved area (185 bytes)  
46/110  
Doc ID 14395 Rev 9  
STM8AF52/62xx, STM8AF51/61xx  
Table 16. General hardware register map (continued)  
Memory and register map  
Reset  
Address  
Block  
Register label  
Register name  
status  
0x00 5400  
0x00 5401  
0x00 5402  
0x00 5403  
0x00 5404  
0x00 5405  
ADC _CSR  
ADC_CR1  
ADC_CR2  
ADC_CR3  
ADC_DRH  
ADC_DRL  
ADC control/status register  
ADC configuration register 1  
ADC configuration register 2  
ADC configuration register 3  
ADC data register high  
0x00  
0x00  
0x00  
0x00  
0xXX  
0xXX  
ADC  
ADC data register low  
ADC Schmitt trigger disable register  
high  
0x00 5406  
0x00 5407  
ADC_TDRH  
ADC_TDRL  
0x00  
0x00  
ADC Schmitt trigger disable register  
low  
0x00 5408 to  
0x00 541F  
Reserved area (24 bytes)  
0x00 5420  
0x00 5421  
0x00 5422  
0x00 5423  
0x00 5424  
0x00 5425  
0x00 5426  
0x00 5427  
0x00 5428  
0x00 5429  
0x00 542A  
0x00 542B  
0x00 542C  
0x00 542D  
0x00 542E  
0x00 542F  
0x00 5430  
0x00 5431  
0x00 5432  
0x00 5433  
0x00 5434  
0x00 5435  
0x00 5436  
CAN_MCR  
CAN_MSR  
CAN_TSR  
CAN_TPR  
CAN_RFR  
CAN_IER  
CAN_DGR  
CAN_FPSR  
CAN_P0  
CAN_P1  
CAN_P2  
CAN_P3  
CAN_P4  
CAN_P5  
CAN_P6  
CAN_P7  
CAN_P8  
CAN_P9  
CAN_PA  
CAN_PB  
CAN_PC  
CAN_PD  
CAN_PE  
CAN master control register  
CAN master status register  
CAN transmit status register  
CAN transmit priority register  
CAN receive FIFO register  
CAN interrupt enable register  
CAN diagnosis register  
CAN page selection register  
CAN paged register 0  
CAN paged register 1  
CAN paged register 2  
CAN paged register 3  
CAN paged register 4  
CAN paged register 5  
CAN paged register 6  
CAN paged register 7  
CAN paged register 8  
CAN paged register 9  
CAN paged register A  
CAN paged register B  
CAN paged register C  
CAN paged register D  
CAN paged register E  
0x02  
0x02  
0x00  
0x0C  
0x00  
0x00  
0x0C  
0x00  
0xXX(3)  
0xXX(3)  
0xXX(3)  
0xXX(3)  
0xXX(3)  
0xXX(3)  
0xXX(3)  
0xXX(3)  
0xXX(3)  
0xXX(3)  
0xXX(3)  
0xXX(3)  
0xXX(3)  
0xXX(3)  
0xXX(3)  
beCAN  
Doc ID 14395 Rev 9  
47/110  
Memory and register map  
STM8AF52/62xx, STM8AF51/61xx  
Table 16. General hardware register map (continued)  
Reset  
status  
Address  
Block  
Register label  
Register name  
0x00 5437  
beCAN  
CAN_PF  
CAN paged register F  
0xXX(3)  
0x00 5438 to  
0x00 57FF  
Reserved area (968 bytes)  
1. Depends on the previous reset source.  
2. Write only register.  
3. If the bootloader is enabled, it is initialized to 0x00.  
Table 17. CPU/SWIM/debug module/interrupt controller registers  
Reset  
status  
Address  
Block  
Register label  
Register name  
0x00 7F00  
0x00 7F01  
0x00 7F02  
0x00 7F03  
0x00 7F04  
0x00 7F05  
0x00 7F06  
0x00 7F07  
0x00 7F08  
0x00 7F09  
0x00 7F0A  
A
Accumulator  
Program counter extended  
Program counter high  
Program counter low  
X index register high  
X index register low  
Y index register high  
Y index register low  
Stack pointer high  
0x00  
0x00  
0x80  
0x00  
0x00  
0x00  
0x00  
0x00  
0x17(2)  
0xFF  
0x28  
PCE  
PCH  
PCL  
XH  
CPU(1)  
XL  
YH  
YL  
SPH  
SPL  
CC  
Stack pointer low  
Condition code register  
0x00 7F0B  
to 0x00  
7F5F  
Reserved area (85 bytes)  
0x00 7F60  
0x00 7F70  
0x00 7F71  
0x00 7F72  
0x00 7F73  
0x00 7F74  
0x00 7F75  
0x00 7F76  
0x00 7F77  
CPU  
ITC  
CFG_GCR  
ITC_SPR1  
ITC_SPR2  
ITC_SPR3  
ITC_SPR4  
ITC_SPR5  
ITC_SPR6  
ITC_SPR7  
ITC_SPR8  
Global configuration register  
Interrupt software priority register 1  
Interrupt software priority register 2  
Interrupt software priority register 3  
Interrupt software priority register 4  
Interrupt software priority register 5  
Interrupt software priority register 6  
Interrupt software priority register 7  
Interrupt software priority register 8  
0x00  
0xFF  
0xFF  
0xFF  
0xFF  
0xFF  
0xFF  
0xFF  
0xFF  
0x00 7F78  
to  
Reserved area (2 bytes)  
0x00 7F79  
0x00 7F80  
SWIM  
SWIM_CSR  
SWIM control status register  
0x00  
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STM8AF52/62xx, STM8AF51/61xx  
Memory and register map  
Table 17. CPU/SWIM/debug module/interrupt controller registers (continued)  
Reset  
status  
Address  
Block  
Register label  
Register name  
0x00 7F81  
to  
Reserved area (15 bytes)  
0x00 7F8F  
0x00 7F90  
0x00 7F91  
0x00 7F92  
0x00 7F93  
0x00 7F94  
0x00 7F95  
0x00 7F96  
0x00 7F97  
0x00 7F98  
0x00 7F99  
0x00 7F9A  
DM_BK1RE  
DM_BK1RH  
DM_BK1RL  
DM_BK2RE  
DM_BK2RH  
DM_BK2RL  
DM_CR1  
DM breakpoint 1 register extended byte  
DM breakpoint 1 register high byte  
DM breakpoint 1 register low byte  
DM breakpoint 2 register extended byte  
DM breakpoint 2 register high byte  
DM breakpoint 2 register low byte  
DM debug module control register 1  
DM debug module control register 2  
DM debug module control/status register 1  
DM debug module control/status register 2  
DM enable function register  
0xFF  
0xFF  
0xFF  
0xFF  
0xFF  
0xFF  
0x00  
0x00  
0x10  
0x00  
0xFF  
DM  
DM_CR2  
DM_CSR1  
DM_CSR2  
DM_ENFCTR  
0x00 7F9B  
to 0x00  
7F9F  
Reserved area (5 bytes)  
1. Accessible by debug module only  
2. Product dependent value, see Figure 7: Register and memory map.  
Table 18. Temporary memory unprotection registers  
Reset  
status  
Address  
Block  
Register label  
Register name  
0x00 5800  
0x00 5801  
0x00 5802  
0x00 5803  
0x00 5804  
0x00 5805  
0x00 5806  
0x00 5807  
TMU_K1  
TMU_K2  
TMU_K3  
TMU_K4  
TMU_K5  
TMU_K6  
TMU_K7  
TMU_K8  
Temporary memory unprotection key register 1  
Temporary memory unprotection key register 2  
Temporary memory unprotection key register 3  
Temporary memory unprotection key register 4  
Temporary memory unprotection key register 5  
Temporary memory unprotection key register 6  
Temporary memory unprotection key register 7  
Temporary memory unprotection key register 8  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
TMU  
Temporary memory unprotection control and status  
register  
0x00 5808  
TMU_CSR  
0x00  
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Interrupt table  
STM8AF52/62xx, STM8AF51/61xx  
8
Interrupt table  
(1)  
Table 19. STM8A interrupt table  
Interrupt vector  
address  
Wakeup  
Priority Source block  
Description  
Comments  
from Halt  
0
Reset  
TRAP  
TLI  
Reset  
0x00 6000  
0x00 8004  
0x00 8008  
0x00 800C  
Yes  
Reset vector in ROM  
SW interrupt  
External top level interrupt  
Auto-wakeup from Halt  
1
AWU  
Yes  
Clock  
controller  
2
Main clock controller  
0x00 8010  
3
4
MISC  
MISC  
MISC  
MISC  
MISC  
CAN  
CAN  
SPI  
External interrupt E0  
External interrupt E1  
External interrupt E2  
External interrupt E3  
External interrupt E4  
CAN interrupt Rx  
0x00 8014  
0x00 8018  
0x00 801C  
0x00 8020  
0x00 8024  
0x00 8028  
0x00 802C  
0x00 8030  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Port A interrupts  
Port B interrupts  
Port C interrupts  
Port D interrupts  
Port E interrupts  
5
6
7
8
9
CAN interrupt TX/ER/SC  
End of transfer  
10  
Yes  
Update/overflow/  
trigger/break  
11  
Timer 1  
0x00 8034  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
Timer 1  
Timer 2  
Timer 2  
Timer 3  
Timer 3  
USART  
USART  
I2C  
Capture/compare  
Update/overflow  
Capture/compare  
Update/overflow  
Capture/compare  
Tx complete  
0x00 8038  
0x00 803C  
0x00 8040  
0x00 8044  
0x00 8048  
0x00 804C  
0x00 8050  
0x00 8054  
0x00 8058  
0x00 805C  
0x00 8060  
0x00 8064  
Yes  
Receive data full reg.  
I2C interrupts  
LINUART  
LINUART  
ADC  
Tx complete/error  
Receive data full reg.  
End of conversion  
Update/overflow  
Timer 4  
End of programming/  
write in not allowed area  
24  
EEPROM  
0x00 8068  
1. All unused interrupts must be initialized with ‘IRET’ for robust programming.  
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STM8AF52/62xx, STM8AF51/61xx  
Option bytes  
9
Option bytes  
Option bytes contain configurations for device hardware features as well as the memory  
protection of the device. They are stored in a dedicated block of the memory. Each option  
byte has to be stored twice, for redundancy, in a regular form (OPTx) and a complemented  
one (NOPTx), except for the ROP (read-out protection) option byte and option bytes 8 to 16.  
Option bytes can be modified in ICP mode (via SWIM) by accessing the EEPROM address  
shown in Table 20: Option bytes below.  
Option bytes can also be modified ‘on the fly’ by the application in IAP mode, except the  
ROP and UBC options that can only be changed in ICP mode (via SWIM).  
Refer to the STM8 Flash programming manual (PM0047) and STM8 SWIM communication  
protocol and debug module user manual (UM0470) for information on SWIM programming  
procedures.  
Table 20. Option bytes  
Option  
Option  
name  
Option bits  
Factory  
default  
setting  
Addr.  
byte  
no.  
7
6
5
4
3
2
1
0
Read-out  
protection  
(ROP)  
0x00  
4800  
OPT0  
ROP[7:0]  
0x00  
0x00  
4801  
OPT1  
NOPT1  
OPT2  
UBC[7:0]  
0x00  
0xFF  
0x00  
0xFF  
0x00  
0xFF  
0x00  
0xFF  
0x00  
0xFF  
User boot  
code  
(UBC)  
0x00  
4802  
NUBC[7:0]  
0x00  
4803  
Alternate  
function  
remapping  
(AFR)  
AFR7 AFR6 AFR5 AFR4 AFR3  
AFR2  
AFR1  
AFR0  
0x00  
4804  
NOPT2 NAFR7 NAFR6 NAFR5 NAFR4 NAFR3 NAFR2 NAFR1 NAFR0  
0x00  
4805  
LSI_  
EN  
IWDG  
_HW  
WWD  
G _HW _HALT  
WWDG  
OPT3  
NOPT3  
OPT4  
Reserved  
Reserved  
Reserved  
Reserved  
Watchdog  
option  
0x00  
4806  
NLSI_ NIWD  
EN  
NWWD NWWG  
G_HW  
G_HW  
_HALT  
0x00  
4807  
EXT  
CLK  
CKAW  
USEL  
PRSC1 PRSC0  
Clock  
option  
0x00  
4808  
NEXT NCKAW  
CLK  
NPRSC  
NOPT4  
OPT5  
NPRSC1  
0
USEL  
0x00  
4809  
HSECNT[7:0]  
HSE clock  
startup  
0x00  
480A  
NOPT5  
NHSECNT[7:0]  
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Option bytes  
STM8AF52/62xx, STM8AF51/61xx  
Table 20. Option bytes (continued)  
Option  
Option  
name  
Option bits  
Factory  
default  
setting  
Addr.  
byte  
no.  
7
6
5
4
3
2
1
0
0x00  
480B  
OPT6  
NOPT6  
OPT7  
TMU[3:0]  
0x00  
TMU  
0x00  
480C  
NTMU[3:0]  
0xFF  
0x00  
0xFF  
0x00  
480D  
WAIT  
STATE  
Reserved  
Flash wait  
states  
0x00  
480E  
NWAIT  
STATE  
NOPT7  
Reserved  
0x00  
480F  
Reserved  
0x00  
4810  
OPT8  
OPT9  
TMU_KEY 1 [7:0]  
TMU_KEY 2 [7:0]  
TMU_KEY 3 [7:0]  
TMU_KEY 4 [7:0]  
TMU_KEY 5 [7:0]  
TMU_KEY 6 [7:0]  
TMU_KEY 7 [7:0]  
TMU_KEY 8 [7:0]  
TMU_MAXATT [7:0]  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0x00  
0xC7  
0x00  
4811  
0x00  
4812  
OPT10  
OPT11  
OPT12  
OPT13  
OPT14  
OPT15  
OPT16  
0x00  
4813  
0x00  
4814  
TMU  
0x00  
4815  
0x00  
4816  
0x00  
4817  
0x00  
4818  
0x00  
4819  
to  
Reserved  
487D  
0x00  
487E  
OPT17  
BL [7:0]  
0x00  
0xFF  
Boot-  
loader(1)  
0x00  
487F  
NOPT  
17  
NBL [7:0]  
1. This option consists of two bytes that must have a complementary value in order to be valid. If the option is invalid, it has no  
effect on EMC reset.  
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STM8AF52/62xx, STM8AF51/61xx  
Option bytes  
Table 21. Option byte description  
Option byte no.  
Description  
ROP[7:0]: Memory readout protection (ROP)  
0xAA: Enable readout protection (write access via SWIM protocol)  
Note: Refer to the STM8A microcontroller family reference manual  
(RM0016) section on Flash/EEPROM memory readout protection for  
details.  
OPT0  
UBC[7:0]: User boot code area  
0x00: No UBC, no write-protection  
0x01: Page 0 to 1 defined as UBC, memory write-protected  
0x02: Page 0 to 3 defined as UBC, memory write-protected  
0x03 to 0xFF: Pages 4 to 255 defined as UBC, memory write-protected  
Note: Refer to the STM8A microcontroller family reference manual  
(RM0016) section on Flash/EEPROM write protection for more details.  
OPT1  
AFR7: Alternate function remapping option 7  
0: Port D4 alternate function = TIM2_CH1  
1: Port D4 alternate function = BEEP  
AFR6: Alternate function remapping option 6  
0: Port B5 alternate function = AIN5, port B4 alternate function = AIN4  
1: Port B5 alternate function = I2C_SDA, port B4 alternate function =  
I2C_SCL.  
AFR5: Alternate function remapping option 5  
0: Port B3 alternate function = AIN3, port B2 alternate function = AIN2,  
port B1 alternate function = AIN1, port B0 alternate function = AIN0.  
1: Port B3 alternate function = TIM1_ETR, port B2 alternate function =  
TIM1_CH3N, port B1 alternate function = TIM1_CH2N, port B0 alternate  
function = TIM1_CH1N.  
AFR4: Alternate function remapping option 4  
0: Port D7 alternate function = TLI  
1: Reserved  
OPT2  
AFR3: Alternate function remapping option 3  
0: Port D0 alternate function = TIM3_CH2  
1: Port D0 alternate function = TIM1_BKIN  
AFR2: Alternate function remapping option 2  
0: Port D0 alternate function = TIM3_CH2  
1: Port D0 alternate function = CLK_CCO  
Note: AFR2 option has priority over AFR3 if both are activated  
AFR1: Alternate function remapping option 1  
0: Port A3 alternate function = TIM2_CH3, port D2 alternate function  
TIM3_CH1.  
1: Port A3 alternate function = TIM3_CH1, port D2 alternate function  
TIM2_CH3.  
AFR0: Alternate function remapping option 0  
0: Port D3 alternate function = TIM2_CH2  
1: Port D3 alternate function = ADC_ETR  
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Option bytes  
Table 21. Option byte description (continued)  
STM8AF52/62xx, STM8AF51/61xx  
Option byte no.  
Description  
LSI_EN: Low speed internal clock enable  
0: LSI clock is not available as CPU clock source  
1: LSI clock is available as CPU clock source  
IWDG_HW: Independent watchdog  
0: IWDG Independent watchdog activated by software  
1: IWDG Independent watchdog activated by hardware  
OPT3  
WWDG_HW: Window watchdog activation  
0: WWDG window watchdog activated by software  
1: WWDG window watchdog activated by hardware  
WWDG_HALT: Window watchdog reset on Halt  
0: No reset generated on Halt if WWDG active  
1: Reset generated on Halt if WWDG active  
EXTCLK: External clock selection  
0: External crystal connected to OSCIN/OSCOUT  
1: External clock signal on OSCIN  
CKAWUSEL: Auto-wakeup unit/clock  
0: LSI clock source selected for AWU  
1: HSE clock with prescaler selected as clock source for AWU  
OPT4  
PRSC[1:0]: AWU clock prescaler  
00: 24 MHz to 128 kHz prescaler  
01: 16 MHz to 128 kHz prescaler  
10: 8 MHz to 128 kHz prescaler  
11: 4 MHz to 128 kHz prescaler  
HSECNT[7:0]: HSE crystal oscillator stabilization time  
This configures the stabilization time to 0.5, 8, 128, and 2048 HSE  
cycles with corresponding option byte values of 0xE1, 0xD2, 0xB4, and  
0x00.  
OPT5  
OPT6  
TMU[3:0]: Enable temporary memory unprotection  
0101: TMU disabled (permanent ROP).  
Any other value: TMU enabled.  
WAIT STATE: Wait state configuration  
This option configures the number of wait states inserted when reading  
from the Flash/data EEPROM memory.  
0: No wait state  
OPT7  
1: One wait state  
TMU_KEY 1 [7:0]: Temporary unprotection key 0  
OPT8  
OPT9  
Temporary unprotection key: Must be different from 0x00 or 0xFF  
TMU_KEY 2 [7:0]: Temporary unprotection key 1  
Temporary unprotection key: Must be different from 0x00 or 0xFF  
TMU_KEY 3 [7:0]: Temporary unprotection key 2  
OPT10  
OPT11  
Temporary unprotection key: Must be different from 0x00 or 0xFF  
TMU_KEY 4 [7:0]: Temporary unprotection key 3  
Temporary unprotection key: Must be different from 0x00 or 0xFF  
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STM8AF52/62xx, STM8AF51/61xx  
Table 21. Option byte description (continued)  
Option bytes  
Option byte no.  
Description  
TMU_KEY 5 [7:0]: Temporary unprotection key 4  
OPT12  
Temporary unprotection key: Must be different from 0x00 or 0xFF  
TMU_KEY 6 [7:0]: Temporary unprotection key 5  
OPT13  
OPT14  
OPT15  
Temporary unprotection key: Must be different from 0x00 or 0xFF  
TMU_KEY 7 [7:0]: Temporary unprotection key 6  
Temporary unprotection key: Must be different from 0x00 or 0xFF  
TMU_KEY 8 [7:0]: Temporary unprotection key 7  
Temporary unprotection key: Must be different from 0x00 or 0xFF  
TMU_MAXATT [7:0]: TMU access failure counter  
TMU_MAXATT can be initialized with the desired value only if TMU is  
disabled (TMU[3:0]=0101 in OPT6 option byte).  
OPT16  
OPT17  
When TMU is enabled, any attempt to temporary remove the readout  
protection by using wrong key values increments the counter.  
When the option byte value reaches 0x08, the Flash memory and data  
EEPROM are erased.  
BL[7:0]: Bootloader enable  
If this option byte is set to 0x55 (complementary value 0xAA) the  
bootloader program is activated also in case of a programmed code  
memory (for more details, see the bootloader user manual, UM0560).  
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Electrical characteristics  
STM8AF52/62xx, STM8AF51/61xx  
10  
Electrical characteristics  
10.1  
Parameter conditions  
Unless otherwise specified, all voltages are referred to V  
.
SS  
10.1.1  
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 = -40 °C, T = 25 °C, and  
A
A
T = T  
(given by the selected temperature range).  
A
Amax  
Data based on characterization results, design simulation and/or technology characteristics  
are indicated in the table footnotes and are not tested in production.  
10.1.2  
Typical values  
Unless otherwise specified, typical data are based on T = 25 °C, V = 5.0 V. They are  
A
DD  
given only as design guidelines and are not tested.  
Typical ADC accuracy values are determined by characterization of a batch of samples from  
a standard diffusion lot over the full temperature range.  
10.1.3  
10.1.4  
Typical curves  
Unless otherwise specified, all typical curves are given only as design guidelines and are  
not tested.  
Loading capacitor  
The loading conditions used for pin parameter measurement are shown in Figure 8.  
Figure 8.  
Pin loading conditions  
STM8A pin  
50 pF  
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STM8AF52/62xx, STM8AF51/61xx  
Electrical characteristics  
10.1.5  
Pin input voltage  
The input voltage measurement on a pin of the device is described in Figure 9.  
Figure 9. Pin input voltage  
STM8A pin  
V
IN  
10.2  
Absolute maximum ratings  
Stresses above those listed as ‘absolute maximum ratings’ may cause permanent damage  
to the device. This is a stress rating only and functional operation of the device under these  
conditions is not implied. Exposure to maximum rating conditions for extended periods may  
affect device reliability.  
Table 22. Voltage characteristics  
Symbol  
Ratings  
Min  
Max  
Unit  
(1)  
V
DDx - VSS Supply voltage (including VDDA and VDDIO  
)
-0.3  
VSS - 0.3  
VSS - 0.3  
6.5  
6.5  
V
Input voltage on true open drain pins (PE1, PE2)(2)  
Input voltage on any other pin(2)  
VIN  
V
VDD + 0.3  
50  
|VDDx - VDD| Variations between different power pins  
mV  
|VSSx - VSS| Variations between all the different ground pins  
50  
see Absolute maximum ratings  
(electrical sensitivity) on  
page 85  
VESD  
Electrostatic discharge voltage  
1. All power (VDD, VDDIO, VDDA) and ground (VSS, VSSIO, VSSA) pins must always be connected to the  
external power supply  
2. IINJ(PIN) must never be exceeded. This is implicitly insured if VIN maximum is respected. If VIN maximum  
cannot be respected, the injection current must be limited externally to the IINJ(PIN) value. A positive  
injection is induced by VIN > VDD while a negative injection is induced by VIN < VSS. For true open-drain  
pads, there is no positive injection current, and the corresponding VIN maximum must always be respected  
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Electrical characteristics  
STM8AF52/62xx, STM8AF51/61xx  
Table 23. Current characteristics  
Symbol  
Ratings  
Max.  
Unit  
IVDDIO  
IVSSIO  
Total current into VDDIO power lines (source)(1)(2)(3)  
Total current out of VSS IO ground lines (sink)(1)(2)(3)  
Output current sunk by any I/O and control pin  
Output current source by any I/Os and control pin  
Injected current on any pin  
100  
100  
20  
IIO  
mA  
-20  
10  
(4)  
IINJ(PIN)  
IINJ(TOT)  
Sum of injected currents  
50  
1. All power (VDD, VDDIO, VDDA) and ground (VSS, VSSIO, VSSA) pins must always be connected to the  
external supply.  
2. The total limit applies to the sum of operation and injected currents.  
3. VDDIO includes the sum of the positive injection currents. VSSIO includes the sum of the negative injection  
currents.  
4. This condition is implicitly insured if VIN maximum is respected. If VIN maximum cannot be respected, the  
injection current must be limited externally to the IINJ(PIN) value. A positive injection is induced by VIN >  
VDD while a negative injection is induced by VIN < VSS. For true open-drain pads, there is no positive  
injection current allowed and the corresponding VIN maximum must always be respected.  
Table 24. Thermal characteristics  
Symbol  
Ratings  
Value  
Unit  
TSTG  
TJ  
Storage temperature range  
-65 to 150  
160  
°C  
Maximum junction temperature  
(1)  
Table 25. Operating lifetime  
Symbol  
Ratings  
Value  
Unit  
40 to 125 °C  
40 to 150 °C  
Grade 1  
Grade 0  
OLF  
Conforming to AEC-Q100 rev G  
1. For detailed mission profile analysis, please contact your local ST Sales Office.  
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STM8AF52/62xx, STM8AF51/61xx  
Electrical characteristics  
10.3  
Operating conditions  
Table 26. General operating conditions  
Symbol  
Parameter  
Conditions  
Min  
Max  
Unit  
1 wait state  
TA = -40 °C to 150 °C  
16  
24  
fCPU  
Internal CPU clock frequency  
MHz  
0 wait state  
TA = -40 °C to 150 °C  
0
16  
5.5  
VDD/VDDIO Standard operating voltage  
-
3.0  
470  
V
CEXT: capacitance of external  
capacitor  
3300  
nF  
(1)  
VCAP  
ESR of external capacitor  
ESL of external capacitor  
-
-
0.3  
15  
Ω
at 1 MHz(2)  
nH  
Suffix A  
Suffix B  
Suffix C  
Suffix D  
Suffix A  
Suffix B  
Suffix C  
Suffix D  
85  
105  
125  
150  
90  
TA  
Ambient temperature  
- 40  
°C  
110  
130  
155  
TJ  
Junction temperature range  
1. Care should be taken when selecting the capacitor, due to its tolerance, as well as the parameter  
dependency on temperature, DC bias and frequency in addition to other factors. The parameter maximum  
value must be respected for the full application range.  
2. This frequency of 1 MHz as a condition for VCAP parameters is given by design of internal regulator.  
Figure 10. f  
versus V  
DD  
CPUmax  
fCPU [MHz]  
24  
16  
Functionality guaranteed  
Functionality  
not guaranteed  
in this area  
@ T -40 to 150 °C at 1 waitstate  
A
12  
8
Functionality guaranteed  
@ T -40 to 150 °C at 0 waitstate  
A
4
0
3.0  
4.0  
5.0  
5.5  
Supply voltage [V]  
Doc ID 14395 Rev 9  
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Electrical characteristics  
STM8AF52/62xx, STM8AF51/61xx  
Table 27. Operating conditions at power-up/power-down  
Symbol  
Parameter  
Conditions  
Min  
Typ  
Max  
Unit  
VDD rise time rate  
VDD fall time rate  
2(1)  
2(1)  
3
tVDD  
µs/V  
Reset release delay  
Reset generation delay  
VDD rising  
ms  
µs  
tTEMP  
V
DD falling  
3
Power-on reset  
threshold(2)  
VIT+  
VIT-  
2.65  
2.58  
2.8  
2.95  
2.88  
V
Brown-out reset  
threshold  
2.73  
70(1)  
Brown-out reset  
hysteresis  
VHYS(BOR)  
mV  
1. Guaranteed by design, not tested in production.  
2. If VDD is below 3 V, the code execution is guaranteed above the VIT- and VIT+ thresholds. RAM content is  
kept. The EEPROM programming sequence must not be initiated.  
10.3.1  
VCAP external capacitor  
Stabilization for the main regulator is achieved connecting an external capacitor C  
to the  
EXT  
V
pin. C  
is specified in Table 26. Care should be taken to limit the series inductance  
CAP  
EXT  
to less than 15 nH.  
Figure 11. External capacitor C  
EXT  
ESR  
C
ESL  
Rleak  
1. Legend: ESR is the equivalent series resistance and ESL is the equivalent inductance.  
10.3.2  
Supply current characteristics  
The current consumption is measured as described in Figure 8 on page 56 and Figure 9 on  
page 57.  
If not explicitly stated, general conditions of temperature and voltage apply.  
60/110  
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STM8AF52/62xx, STM8AF51/61xx  
Electrical characteristics  
Table 28. Total current consumption in Run, Wait and Slow mode. General conditions  
for V apply, T = 40 °C to 150 °C  
DD  
A
Symbol  
Parameter  
Conditions  
fCPU = 24 MHz 1 ws  
Typ  
Max  
Unit  
8.7  
7.4  
16.8(2)  
All peripherals  
clocked, code  
fCPU = 16 MHz  
fCPU = 8 MHz  
fCPU = 4 MHz  
fCPU = 2 MHz  
fCPU = 24 MHz  
fCPU = 16 MHz  
14  
Supply current in executed from Flash  
Run mode  
(1)  
IDD(RUN)  
4.0  
7.4(2)  
4.1(2)  
2.5  
program memory,  
HSE external clock  
(without resonator)  
2.4  
1.5  
4.4  
6.0(2)  
All peripherals  
clocked, code  
3.7  
5.0  
Supply current in  
Run mode  
IDD(RUN)  
executed from RAM,  
HSE external clock  
(without resonator)  
f
CPU = 8 MHz  
2.2  
3.0(2)  
2.0(2)  
1.5  
(1)  
fCPU = 4 MHz  
fCPU = 2 MHz  
fCPU = 24 MHz  
fCPU = 16 MHz  
1.4  
mA  
1.0  
2.4  
3.1(2)  
1.65  
1.15  
0.90  
0.80  
2.5  
CPU stopped, all  
peripherals off, HSE  
external clock  
Supply current in  
Wait mode  
IDD(WFI)  
fCPU = 8 MHz  
1.9(2)  
1.6(2)  
1.5  
(1)  
fCPU = 4 MHz  
fCPU = 2 MHz  
External clock 16 MHz  
fCPU = 125 kHz  
fCPU scaled down,  
Supply current in all peripherals off,  
1.50  
1.50  
1.95  
(1)  
IDD(SLOW)  
Slow mode  
code executed from  
RAM  
LSI internal RC  
fCPU = 128 kHz  
1.80(2)  
1. The current due to I/O utilization is not taken into account in these values.  
2. Values not tested in production. Design guidelines only.  
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Electrical characteristics  
STM8AF52/62xx, STM8AF51/61xx  
Table 29. Total current consumption in Halt and Active-halt modes. General conditions for V  
DD  
applied. T = 40 °C to 55 °C unless otherwise stated  
A
Conditions  
Main  
Symbol  
Parameter  
Typ  
Max  
Unit  
voltage  
regulator  
(MVR)(1)  
Flash  
Clock source and  
temperature condition  
mode(2)  
Clocks stopped  
5
5
35(3)  
25  
Supply current in  
Halt mode  
Power-  
down  
IDD(H)  
Off  
On  
Off  
Clocks stopped,  
TA = 25 °C  
External clock 16 MHz  
fMASTER = 125 kHz  
900(3)  
Supply current in  
Active-halt mode  
with regulator on  
770  
Power-  
down  
µA  
LSI clock 128 kHz  
LSI clock 128 kHz  
150  
25  
230(3)  
42(3)  
IDD(AH)  
Supply current in  
Active-halt mode  
with regulator off  
Power-  
down  
LSI clock 128 kHz,  
TA = 25 °C  
25  
10  
30  
Wakeup time from  
Active-halt mode  
with regulator on  
On  
Off  
30(3)  
Operating  
mode  
tWU(AH)  
TA =40 to 150 °C  
µs  
Wakeup time from  
Active-halt mode  
with regulator off  
50  
80(3)  
1. Configured by the REGAH bit in the CLK_ICKR register.  
2. Configured by the AHALT bit in the FLASH_CR1 register.  
3. Data based on characterization results. Not tested in production.  
Current consumption for on-chip peripherals  
Table 30. Oscillator current consumption  
Symbol  
Parameter  
Conditions  
Typ  
Max(1)  
Unit  
Quartz or  
ceramic  
resonator,  
CL = 33 pF  
VDD = 5 V  
f
f
OSC = 24 MHz  
1
2.0(3)  
HSE oscillator current  
consumption(2)  
OSC = 16 MHz  
fOSC = 8 MHz  
0.6  
IDD(OSC)  
0.57  
mA  
Quartz or  
ceramic  
resonator,  
CL = 33 pF  
VDD = 3.3 V  
fOSC = 24 MHz  
fOSC = 16 MHz  
0.5  
1.0(3)  
HSE oscillator current  
consumption(2)  
0.25  
IDD(OSC)  
fOSC = 8 MHz  
0.18  
1. During startup, the oscillator current consumption may reach 6 mA.  
2. The supply current of the oscillator can be further optimized by selecting a high quality resonator with small Rm value. Refer  
to crystal manufacturer for more details  
3. Informative data.  
62/110  
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STM8AF52/62xx, STM8AF51/61xx  
Electrical characteristics  
Table 31. Programming current consumption  
Symbol  
Parameter  
Conditions  
Typ  
Max  
Unit  
VDD = 5 V, -40 °C to 150 °C, erasing  
and programming data or Flash  
program memory  
IDD(PROG) Programming current  
1.0  
1.7  
mA  
(1)  
Table 32. Typical peripheral current consumption V = 5.0 V  
DD  
Typ.  
= 2 MHz f  
Typ.  
Typ.  
= 16 MHz f =24 MHz  
master  
Symbol  
Parameter  
Unit  
f
master  
master  
IDD(TIM1)  
IDD(TIM2)  
IDD(TIM3)  
IDD(TIM4)  
TIM1 supply current(2)  
TIM2 supply current (2)  
TIM3 supply current(2)  
TIM4 supply current(2)  
0.03  
0.02  
0.01  
0.004  
0.03  
0.03  
0.01  
0.02  
0.06  
0.003  
0.22  
0.23  
0.12  
0.1  
0.34  
0.19  
0.16  
0.05  
0.15  
0.18  
0.07  
0.91  
0.40  
0.05  
2.4  
0.03  
0.09  
0.11  
0.04  
0.06  
0.30  
0.02  
1
IDD(USART) USART supply current(2)  
IDD(LINUART) LINUART supply current(2)  
mA  
IDD(SPI)  
IDD(I C)  
IDD(CAN)  
IDD(AWU)  
SPI supply current(2)  
I2C supply current(2)  
CAN supply current(3)  
AWU supply current(2)  
2
IDD(TOT_DIG) All digital peripherals on  
ADC supply current when  
IDD(ADC)  
0.93  
0.95  
0.96  
converting(4)  
1. Typical values not tested in production. Since the peripherals are powered by an internally regulated, constant digital  
supply voltage, the values are similar in the full supply voltage range.  
2. Data based on a differential IDD measurement between no peripheral clocked and a single active peripheral. This  
measurement does not include the pad toggling consumption.  
3. Data based on a differential IDD measurement between reset configuration (CAN disabled) and a permanent CAN data  
transmit sequence in loopback mode at 1 MHz. This measurement does not include the pad toggling consumption.  
4. Data based on a differential IDD measurement between reset configuration and continuous A/D conversions.  
Doc ID 14395 Rev 9  
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Electrical characteristics  
STM8AF52/62xx, STM8AF51/61xx  
Current consumption curves  
Figure 12 to Figure 17 show typical current consumption measured with code executing in  
RAM.  
Figure 12. Typ. I  
vs. V  
Figure 13. Typ. I  
vs. f  
DD(RUN)HSE  
DD  
DD(RUN)HSE CPU  
@f  
= 16 MHz, peripherals = on  
@ V = 5.0 V, peripherals = on  
CPU  
DD  
10  
10  
25°C  
85°C  
12 5°C  
25°C  
85°C  
12 5°C  
9
8
9
8
7
7
6
6
5
5
4
3
4
3
2
1
2
1
0
0
2.5  
3
3.5  
4
4.5  
5
5.5  
6
0
5
10  
15  
20  
25  
30  
VDD [V]  
fcpu [MHz]  
Figure 14. Typ. I  
vs. V  
Figure 15. Typ. I  
vs. V  
DD(RUN)HSI  
DD  
DD(WFI)HSE DD  
@ f  
= 16 MHz, peripherals = off  
@ f  
= 16 MHz, peripherals = on  
CPU  
CPU  
6
5
4
3
2
1
0
4
3
2
1
0
25°C  
85°C  
125°C  
25°C  
85°C  
125°C  
2.5  
3.5  
4.5  
5.5  
6.5  
2.5  
3.5  
4.5  
5.5  
6.5  
VDD [V]  
VDD [V]  
Figure 16. Typ. I  
vs. f  
Figure 17. Typ. I  
vs. V  
DD(WFI)HSE  
CPU  
DD(WFI)HSI DD  
@ V = 5.0 V, peripherals = on  
@ f  
= 16 MHz, peripherals = off  
DD  
CPU  
2.5  
2
6
5
4
1.5  
3
2
1
0
1
0.5  
0
25°C  
85°C  
12 5°C  
25°C  
85°C  
12 5°C  
2.5  
3
3.5  
4
4.5  
5
5.5  
6
0
5
10  
15  
20  
25  
30  
VDD [V]  
fcpu [MHz]  
64/110  
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STM8AF52/62xx, STM8AF51/61xx  
Electrical characteristics  
10.3.3  
External clock sources and timing characteristics  
HSE external clock  
An HSE clock can be generated by feeding an external clock signal of up to 24 MHz to the  
OSCIN pin.  
Clock characteristics are subject to general operating conditions for V and T .  
DD  
A
Table 33. HSE external clock characteristics  
Symbol  
Parameter  
Conditions  
Min  
Typ  
Max  
Unit  
User external clock source  
frequency  
fHSE_ext  
TA = -40 °C to 150 °C  
0(1)  
24  
MHz  
VHSEdHL Comparator hysteresis  
0.1 x VDD  
0.7 x VDD  
OSCIN high-level input pin  
voltage  
VHSEH  
VDD  
V
OSCIN low-level input pin  
voltage  
VHSEL  
VSS  
-1  
0.3 x VDD  
+1  
ILEAK_HSE OSCIN input leakage current  
VSS < VIN < VDD  
µA  
1. If CSS is used, the external clock must have a frequency above 500 kHz.  
Figure 18. HSE external clock source  
V
V
HSEH  
HSEL  
f
HSE  
External clock  
source  
OSCIN  
STM8A  
HSE crystal/ceramic resonator oscillator  
The HSE clock can be supplied using a crystal/ceramic resonator oscillator of up to 24 MHz.  
All the information given in this paragraph is based on characterization results with specified  
typical external components. 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  
(frequency, package, accuracy...).  
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Electrical characteristics  
STM8AF52/62xx, STM8AF51/61xx  
Table 34. HSE oscillator characteristics  
Symbol  
Parameter  
Feedback resistor  
Conditions  
Min  
Typ  
Max  
Unit  
RF  
5
220  
20  
kΩ  
pF  
(1)  
CL1/CL2  
gm  
Recommended load capacitance  
Oscillator trans conductance  
mA/V  
V
DD is  
(2)  
tSU(HSE)  
Startup time  
2.8  
ms  
stabilized  
1. The oscillator needs two load capacitors, CL1 and CL2, to act as load for the crystal. The total load capacitance (CLoad) is  
(CL1 * CL2)/(CL1 + CL2). If CL1 = CL2, Cload = CL1/2. Some oscillators have built-in load capacitors, CL1 and CL2  
.
2. This value is the startup time, measured from the moment it is enabled (by software) until a stabilized 24 MHz oscillation is  
reached. It can vary with the crystal type that is used.  
Figure 19. HSE oscillator circuit diagram  
f
to core  
HSE  
R
m
R
F
C
O
L
m
C
L1  
OSCIN  
C
m
g
m
Resonator  
Current control  
Resonator  
STM8A  
OSCOUT  
C
L2  
HSE oscillator critical gm formula  
The crystal characteristics have to be checked with the following formula:  
Equation 1  
g
m » gmcrit  
where g  
can be calculated with the crystal parameters as follows:  
mcrit  
Equation 2  
f
gmcrit = (2 × Π × HSE)2 × Rm(2Co + C)2  
R : Notional resistance (see crystal specification)  
m
L : Notional inductance (see crystal specification)  
m
C : Notional capacitance (see crystal specification)  
m
Co: Shunt capacitance (see crystal specification)  
C
= C = C: Grounded external capacitance  
L1  
L2  
66/110  
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STM8AF52/62xx, STM8AF51/61xx  
Electrical characteristics  
10.3.4  
Internal clock sources and timing characteristics  
Subject to general operating conditions for V and T .  
DD  
A
High-speed internal RC oscillator (HSI)  
Table 35. HSI oscillator characteristics  
Symbol  
Parameter  
Frequency  
Conditions  
Min  
Typ  
Max  
Unit  
fHSI  
16  
MHz  
Trimmed by the application  
for any VDD and TA  
conditions  
HSI oscillator user  
trimming accuracy  
-1  
1
ACCHS  
%
HSI oscillator accuracy  
(factory calibrated)  
VDD = 3.0 V VDD 5.5 V,  
-40 °C TA 150 °C  
-5  
5
tsu(HSI) HSI oscillator wakeup time  
2(1)  
µs  
1. Guaranteed by characterization, not tested in production  
Figure 20. Typical HSI frequency vs V  
DD  
3%  
2%  
-40°C  
25°C  
85°C  
125°C  
1%  
0%  
-1%  
-2%  
-3%  
2.5  
3
3.5  
4
4.5  
5
5.5  
6
VDD [V]  
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Electrical characteristics  
STM8AF52/62xx, STM8AF51/61xx  
Low-speed internal RC oscillator (LSI)  
Subject to general operating conditions for V and T .  
DD  
A
Table 36. LSI oscillator characteristics  
Symbol  
Parameter  
Conditions  
Min  
Typ  
Max  
Unit  
fLSI  
Frequency  
112  
128  
144  
7(1)  
kHz  
µs  
tsu(LSI) LSI oscillator wakeup time  
1. Data based on characterization results, not tested in production.  
Figure 21. Typical LSI frequency vs V  
DD  
3%  
2%  
1%  
25°C  
0%  
-1%  
-2%  
-3%  
2.5  
3
3.5  
4
4.5  
5
5.5  
6
VDD [V]  
68/110  
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STM8AF52/62xx, STM8AF51/61xx  
Electrical characteristics  
10.3.5  
Memory characteristics  
Flash program memory/data EEPROM memory  
General conditions: T = -40 °C to 150 °C.  
A
Table 37. Flash program memory/data EEPROM memory  
Symbol  
Parameter  
Conditions  
Min(1) Typ Max  
Unit  
f
CPU is 16 to 24 MHz  
with 1 ws  
Operating voltage  
(all modes, execution/write/erase)  
VDD  
3.0  
5.5  
fCPU is 0 to 16 MHz  
with 0 ws  
V
fCPU is 16 to 24 MHz  
with 1 ws  
fCPU is 0 to 16 MHz  
with 0 ws  
VDD  
Operating voltage (code execution)  
2.6  
6
5.5  
6.6  
Standard programming time  
(including erase) for byte/word/block  
(1 byte/4 bytes/128 bytes)  
tprog  
ms  
ms  
Fast programming time for 1 block  
(128 bytes)  
3
3
3.3  
3.3  
terase Erase time for 1 block (128 bytes)  
1. Guaranteed by characterization, not tested in production.  
Table 38. Flash program memory  
Symbol  
Parameter  
Condition  
Min  
Max  
Unit  
TWE  
Temperature for writing and erasing  
-40  
150  
°C  
Flash program memory endurance  
(erase/write cycles)(1)  
NWE  
TA = 25 °C  
1000  
cycles  
TA = 25 °C  
TA = 55 °C  
40  
20  
tRET  
Data retention time  
years  
1. The physical granularity of the memory is four bytes, so cycling is performed on four bytes even when a  
write/erase operation addresses a single byte.  
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Electrical characteristics  
STM8AF52/62xx, STM8AF51/61xx  
Table 39. Data memory  
Symbol  
Parameter  
Condition  
Min  
Max  
Unit  
TWE  
Temperature for writing and erasing  
-40  
150  
°C  
Data memory endurance(1)  
(erase/write cycles)  
TA = 25 °C  
300 k  
NWE  
cycles  
years  
TA = -40°C to 125 °C  
TA = 25 °C  
100 k(2)  
40(2)(3)  
20(2)(3)  
tRET  
Data retention time  
TA = 55 °C  
1. The physical granularity of the memory is four bytes, so cycling is performed on four bytes even when a  
write/erase operation addresses a single byte.  
2. More information on the relationship between data retention time and number of write/erase cycles is  
available in a separate technical document.  
3. Retention time for 256B of data memory after up to 1000 cycles at 125 °C.  
70/110  
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STM8AF52/62xx, STM8AF51/61xx  
Electrical characteristics  
10.3.6  
I/O port pin characteristics  
General characteristics  
Subject to general operating conditions for V and T unless otherwise specified. All  
DD  
A
unused pins must be kept at a fixed voltage, using the output mode of the I/O for example or  
an external pull-up or pull-down resistor.  
Table 40. I/O static characteristics  
Symbol  
Parameter  
Conditions  
Min  
Typ  
Max  
Unit  
VIL  
Low-level input voltage  
High-level input voltage  
-0.3 V  
0.3 x VDD  
VIH  
0.7 x VDD  
VDD + 0.3 V  
0.1 x  
VDD  
Vhys  
Hysteresis(1)  
Standard I/0, VDD = 5 V,  
I = 3 mA  
V
DD - 0.5 V  
VOH  
High-level output voltage  
Standard I/0, VDD = 3 V,  
I = 1.5 mA  
V
DD - 0.4 V  
High sink and true open  
drain I/0, VDD = 5 V  
I = 8 mA  
0.5  
0.6  
VOL  
Low-level output voltage  
Pull-up resistor  
Standard I/0, VDD = 5 V  
I = 3 mA  
V
Standard I/0, VDD = 3 V  
I = 1.5 mA  
35  
50  
0.4  
65  
Rpu  
VDD = 5 V, VIN = VSS  
kΩ  
Fast I/Os  
Load = 50 pF  
35(2)  
Standard and high sink I/Os  
Load = 50 pF  
125(2)  
20(2)  
50(2)  
1
Rise and fall time  
(10% - 90%)  
tR, tF  
ns  
Fast I/Os  
Load = 20 pF  
Standard and high sink I/Os  
Load = 20 pF  
Digital input pad leakage  
current  
Ilkg  
VSS VIN VDD  
µA  
nA  
VSS VIN VDD  
-40 °C < TA < 125 °C  
250  
500  
1(3)  
60  
Analog input pad leakage  
current  
Ilkg ana  
VSS VIN VDD  
-40 °C < TA < 150 °C  
Leakage current in  
adjacent I/O(3)  
Ilkg(inj)  
IDDIO  
Injection current 4 mA  
µA  
Total current on either  
Including injection currents  
mA  
VDDIO or VSSIO  
1. Hysteresis voltage between Schmitt trigger switching levels. Based on characterization results, not tested in production.  
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Electrical characteristics  
STM8AF52/62xx, STM8AF51/61xx  
2. Guaranteed by design.  
3. Data based on characterization results, not tested in production.  
Figure 22. Typical V and V vs V @ four temperatures  
IL  
IH  
DD  
6
5
4
3
2
1
0
-40°C  
25°C  
85°C  
125°C  
2.5  
3
3.5  
4
4.5  
5
5.5  
6
VDD [V]  
Figure 23. Typical pull-up resistance R vs V @ four temperatures  
PU  
DD  
60  
55  
50  
45  
40  
35  
30  
-40°C  
25°C  
85°C  
125°C  
2.5  
3
3.5  
4
4.5  
5
5.5  
6
VDD [V]  
72/110  
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STM8AF52/62xx, STM8AF51/61xx  
Electrical characteristics  
(1)  
Figure 24. Typical pull-up current I vs V @ four temperatures  
pu  
DD  
140  
120  
100  
80  
-40°C  
25°C  
85°C  
125°C  
60  
40  
20  
0
0
1
2
3
4
5
6
VDD [V]  
1. The pull-up is a pure resistor (slope goes through 0).  
Typical output level curves  
Figure 25 to Figure 34 show typical output level curves measured with output on a single pin.  
Figure 25. Typ. V @ V = 3.3 V (standard  
Figure 26. Typ. V @ V = 5.0 V (standard  
OL DD  
OL  
DD  
ports)  
ports)  
-40°C  
25°C  
85°C  
125°C  
-40°C  
25°C  
85°C  
125°C  
1.5  
1.25  
1
1.5  
1.25  
1
0.75  
0.5  
0.25  
0
0.75  
0.5  
0.25  
0
0
1
2
3
4
5
6
7
0
2
4
6
8
10  
12  
I
OL [mA]  
IOL [mA]  
Figure 27. Typ. V @ V = 3.3 V (true open Figure 28. Typ. V @ V = 5.0 V (true open  
OL  
DD  
OL  
DD  
drain ports)  
drain ports)  
-40°C  
25°C  
85°C  
125°C  
-40°C  
25°C  
85°C  
125°C  
2
1.75  
1.5  
1.25  
1
2
1.75  
1.5  
1.25  
1
0.75  
0.5  
0.25  
0
0.75  
0.5  
0.25  
0
0
2
4
6
8
10  
12  
14  
0
5
10  
15  
20  
25  
IOL [mA]  
IOL [mA]  
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Electrical characteristics  
STM8AF52/62xx, STM8AF51/61xx  
Figure 29. Typ. V @ V = 3.3 V (high sink  
Figure 30. Typ. V @ V = 5.0 V (high sink  
OL DD  
OL  
DD  
ports)  
ports)  
-40°C  
25°C  
85°C  
125°C  
-40°C  
25°C  
85°C  
125°C  
1.5  
1.25  
1
1.5  
1.25  
1
0.75  
0.5  
0.25  
0
0.75  
0.5  
0.25  
0
0
2
4
6
8
10  
12  
14  
0
5
10  
15  
20  
25  
IOL [mA]  
IOL [mA]  
Figure 31. Typ. V  
V
@ V = 3.3 V  
Figure 32. Typ. V  
V
@ V = 5.0 V  
DD - OH  
DD  
DD - OH DD  
(standard ports)  
(standard ports)  
-40°C  
25°C  
85°C  
125°C  
-40°C  
25°C  
85°C  
125°C  
2
1.75  
1.5  
1.25  
1
2
1.75  
1.5  
1.25  
1
0.75  
0.5  
0.25  
0
0.75  
0.5  
0.25  
0
0
1
2
3
4
5
6
7
0
2
4
6
8
10  
12  
IOH [mA]  
IOH [mA]  
Figure 33. Typ. V  
V
@ V = 3.3 V (high Figure 34. Typ. V  
V
@ V = 5.0 V (high  
DD - OH  
DD  
DD - OH DD  
sink ports)  
sink ports)  
-40°C  
25°C  
85°C  
125°C  
-40°C  
25°C  
85°C  
125°C  
2
1.75  
1.5  
1.25  
1
2
1.75  
1.5  
1.25  
1
0.75  
0.5  
0.25  
0
0.75  
0.5  
0.25  
0
0
2
4
6
8
10  
12  
14  
0
5
10  
15  
20  
25  
IOH [mA]  
IOH [mA]  
74/110  
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STM8AF52/62xx, STM8AF51/61xx  
Electrical characteristics  
10.3.7  
Reset pin characteristics  
Subject to general operating conditions for V and T unless otherwise specified.  
DD  
A
Table 41. NRST pin characteristics  
Symbol Parameter  
Conditions  
Min  
Typ  
Max  
Unit  
VIL(NRST) NRST low-level input voltage(1)  
VIH(NRST) NRST high-level input voltage(1)  
VSS  
40  
0.3 x VDD  
VDD  
0.7 x VDD  
VOL(NRST) NRST low-level output voltage(1) IOL = 3 mA  
0.6  
V
RPU(NRST) NRST pull-up resistor  
30  
85  
60  
kΩ  
ns  
tIFP  
NRST input filtered pulse(1)  
315  
NRST Input not filtered pulse  
duration(2)  
tIFP(NRST)  
500  
ns  
1. Data based on characterization results, not tested in production.  
2. Data guaranteed by design, not tested in production.  
Figure 35. Typical NRST V and V vs V @ four temperatures  
IL  
IH  
DD  
-40°C  
6
5
4
3
2
1
0
25°C  
85°C  
125°C  
2.5  
3
3.5  
4
4.5  
5
5.5  
6
VDD [V]  
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Electrical characteristics  
STM8AF52/62xx, STM8AF51/61xx  
Figure 36. Typical NRST pull-up resistance R vs V  
PU  
DD  
-40°C  
25°C  
85°C  
125°C  
60  
55  
50  
45  
40  
35  
30  
2.5  
3
3.5  
4
4.5  
5
5.5  
6
VDD [V]  
Figure 37. Typical NRST pull-up current I vs V  
pu  
DD  
140  
120  
100  
80  
60  
-40°C  
25°C  
85°C  
125°C  
40  
20  
0
0
1
2
3
4
5
6
VDD [V]  
The reset network shown in Figure 38 protects the device against parasitic resets. The user  
must ensure that the level on the NRST pin can go below V max (see Table 41:  
IL(NRST)  
NRST pin characteristics), otherwise the reset is not taken into account internally.  
For power consumption sensitive applications, the external reset capacitor value can be  
reduced to limit the charge/discharge current. If NRST signal is used to reset external  
circuitry, attention must be taken to the charge/discharge time of the external capacitor to  
fulfill the external devices reset timing conditions. Minimum recommended capacity is 10 nF.  
76/110  
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STM8AF52/62xx, STM8AF51/61xx  
Figure 38. Recommended reset pin protection  
Electrical characteristics  
STM8A  
VDD  
RPU  
External  
reset  
NRST  
Internal reset  
Filter  
circuit  
(optional)  
0.1µF  
10.3.8  
TIM 1, 2, 3, and 4 electrical specifications  
Subject to general operating conditions for V , f  
and T .  
A
DD MASTER  
Table 42. TIM 1, 2, 3, and 4 electrical specifications  
Symbol  
Parameter  
Conditions  
Min  
Typ  
Max  
Unit  
fEXT  
Timer external clock frequency(1)  
24  
MHz  
1. Not tested in production.  
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Electrical characteristics  
STM8AF52/62xx, STM8AF51/61xx  
SPI interface  
10.3.9  
Unless otherwise specified, the parameters given in Table 43 are derived from tests  
performed under ambient temperature, f frequency, and V supply voltage  
MASTER  
DD  
conditions. t  
= 1/f  
.
MASTER  
MASTER  
Refer to I/O port characteristics for more details on the input/output alternate function  
characteristics (NSS, SCK, MOSI, MISO).  
Table 43. SPI characteristics  
Symbol  
Parameter  
Conditions  
Min  
Max  
Unit  
Master mode  
Slave mode  
0
0
0
10  
fSCK  
1/tc(SCK)  
SPI clock frequency  
VDD < 4.5 V  
VDD = 4.5 V to 5.5 V  
6(1)  
8(1)  
MHz  
tr(SCK)  
tf(SCK)  
SPI clock rise and fall time Capacitive load: C = 30 pF  
25(2)  
(3)  
tsu(NSS)  
NSS setup time  
NSS hold time  
Slave mode  
Slave mode  
4 * tMASTER  
70  
(3)  
th(NSS)  
(3)  
(3)  
tw(SCKH)  
tw(SCKL)  
tw(SCKH)  
tw(SCKL)  
SCK high and low time  
Data input setup time  
Master mode  
tSCK/2 - 15  
tSCK/2 + 15  
(3)  
(3)  
(3)  
Master mode  
Slave mode  
Master mode  
Slave mode  
Slave mode  
Slave mode  
5
tsu(MI)  
tsu(SI)  
(3)  
5
(3)  
7
th(MI)  
th(SI)  
ns  
Data input hold time  
(3)  
10  
25  
31  
12  
(3)(4)  
ta(SO)  
Data output access time  
Data output disable time  
3* tMASTER  
(3)(5)  
tdis(SO)  
VDD < 4.5 V  
75  
53  
30  
Slave mode  
(after enable edge)  
(3)  
(3)  
tv(SO)  
Data output valid time  
Data output valid time  
Data output hold time  
V
DD = 4.5 V to 5.5 V  
tv(MO)  
Master mode (after enable edge)  
Slave mode (after enable edge)  
Master mode (after enable edge)  
(3)  
th(SO)  
(3)  
th(MO)  
1. fSCK < fMASTER/2.  
2. The pad has to be configured accordingly (fast mode).  
3. Values based on design simulation and/or characterization results, and not tested in production.  
4. Min time is for the minimum time to drive the output and the max time is for the maximum time to validate the data.  
5. Min time is for the minimum time to invalidate the output and the max time is for the maximum time to put the data in Hi-Z.  
78/110  
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STM8AF52/62xx, STM8AF51/61xx  
Electrical characteristics  
Figure 39. SPI timing diagram in slave mode and with CPHA = 0  
NSS input  
t
t
t
SU(NSS)  
c(SCK)  
h(NSS)  
CPHA=0  
CPOL=0  
t
t
w(SCKH)  
w(SCKL)  
CPHA=0  
CPOL=1  
t
t
t
t
t
dis(SO)  
v(SO)  
r(SCK)  
f(SCK)  
h(SO)  
t
a(SO)  
MISO  
OUT PUT  
MSB O UT  
BI T6 OUT  
BIT1 IN  
LSB OUT  
t
su(SI)  
MOSI  
M SB IN  
LSB IN  
INPUT  
t
h(SI)  
ai14134  
1. Measurement points are at CMOS levels: 0.3 VDD and 0.7 VDD  
.
Figure 40. SPI timing diagram in slave mode and with CPHA = 1  
NSS input  
t
t
t
SU(NSS)  
t
c(SCK)  
h(NSS)  
CPHA=1  
CPOL=0  
w(SCKH)  
CPHA=1  
CPOL=1  
t
w(SCKL)  
t
t
r(SCK)  
f(SCK)  
t
t
t
v(SO)  
h(SO)  
dis(SO)  
t
a(SO)  
MISO  
OUT PUT  
MSB O UT  
BI T6 OUT  
LSB OUT  
t
t
su(SI)  
h(SI)  
MOSI  
M SB IN  
BIT1 IN  
LSB IN  
INPUT  
ai14135  
1. Measurement points are at CMOS levels: 0.3 VDD and 0.7 VDD  
.
Doc ID 14395 Rev 9  
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Electrical characteristics  
STM8AF52/62xx, STM8AF51/61xx  
Figure 41. SPI timing diagram - master mode  
(IGH  
.33 INPUT  
T
Cꢆ3#+ꢇ  
#0(!ꢅ  
#0/,ꢄꢅ  
#0(!ꢅ  
#0/,ꢄꢀ  
#0(!ꢀ  
#0/,ꢄꢅ  
#0(!ꢀ  
#0/,ꢄꢀ  
T
T
T
T
Wꢆ3#+(ꢇ  
Wꢆ3#+,ꢇ  
Rꢆ3#+ꢇ  
Fꢆ3#+ꢇ  
T
SUꢆ-)ꢇ  
-)3/  
).054  
-3").  
")4ꢃ ).  
,3" ).  
T
Hꢆ-)ꢇ  
-/3)  
- 3" /54  
")4ꢀ /54  
,3" /54  
/5454  
T
T
Vꢆ-/ꢇ  
Hꢆ-/ꢇ  
AIꢀꢁꢀꢂꢃ  
1. Measurement points are at CMOS levels: 0.3 VDD and 0.7 VDD  
.
80/110  
Doc ID 14395 Rev 9  
 
STM8AF52/62xx, STM8AF51/61xx  
Electrical characteristics  
2
10.3.10 I C interface characteristics  
2
Table 44. I C characteristics  
Standard mode I2C Fast mode I2C(1)  
Symbol  
Parameter  
Unit  
Min(2)  
Max(2)  
Min(2) Max(2)  
tw(SCLL) SCL clock low time  
tw(SCLH) SCL clock high time  
tsu(SDA) SDA setup time  
4.7  
4.0  
1.3  
0.6  
µs  
250  
0(3)  
100  
0(4)  
th(SDA)  
SDA data hold time  
900(3)  
tr(SDA)  
tr(SCL)  
SDA and SCL rise time  
(VDD 3 V to 5.5 V)  
ns  
1000  
300  
300  
300  
tf(SDA)  
tf(SCL)  
SDA and SCL fall time  
(VDD 3 V to 5.5 V)  
th(STA)  
START condition hold time  
4.0  
4.7  
4.0  
0.6  
0.6  
0.6  
µs  
tsu(STA) Repeated START condition setup time  
tsu(STO) STOP condition setup time  
µs  
µs  
pF  
STOP to START condition time  
tw(STO:STA)  
(bus free)  
4.7  
1.3  
Cb  
Capacitive load for each bus line  
400  
400  
1. fMASTER, must be at least 8 MHz to achieve max fast I2C speed (400 kHz)  
Data based on standard I2C protocol requirement, not tested in production  
2.  
The maximum hold time of the start condition has only to be met if the interface does not stretch the low  
time  
3.  
4.  
The device must internally provide a hold time of at least 300 ns for the SDA signal in order to bridge the  
undefined region of the falling edge of SCL  
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Electrical characteristics  
STM8AF52/62xx, STM8AF51/61xx  
10.3.11 10-bit ADC characteristics  
Subject to general operating conditions for V  
specified.  
, f  
and T unless otherwise  
DDA MASTER  
A
Table 45. ADC characteristics  
Symbol  
Parameter  
Conditions  
Min  
111 kHz  
3
Typ  
Max  
Unit  
fADC  
ADC clock frequency  
4 MHz kHz/MHz  
VDDA Analog supply  
5.5  
VREF+ Positive reference voltage  
VREF- Negative reference voltage  
2.75  
VDDA  
VSSA  
VSSA  
0.5  
V
VDDA  
Conversion voltage range(1)  
Devices with  
external VREF+  
VAIN  
/
VREF-  
VREF+  
VREF- pins  
Csamp Internal sample and hold capacitor  
1.5  
0.75  
7
3
pF  
µs  
fADC = 2 MHz  
Sampling time  
(3 x 1/fADC  
(1)  
tS  
)
f
f
ADC = 4 MHz  
ADC = 2 MHz  
tSTAB Wakeup time from standby  
fADC = 4 MHz  
fADC = 2 MHz  
3.5  
7
Total conversion time including  
tCONV sampling time  
fADC = 4 MHz  
3.5  
(14 x 1/fADC  
)
Rswitch Equivalent switch resistance  
30  
kΩ  
1. During the sample time, the sampling capacitance, Csamp (3 pF typ), can be charged/discharged by the  
external source. The internal resistance of the analog source must allow the capacitance to reach its final  
voltage level within tS. After the end of the sample time tS, changes of the analog input voltage have no  
effect on the conversion result.  
Figure 42. Typical application with ADC  
VDD  
STM8A  
VT  
Rswitch  
0.6V  
RAIN  
AINx  
10-bit A/D  
conversion  
VAIN  
Ts  
CAIN  
VT  
0.6V  
IL  
Csamp  
1. Legend: RAIN = external resistance, CAIN = capacitors, Csamp = internal sample and hold capacitor.  
82/110  
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STM8AF52/62xx, STM8AF51/61xx  
Electrical characteristics  
Table 46. ADC accuracy for V  
= 5 V  
DDA  
Symbol  
Parameter  
Conditions  
Typ  
Max(1)  
Unit  
|ET|  
|EO|  
|EG|  
|ED|  
|EL|  
|ET|  
|EO|  
|EG|  
|ED|  
|EL|  
Total unadjusted error(2)  
Offset error(2)  
1.4  
0.8  
3(3)  
3
Gain error(2)  
fADC = 2 MHz  
0.1  
2
Differential linearity error(2)  
Integral linearity error(2)  
Total unadjusted error(2)  
Offset error(2)  
0.9  
1
0.7  
1.5  
4(4)  
4(4)  
3(4)  
2(4)  
1.5(4)  
LSB  
1.9(4)  
1.3(4)  
0.6(4)  
1.5(4)  
1.2(4)  
Gain error(2)  
fADC = 4 MHz  
Differential linearity error(2)  
Integral linearity error(2)  
1. Max value is based on characterization, not tested in production.  
2. ADC accuracy vs. injection current: Any positive or negative injection current within the limits specified for  
IINJ(PIN) and ΣIINJ(PIN) in Section 10.3.6 does not affect the ADC accuracy.  
3. TUE 2LSB can be reached on specific salestypes on the whole temperature range.  
4. Target values.  
Figure 43. ADC accuracy characteristics  
EG  
1023  
V
V  
1022  
1021  
DDA  
SSA  
1LSB  
= ----------------------------------------  
IDEAL  
1024  
(2)  
ET  
(3)  
7
6
5
4
3
2
1
(1)  
EO  
EL  
ED  
1 LSBIDEAL  
0
1
2
3
4
5
6
7
1021102210231024  
VSSA  
V
DDA  
1. Example of an actual transfer curve  
2. The ideal transfer curve  
3. End point correlation line  
ET = Total unadjusted error: Maximum deviation between the actual and the ideal transfer curves.  
E
E
E
O = Offset error: Deviation between the first actual transition and the first ideal one.  
G = Gain error: Deviation between the last ideal transition and the last actual one.  
D = Differential linearity error: Maximum deviation between actual steps and the ideal one.  
EL = Integral linearity error: Maximum deviation between any actual transition and the end point correlation  
line.  
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Electrical characteristics  
STM8AF52/62xx, STM8AF51/61xx  
10.3.12 EMC characteristics  
Susceptibility tests are performed on a sample basis during product characterization.  
Functional EMS (electromagnetic susceptibility)  
While executing a simple application (toggling 2 LEDs through I/O ports), the product is  
stressed by two electromagnetic events until a failure occurs (indicated by the LEDs).  
ESD: Electrostatic discharge (positive and negative) is applied on all pins of the device  
until a functional disturbance occurs. This test conforms with the IEC 1000-4-2  
standard.  
FTB: A burst of fast transient voltage (positive and negative) is applied to V and V  
DD  
SS  
through a 100 pF capacitor, until a functional disturbance occurs. This test conforms  
with the IEC 1000-4-4 standard.  
A device reset allows normal operations to be resumed. The test results are given in the  
table below based on the EMS levels and classes defined in application note AN1709.  
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  
recovered by applying a low state on the NRST pin or the oscillator pins for 1 second.  
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).  
Table 47. EMS data  
Symbol  
Parameter  
Conditions  
Level/class  
VDD = 3.3 V, TA= 25 °C,  
fMASTER = 16 MHz (HSI clock),  
Conforms to IEC 1000-4-2  
Voltage limits to be applied on any I/O pin  
to induce a functional disturbance  
VFESD  
3B  
Fast transient voltage burst limits to be  
VEFTB applied through 100 pF on VDD and VSS  
pins to induce a functional disturbance  
VDD= 3.3 V, TA= 25 °C,  
fMASTER = 16 MHz (HSI clock),  
Conforms to IEC 1000-4-4  
4A  
84/110  
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STM8AF52/62xx, STM8AF51/61xx  
Electrical characteristics  
Electromagnetic interference (EMI)  
Emission tests conform to the SAE J 1752/3 standard for test software, board layout and pin  
loading.  
Table 48. EMI data  
Conditions  
(1)  
Max fCPU  
Symbol  
Parameter  
Unit  
General  
Monitored  
8
16  
24  
conditions  
frequency band  
MHz MHz MHz  
0.1 MHz to 30 MHz  
30 MHz to 130 MHz  
130 MHz to 1 GHz  
15  
18  
-1  
2
17  
22  
3
22  
16  
5
VDD = 5 V,  
TA = 25 °C,  
Peak level  
SEMI  
LQFP80 package  
conforming to SAE  
J 1752/3  
dBµV  
SAE EMI level  
2.5  
2.5  
1. Data based on characterization results, not tested in production.  
Absolute maximum ratings (electrical sensitivity)  
Based on two different tests (ESD and LU) using specific measurement methods, the  
product is stressed to determine its performance in terms of electrical sensitivity. For more  
details, refer to the application note AN1181.  
Electrostatic discharge (ESD)  
Electrostatic discharges (3 positive then 3 negative pulses 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 pin). This test  
conforms to the JESD22-A114A/A115A standard. For more details, refer to the application  
note AN1181.  
Table 49. ESD absolute maximum ratings  
Maximum Uni  
Symbol  
Ratings  
Conditions  
Class  
value(1)  
t
Electrostatic discharge voltage  
(human body model)  
TA = 25 °C, conforming to  
VESD(HBM)  
VESD(CDM)  
VESD(MM)  
3A  
3
4000  
JESD22-A114  
Electrostatic discharge voltage  
(charge device model)  
TA = 25 °C, conforming to  
500  
200  
V
JESD22-C101  
Electrostatic discharge voltage  
(charge device model)  
TA = 25 °C, conforming to  
B
JESD22-A115  
1. Data based on characterization results, not tested in production  
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Electrical characteristics  
Static latch-up  
STM8AF52/62xx, STM8AF51/61xx  
Two complementary static tests are required on 10 parts to assess the latch-up  
performance.  
A supply overvoltage (applied to each power supply pin) and  
A current injection (applied to each input, output and configurable I/O pin) are  
performed on each sample.  
This test conforms to the EIA/JESD 78 IC latch-up standard. For more details, refer to the  
application note AN1181.  
Table 50. Electrical sensitivities  
Symbol  
Parameter  
Conditions  
Class(1)  
TA = 25 °C  
TA = 85 °C  
TA = 125 °C  
TA = 150 °C  
LU  
Static latch-up class  
A
1. Class description: A Class is an STMicroelectronics internal specification. All its limits are higher than the  
JEDEC specifications, that means when a device belongs to class A it exceeds the JEDEC standard. B  
class strictly covers all the JEDEC criteria (international standard).  
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STM8AF52/62xx, STM8AF51/61xx  
Electrical characteristics  
10.4  
Thermal characteristics  
In case the maximum chip junction temperature (T  
) specified in Table 26: General  
Jmax  
operating conditions is exceeded, the functionality of the device cannot be guaranteed.  
T
, in degrees Celsius, may be calculated using the following equation:  
Jmax  
Equation 3  
T
= T  
+ (P  
x Θ )  
Dmax JA  
Jmax  
Amax  
where:  
T
is the maximum ambient temperature in °C  
Amax  
Θ
is the package junction-to-ambient thermal resistance in ° C/W  
JA  
P
is the sum of P  
and P  
(P  
= P  
+ P  
)
I/Omax  
Dmax  
INTmax  
I/Omax  
Dmax  
INTmax  
P
is the product of I and V , expressed in Watts. This is the maximum chip  
INTmax  
DD  
DD  
internal power.  
P
represents the maximum power dissipation on output pins  
I/Omax  
where:  
Equation 4  
P
= Σ (V * I ) + Σ((V - V ) * I  
)
OH  
I/Omax  
OL  
OL  
DD  
OH  
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.  
(1)  
Table 51. Thermal characteristics  
Symbol  
Parameter  
Value  
Unit  
Thermal resistance junction-ambient  
LQFP 80 - 14 x 14 mm  
Θ
38  
°C/W  
JA  
Thermal resistance junction-ambient  
LQFP 64 - 10 x 10 mm  
Θ
46  
57  
59  
25  
°C/W  
°C/W  
°C/W  
°C/W  
JA  
Thermal resistance junction-ambient  
LQFP 48 - 7 x 7 mm  
Θ
JA  
Thermal resistance junction-ambient  
LQFP 32 - 7 x 7 mm  
Θ
JA  
Thermal resistance junction-ambient  
VFQFPN 32 - 5 x 5 mm  
Θ
JA  
1. Thermal resistances are based on JEDEC JESD51-2 with 4-layer PCB in a natural convection  
environment.  
10.4.1  
Reference document  
JESD51-2 integrated circuits thermal test method environment conditions - natural  
convection (still air). Available from www.jedec.org.  
Doc ID 14395 Rev 9  
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Electrical characteristics  
STM8AF52/62xx, STM8AF51/61xx  
10.4.2  
Selecting the product temperature range  
When ordering the microcontroller, the temperature range is specified in the order code (see  
Figure 52: Ordering information scheme(1) on page 98).  
The following example shows how to calculate the temperature range needed for a given  
application.  
Assuming the following application conditions:  
Maximum ambient temperature T  
= 82 °C (measured according to JESD51-2)  
Amax  
I
= 8 mA  
DDmax  
V
= 5 V  
DD  
maximum 20 I/Os used at the same time in output at low-level with I = 8 mA  
OL  
V
= 0.4 V  
OL  
Equation 5  
P
= 8 mA x 5 V = 400 mW  
INTmax  
Equation 6  
P
= 20 x 8 mA x 0.4 V = 64 mW  
64 mW:  
IOmax  
This gives:  
P
= 400 mW and P  
INTmax  
IOmax  
Equation 7  
P
= 400 mW + 64 mW  
Dmax  
Thus:  
P
= 464 mW.  
Dmax  
Using the values obtained in Table 51: Thermal characteristics on page 87 T  
is  
Jmax  
calculated as follows:  
For LQFP64 46 °C/W  
Equation 8  
T
= 82 °C + (46 °C/W x 464 mW) = 82 °C + 21 °C = 103 ° C  
jmax  
This is within the range of the suffix B version parts (-40 °C < T < 105 ° C).  
j
Parts must be ordered at least with the temperature range suffix B.  
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STM8AF52/62xx, STM8AF51/61xx  
Package characteristics  
11  
Package characteristics  
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.  
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Package characteristics  
STM8AF52/62xx, STM8AF51/61xx  
11.1  
Package mechanical data  
Figure 44. LQFP 80-pin low profile quad flat package (14 x 14)  
D
ccc  
C
D1  
D3  
A
A2  
41  
60  
40  
61  
b
L1  
E3 E1  
E
L
A1  
K
80  
Pin 1  
identification  
1
c
1S_ME  
Table 52. LQFP 80-pin low profile quad flat package mechanical data  
mm  
Typ  
inches(1)  
Dim.  
Min  
Max  
Min  
Typ  
Max  
A
A1  
A2  
b
0.050  
1.350  
0.220  
0.090  
15.800  
13.800  
1.600  
0.150  
1.450  
0.380  
0.200  
16.200  
14.200  
0.0020  
0.0531  
0.0087  
0.0035  
0.6220  
0.5433  
0.0630  
0.0059  
0.0571  
0.0150  
0.0079  
0.6378  
0.5591  
1.400  
0.320  
0.0551  
0.0126  
c
D
16.000  
14.000  
12.350  
16.000  
14.000  
12.350  
0.650  
0.600  
1.000  
0.6299  
0.5512  
0.4862  
0.6299  
0.5512  
0.4862  
0.0256  
0.0236  
0.0394  
D1  
D3  
E
15.800  
13.800  
16.200  
14.200  
0.6220  
0.5433  
0.6378  
0.5591  
E1  
E3  
e
L
0.450  
0.750  
0.0177  
0.0295  
L1  
ccc  
k
0.100  
7°  
0.0039  
7°  
0°  
3.5°  
0°  
3.5°  
1. Values in inches are converted from mm and rounded to 4 decimal digits  
90/110  
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STM8AF52/62xx, STM8AF51/61xx  
Package characteristics  
Figure 45. LQFP 64-pin low profile quad flat package (10 x 10)  
D
ccc  
C
D1  
D3  
A
A2  
33  
48  
32  
49  
b
L1  
E3  
E1 E  
L
A1  
K
64  
17  
Pin 1  
identification  
1
16  
c
5W_ME  
Table 53. LQFP 64-pin low profile quad flat package mechanical data  
mm  
Typ  
inches(1)  
Dim.  
Min  
Max  
Min  
Typ  
Max  
A
A1  
A2  
b
0.050  
1.350  
0.170  
0.090  
11.800  
9.800  
1.600  
0.150  
1.450  
0.270  
0.200  
12.200  
10.200  
0.0020  
0.0531  
0.0067  
0.0035  
0.4646  
0.3858  
0.0630  
0.0059  
0.0571  
0.0106  
0.0079  
0.4803  
0.4016  
1.400  
0.220  
0.0551  
0.0087  
c
D
12.000  
10.000  
7.500  
12.000  
10.000  
7.500  
0.500  
3.5°  
0.4724  
0.3937  
0.2953  
0.4724  
0.3937  
0.2953  
0.0197  
3.5°  
D1  
D3  
E
11.800  
9.800  
12.200  
10.200  
0.4646  
0.3858  
0.4803  
0.4016  
E1  
E3  
e
θ
0°  
7°  
0°  
7°  
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  
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Package characteristics  
Figure 46. LQFP 64-pin recommended footprint  
STM8AF52/62xx, STM8AF51/61xx  
ꢁꢈ  
ꢂꢂ  
ꢅꢌꢂ  
ꢁꢊ  
ꢂꢉ  
ꢅꢌꢍ  
ꢀꢉꢌꢋ  
ꢀꢅꢌꢂ  
ꢀꢅꢌꢂ  
ꢃꢁ  
ꢀꢋ  
ꢀꢌꢉ  
ꢀꢃ  
ꢋꢌꢈ  
ꢀꢉꢌꢋ  
ꢍ7?&0  
1. Drawing is not to scale. Dimensions are in millimeters.  
92/110  
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STM8AF52/62xx, STM8AF51/61xx  
Package characteristics  
Figure 47. LQFP 48-pin low profile quad flat package (7 x 7)  
D
ccc  
C
D1  
D3  
A
A2  
25  
36  
24  
37  
L1  
b
E3  
E1 E  
48  
L
13  
A1  
K
Pin 1  
identification  
1
12  
c
5B_ME  
Table 54. LQFP 48-pin low profile quad flat package mechanical data  
mm  
Typ  
inches(1)  
Dim.  
Min  
Max  
Min  
Typ  
Max  
A
A1  
A2  
b
0.050  
1.350  
0.170  
0.090  
8.800  
6.800  
1.600  
0.150  
1.450  
0.270  
0.200  
9.200  
7.200  
0.0020  
0.0531  
0.0067  
0.0035  
0.3465  
0.2677  
0.0630  
0.0059  
0.0571  
0.0106  
0.0079  
0.3622  
0.2835  
1.400  
0.220  
0.0551  
0.0087  
c
D
9.000  
7.000  
5.500  
9.000  
7.000  
5.500  
0.500  
3.5°  
0.3543  
0.2756  
0.2165  
0.3543  
0.2756  
0.2165  
0.0197  
3.5°  
D1  
D3  
E
8.800  
6.800  
9.200  
7.200  
0.3465  
0.2677  
0.3622  
0.2835  
E1  
E3  
e
θ
0°  
7°  
0°  
7°  
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  
Doc ID 14395 Rev 9  
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Package characteristics  
Figure 48. LQFP 48-pin recommended footprint  
STM8AF52/62xx, STM8AF51/61xx  
ꢅꢌꢍꢅ  
ꢀꢌꢉꢅ  
ꢅꢌꢂꢅ  
ꢉꢍ  
ꢂꢃ  
ꢂꢋ  
ꢉꢁ  
ꢅꢌꢉꢅ  
ꢋꢌꢂꢅ  
ꢊꢌꢋꢅ ꢍꢌꢈꢅ  
ꢋꢌꢂꢅ  
ꢁꢈ  
ꢀꢂ  
ꢀꢉ  
ꢀꢌꢉꢅ  
ꢍꢌꢈꢅ  
ꢊꢌꢋꢅ  
ꢍ"?&0  
1. Drawing is not to scale. Dimensions are in millimeters.  
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STM8AF52/62xx, STM8AF51/61xx  
Figure 49. LQFP 32-pin low profile quad flat package (7 x 7)  
Package characteristics  
ccc  
C
D
D1  
D3  
A
A2  
24  
17  
16  
25  
32  
L1  
b
E3  
E1 E  
9
L
Pin 1  
identification  
A1  
K
1
8
c
5V_ME  
Table 55. LQFP 32-pin low profile quad flat package mechanical data  
mm  
Typ  
inches(1)  
Dim.  
Min  
Max  
Min  
Typ  
Max  
A
A1  
A2  
b
0.050  
1.350  
0.300  
0.090  
8.800  
6.800  
1.600  
0.150  
1.450  
0.450  
0.200  
9.200  
7.200  
0.0020  
0.0531  
0.0118  
0.0035  
0.3465  
0.2677  
0.0630  
0.0059  
0.0571  
0.0177  
0.0079  
0.3622  
0.2835  
1.400  
0.370  
0.0551  
0.0146  
c
D
9.000  
7.000  
5.600  
9.000  
7.000  
5.600  
0.800  
3.5°  
0.3543  
0.2756  
0.2205  
0.3543  
0.2756  
0.2205  
0.0315  
3.5°  
D1  
D3  
E
8.800  
6.800  
9.200  
7.200  
0.3465  
0.2677  
0.3622  
0.2835  
E1  
E3  
e
θ
0°  
7°  
0°  
7°  
L
0.450  
0.600  
1.000  
0.750  
0.0177  
0.0236  
0.0394  
0.0295  
L1  
ccc  
0.100  
0.0039  
1. Values in inches are converted from mm and rounded to 4 decimal digits  
Doc ID 14395 Rev 9  
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Package characteristics  
Figure 50. LQFP 32-pin recommended footprint  
STM8AF52/62xx, STM8AF51/61xx  
ꢊꢌꢁꢅ  
ꢋꢌꢋꢅ  
ꢅꢌꢍꢁ  
ꢊꢌꢁꢅ  
ꢅꢌꢈꢅ  
ꢍ6?&0  
1. Drawing is not to scale. Dimensions are in millimeters.  
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STM8AF52/62xx, STM8AF51/61xx  
Package characteristics  
Figure 51. VFQFPN 32-lead very thin fine pitch quad flat no-lead package (5 x 5)  
Seating plane  
C
ddd  
C
A
A1  
A3  
D
e
16  
9
17  
8
b
E
E2  
24  
1
L
32  
Pin # 1 ID  
R = 0.30  
D2  
L
Bottom view  
42_ME  
Table 56. VFQFPN 32-lead very thin fine pitch quad flat no-lead package  
mechanical data  
mm  
Typ  
inches(1)  
Dim.  
Min  
Max  
Min  
Typ  
Max  
A
A1  
A3  
b
0.800  
0.000  
0.900  
0.020  
0.200  
0.250  
5.000  
3.450  
5.000  
3.450  
0.500  
0.400  
1.000  
0.050  
0.0315  
0.000  
0.0354  
0.0008  
0.0079  
0.0098  
0.1969  
0.1358  
0.1969  
0.1358  
0.0197  
0.0157  
0.0394  
0.0020  
0.180  
4.850  
3.400  
4.850  
3.400  
0.300  
5.150  
3.500  
5.150  
3.500  
0.0071  
0.1909  
0.1339  
0.1909  
0.1339  
0.0118  
0.2028  
0.1378  
0.2028  
0.1378  
D
D2  
E
E2  
e
L
0.300  
0.500  
0.080  
0.0118  
0.0197  
0.0031  
ddd  
1. Values in inches are converted from mm and rounded to 4 decimal digits  
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Ordering information  
STM8AF52/62xx, STM8AF51/61xx  
12  
Ordering information  
(1)  
Figure 52. Ordering information scheme  
XXX(2)  
Y
Example:  
STM8A  
F
62  
A
A
T
D
Product class  
8-bit automotive microcontroller  
Program memory type  
F = Flash + EEPROM  
P = FASTROM  
H = Flash no EEPROM(3)  
Device family  
51 = Silicon rev X, CAN/LIN(3)  
61 = Silicon rev X, LIN only(3  
52 = Silicon rev U and rev T, CAN/LIN  
62 = Silicon rev U and rev T, LIN only  
Program memory size  
6 = 32 Kbytes  
7 = 48 Kbytes(3)  
8 = 64 Kbytes  
9 = 96 Kbytes(3)  
A= 128 Kbytes  
Pin count  
6 = 32 pins  
8 = 48 pins  
9= 64 pins  
A = 80 pins  
Package type  
T = LQFP  
U = VFQFPN  
Temperature range  
A = -40 to 85 °C  
B = -40 to 105 °C(3)  
C = -40 to 125 °C  
D = -40 to 150 °C(4)  
Packing  
Y = Tray  
U = Tube  
X = Tape and reel compliant with EIA 481-C  
1. For a list of available options (e.g. memory size, package) and orderable part numbers or for further  
information on any aspect of this device, please go to www.st.com or contact the ST Sales Office nearest  
to you.  
2. Customer specific FASTROM code or custom device configuration. This field shows ‘SSS’ if the device  
contains a super set silicon, usually equipped with bigger memory and more I/Os. This silicon is supposed  
to be replaced later by the target silicon.  
3. Not recommended for new design.  
4. Available on STM8AFx2xx devices.  
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STM8AF52/62xx, STM8AF51/61xx  
STM8 development tools  
13  
STM8 development tools  
Development tools for the STM8A microcontrollers include the  
STice emulation system offering tracing and code profiling  
STVD high-level language debugger including assembler and visual development  
environment - seamless integration of third party C compilers  
STVP Flash programming software  
In addition, the STM8A comes with starter kits, evaluation boards and low-cost in-circuit  
debugging/programming tools.  
13.1  
Emulation and in-circuit debugging tools  
The STM8 tool line includes the STice emulation system offering a complete range of  
emulation and in-circuit debugging features on a platform that is designed for versatility and  
cost-effectiveness. In addition, STM8A application development is supported by a low-cost  
in-circuit debugger/programmer.  
The STice is the fourth generation of full-featured emulators from STMicroelectronics. It  
offers new advanced debugging capabilities including tracing, profiling and code coverage  
analysis to help detect execution bottlenecks and dead code.  
In addition, STice offers in-circuit debugging and programming of STM8A microcontrollers  
via the STM8 single wire interface module (SWIM), which allows non-intrusive debugging of  
an application while it runs on the target microcontroller.  
For improved cost effectiveness, STice is based on a modular design that allows you to  
order exactly what you need to meet your development requirements and to adapt your  
emulation system to support existing and future ST microcontrollers.  
13.1.1  
STice key features  
Program and data trace recording up to 128 K records  
Advanced breakpoints with up to 4 levels of conditions  
Data breakpoints  
Real-time read/write of all device resources during emulation  
Occurrence and time profiling and code coverage analysis (new features)  
In-circuit debugging/programming via SWIM protocol  
8-bit probe analyzer  
1 input and 2 output triggers  
USB 2.0 high-speed interface to host PC  
Power supply follower managing application voltages between 1.62 to 5.5 V  
Modularity that allows you to specify the components you need to meet your  
development requirements and adapt to future requirements  
Supported by free software tools that include integrated development environment  
(IDE), programming software interface and assembler for STM8.  
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STM8 development tools  
STM8AF52/62xx, STM8AF51/61xx  
13.2  
Software tools  
STM8 development tools are supported by a complete, free software package from STMi-  
croelectronics that includes ST visual develop (STVD) IDE and the ST visual programmer  
(STVP) software interface. STVD provides seamless integration of the Cosmic and Raiso-  
nance C compilers for STM8.  
13.2.1  
STM8 toolset  
The STM8 toolset with STVD integrated development environment and STVP programming  
software is available for free download at www.st.com. This package includes:  
ST visual develop  
Full-featured integrated development environment from STMicroelectronics, featuring:  
Seamless integration of C and ASM toolsets  
Full-featured debugger  
Project management  
Syntax highlighting editor  
Integrated programming interface  
Support of advanced emulation features for STice such as code profiling and coverage  
ST visual programmer (STVP)  
Easy-to-use, unlimited graphical interface allowing read, write and verification of the STM8A  
microcontroller’s Flash memory. STVP also offers project mode for saving programming  
configurations and automating programming sequences.  
13.2.2  
C and assembly toolchains  
Control of C and assembly toolchains is seamlessly integrated into the STVD integrated  
development environment, making it possible to configure and control the building of your  
application directly from an easy-to-use graphical interface. Available toolchains include:  
C compiler for STM8  
All compilers are available in free version with a limited code size depending on the  
compiler. For more information, refer to www.cosmic-software.com, www.raisonance.com,  
and www.iar.com.  
STM8 assembler linker  
Free assembly toolchain included in the STM8 toolset, which allows you to assemble and  
link your application source code.  
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STM8AF52/62xx, STM8AF51/61xx  
STM8 development tools  
13.3  
Programming tools  
During the development cycle, STice provides in-circuit programming of the STM8A Flash  
microcontroller on your application board via the SWIM protocol. Additional tools are to  
include a low-cost in-circuit programmer as well as ST socket boards, which provide  
dedicated programming platforms with sockets for programming your STM8A.  
For production environments, programmers will include a complete range of gang and  
automated programming solutions from third-party tool developers already supplying  
programmers for the STM8 family.  
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Revision history  
STM8AF52/62xx, STM8AF51/61xx  
14  
Revision history  
Table 57. Document revision history  
Date  
Revision  
Changes  
31-Jan-2008  
Rev 1  
Initial release  
Added ‘H’ products to the datasheet (Flash no EEPROM).  
Features on page 1: Updated Memories, Reset and supply  
management, Communication interfaces and I/Os; reduced wakeup  
pins by 1.  
Table 1: Removed STM8AF6168, STM8AF6148, STM8AF6166,  
STM8AF6146, STM8AF5168, STM8AF5186, STM8AF5176, and  
STM8AF5166.  
Section 1, Section 5, Section 6.2, Table 21, and Section 9: Updated  
reference documentation: RM0009, PM0047, and UM0470.  
Section 2: Added information about peak performance.  
Section 3: Removed STM8A common features table.  
Table 4: Removed STM8AF5186T, STM8AF5176T, STM8AF5168T,  
and STM8AF5166T.  
Table 5: Removed STM8AF6168T, STM8AF6166T, STM8AF6148T,  
and STM8AF6146T.  
Section 5: Made minor content changes and improved readability  
and layout.  
Section 5.5.3: Major modification, TMU included.  
Section 5.5.2: User trimming updated.  
Section 5.5.3: LSI as CPU clock added.  
Section 5.5.4 , Section 5.5.5: Maximum frequency conditional 32  
Kbyte/128 Kbyte.  
Section 5.8: Scan for 128 Kbyte removed.  
22-Aug-2008  
Rev 2  
Section 5.9, Section 5.9.3: SPI 10 Mb/s.  
Figure 3, Figure 4, and Figure 5: Amended footnote 1.  
Table 12: HS output changed from 20 mA to 8 mA.  
Section 7: Corrected Figure 7: Register and memory map; removed  
address list; added Table 14.  
Section 10.3.2 Note on typical/WC values added.  
Table 18: Replaced the source blocks ‘simple USART’, ‘very low-end  
timer (timer 4)’, and ‘EEPROM’ with ‘LINUART’, ‘timer4’ and  
‘reserved’ respectively, added TMU registers.  
Table 20: Updated OPT6 and NOPT6, added OPT7 to 17 (TMU, BL)  
Table 21: Updated OPT1 UBC[7:0], OPT4 CKAWUSEL, OPT4  
PRSC [1:0], and OPT6, added OPT7 to 16 (TMU).  
Table 23: Amended footnotes.  
Table 26: Added parameter ‘voltage and current operating  
conditions’.  
Table 27: Amended footnotes.  
Table 28: Replaced.  
Table 29: Amended maximum data and footnotes.  
Table 21: Replaced.  
Table 22: Added and amended IDD(RUN) data; amended IDD(WFI)  
data; amended footnotes.  
Table 32: Filled in, amended maximum data and footnotes.  
Figure 12 to Figure 17: info on peripheral activity added.  
Table 33: Modified fHSE_ext data and added VHSEdhl data.  
102/110  
Doc ID 14395 Rev 9  
 
 
STM8AF52/62xx, STM8AF51/61xx  
Table 57. Document revision history (continued)  
Revision history  
Date  
Revision  
Changes  
Table 35: Removed ACCHSI parameters and replaced with ACCHS  
parameters; amended data and footnotes.  
Amended data of ‘RAM and hardware registers’ table.  
Table 37: Updated names and data of NRW and tRET parameters.  
Table 40: Added VOH and VOL parameters; Updated Ilkg ana  
parameter.  
Removed: Output driving current (standard ports), Output driving  
current (true open drain ports), and Output driving current (high sink  
ports).  
Table 45: Updated fADC, tS, and tCONV data.  
ADC accuracy for VDDA = 3.3 V table: Removed the 4-MHz condition  
from all parameters.  
Rev 2  
cont’d  
22-Aug-2008  
Table 46: Removed the 4-MHz condition from all parameters;  
updated footnote 1 and removed footnote 2.  
Table 50: Added data for TA = 145 °C.  
Figure 52: Updated memory size, pin count and package type  
information.  
Replaced the salestype ‘STM8H61xx’ with ‘STM8AH61xx on the first  
page.  
Added ‘part numbers’ to heading rows of Table 1: Device summary.  
Updated the 80-pin package silhouette on page 1 in line with POA  
0062342-revD.  
Table 18: Renamed ‘TMU key registers 0-7 [7:0]’ as ‘TMU key  
registers 1-8 [7:0]’  
Section 9: Updated introductory text concerning option bytes which  
do not need to be saved in a complementary form.  
Table 18: Renamed the option bits ‘TMU[0:3]’, ‘NTMU[0:3]’, and  
‘TMU_KEY 0-7 [7:0]’ as ‘TMU[3:0]’, ‘NTMU[3:0]’, and ‘TMU_KEY 1-8  
[7:0]’ respectively.  
16-Sep-2008  
Rev 3  
Table 21: Updated values of option byte 5 (HSECNT[7:0]); inverted  
the description of option byte 6 (TMU[3:0]); renamed option bytes 8  
to 15 ‘TMU_KEY 0-7 [7:0]’, as ‘TMU_KEY 1-8 [7:0]’.  
Updated 80-pin package information in line with POA 0062342-revD  
in Figure 44 and Table 52.  
Doc ID 14395 Rev 9  
103/110  
Revision history  
Table 57. Document revision history (continued)  
STM8AF52/62xx, STM8AF51/61xx  
Date  
Revision  
Changes  
Added ‘STM8AH61xx’ and ‘STM8AH51xx to document header.  
Updated Features on page 1 (memories, timers, operating  
temperature, ADC and I/Os).  
Updated Table 1: Device summary.  
Updated Kbytes value of program memory in Chapter 1: Introduction  
Chapter 2: Description  
– Changed the first two lines from the top.  
Updated Figure 1: STM8A block diagram  
Updated Chapter 5: Product overview  
In Figure 5: LQFP 48-pin pinout, added USART function to pins 10,  
11, and 12; added CAN Tx and CAN Rx functions to pins 35 and 36  
respectively.  
Section 6.2: Pin description  
– Deleted text below the Table 12: Legend/abbreviation for the pin  
description table  
Table 13: STM8A microcontroller family pin description  
– 68th, 69th pin (LQFP80): replaced X with a dash for PP output  
– Added a table footnote  
Updated Figure 7: Register and memory map  
Table 14: Memory model 128K  
– Updated footnote  
Deleted the table “Stack and RAM partitioning“  
Table 19: STM8A interrupt table.  
01-Jul-2009  
Rev 4  
– Updated priorities 13, 15, 17, 20 and 24  
– Changed table footnote  
Updated Chapter 7.2: Register map  
Updated Table 39: Data memory, Table 40: I/O static characteristics,  
and Table 41: NRST pin characteristics.  
Section 10.1.1: Minimum and maximum values.  
– Added ambient temperature TA = -40 °C  
Updated Table 22: Voltage characteristics  
Updated Table 23: Current characteristics  
Updated Table 24: Thermal characteristics  
UpdatedTable 26: General operating conditions  
UpdatedTable 27: Operating conditions at power-up/power-down.  
Figure 10: fCPUmax versus VDD.  
– Updated temperature ranges in functional area  
– Added a figure footnote  
Removed ‘total current consumption’ and ‘note on the run-current  
typical values’.  
Replaced Table 28: Total current consumption in Run, Wait and Slow  
mode. General conditions for VDD apply, TA = -40 °C to 150 °C  
Replaced Table 29: Total current consumption in Halt and Active-halt  
modes. General conditions for VDD applied. TA = -40 °C to 55 °C  
unless otherwise stated.  
Removed Table 21: Total current consumption in run, wait and slow  
mode. General conditions for VDD apply. TA = -40 °C to 145 °C  
104/110  
Doc ID 14395 Rev 9  
STM8AF52/62xx, STM8AF51/61xx  
Table 57. Document revision history (continued)  
Revision history  
Date  
Revision  
Changes  
Removed Table 22: Total current consumption and timing in halt, fast  
active halt and slow active halt modes at VDD = 3.3 V.  
Added Table 30: Oscillator current consumption  
Added Table 31: Programming current consumption.  
Updated Table 32: Typical peripheral current consumption VDD = 5.0  
V
Changed Section : HSE external clock title from “HSE user external  
clock“  
Updated Table 33: HSE external clock characteristics  
Updated Table 34: HSE oscillator characteristics.  
Figure 19: HSE oscillator circuit diagram.  
– Changed ‘consumption control’ to ‘current control’  
HSE oscillator critical gm formula.  
– Clarified formula  
Updated Table 35: HSI oscillator characteristics.  
Removed ‘RAM and hardware registers’  
Removed Table 29: RAM and hardware registers.  
Updated Table 37: Flash program memory/data EEPROM memory.  
Added Table 38: Flash program memory  
Added Table 39: Data memory.  
Updated Table 40: I/O static characteristics  
Updated Table 41: NRST pin characteristics  
Updated Table 42: TIM 1, 2, 3, and 4 electrical specifications  
Section 10.3.9: SPI interface  
01-Jul-2009  
Rev 4  
Changed title from “SPI serial peripheral interface“  
Updated Table 43: SPI characteristics.  
Figure 39: SPI timing diagram in slave mode and with CPHA = 0  
– Changed title  
– Added footnote 1.  
Figure 40: SPI timing diagram in slave mode and with CPHA = 1  
– Changed title  
Updated Table 45: ADC characteristics.  
Updated Figure 42: Typical application with ADC and added legend.  
Removed Table 36: ADC accuracy for VDDA = 3.3 V  
Updated Table 46: ADC accuracy for VDDA = 5 V  
Updated Table 48: EMI data  
Updated Table 50: Electrical sensitivities  
Added Section : 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..  
Figure 45: LQFP 64-pin low profile quad flat package (10 x 10)  
– Deleted footnote  
Updated Figure 52: Ordering information scheme(1).  
Added Chapter 13: STM8 development tools.  
Doc ID 14395 Rev 9  
105/110  
Revision history  
Table 57. Document revision history (continued)  
STM8AF52/62xx, STM8AF51/61xx  
Changes  
Date  
Revision  
Updated Table 1: Device summary:  
22-Oct-2009  
Rev 5  
– Added STM8AF5178, STM8AF519A and STM8AF619A.  
Updated title on cover page.  
Modified cover page header to clarify the part numbers covered by  
the datasheets. Updated Note 1 below Table 1: Device summary to  
add ‘P’ order codes.  
Changed definition of ‘P’ order codes.  
‘Q’ order codes (FASTROM and EEPROM) removed.  
Content of Section 5: Product overview reorganized. Table 13:  
STM8A microcontroller family pin description: updated PD7/TLI  
alternate function, removed caution note for PD6/ LINUART_RX, and  
added Note 1 to PA1/OSCIN.  
Renamed Section 7 Memory and register map, and content merged  
with section 9. Register map. Updated Figure 7: Register and  
memory map.  
13-Apr-2010  
Rev 6  
Renamed BL_EN and NBL_EN, BL and NBL, respectively, in  
Table 20: Option bytes.  
Updated AFR4 definition in Table 21: Option byte description.Added  
CEXT in Table 26: General operating conditions, and Section 10.3.1:  
VCAP external capacitor.  
Update tVDD in Table 27: Operating conditions at power-up/power-  
down.  
Moved Table 32: Typical peripheral current consumption VDD = 5.0 V  
to Section : Current consumption for on-chip peripherals.  
Removed VESD(MM) from Table 49: ESD absolute maximum ratings.  
Updated Section 12: Ordering information to the devices supported  
by the datasheet.  
Updated Section 13: STM8 development tools.  
Added STM8AF5168 and STM8AF518A part number in Figure 4,  
and STM8AF618A in Figure 5. Added STM8AF52xx, STM8AF6269,  
STM8AF628x, and STM8AF62Ax.  
Updated D temperature range to -40 to 150°C.  
Updated number of I/Os on cover page.  
Added Table 25: Operating lifetime.  
Restored VESD(MM) from Table 49: ESD absolute maximum ratings.  
Table 26: General operating conditions: updated VCAP information.  
ESL parameter, and range D maximum junction temperature (TJ).  
08-Jul-2010  
Rev 7  
Added STM8AF52xx and STM8AF62xx, and Note 3 in Section 12:  
Ordering information.  
Updated Section 13: STM8 development tools: added Table 54:  
Product evolution summary, and split the beCAN time triggered  
communication mode limitation into Section 13.7.3 and  
Section 13.7.4.  
106/110  
Doc ID 14395 Rev 9  
STM8AF52/62xx, STM8AF51/61xx  
Table 57. Document revision history (continued)  
Revision history  
Date  
Revision  
Changes  
Modified references to reference manual, and Flash programming  
manual in the whole document.  
Added reference to AEC Q100 standard on cover page.  
Renamed timer types as follows:  
– Auto-reload timer to general purpose timer  
– Multipurpose timer to advanced control timer  
– System timer to basic timer  
Introduced concept of high density Flash program memory.  
Updated number of I/Os for devices in 80-, 64-, and 48-pin packages  
in Table 2: STM8AF52xx product line-up with CAN, Table 3:  
STM8AF62xx product line-up without CAN, Table 4:  
STM8AF/H/P51xx product line-up with CAN, and Table 5:  
STM8AF/H/P61xx product line-up without CAN.  
Added TMU brief description in Section 5.4: Flash program and data  
EEPROM, updated TMU_MAXATT description in Table 21: Option  
byte description, and TMU_MAWATT reset value in Table 20: Option  
bytes.  
Updated clock sources in clock controller features (Section 5.5.1).  
Added Table 7: Peripheral clock gating bits (CLK_PCKENR2) in  
Section 5.5.6.  
3&-Jan-2011  
Rev 8  
Added calibration using TIM3 in Section 5.7.2: Auto-wakeup counter.  
Added Table 10: ADC naming and Table 11: Communication  
peripheral naming correspondence.  
Updated SPI data rate to fMASTER/2 in Section 5.9.3: Serial  
peripheral interface (SPI).  
Added reset state in Table 12: Legend/abbreviation for the pin  
description table.  
Table 13: STM8A microcontroller family pin description: modified  
Note 2, added Note 3 related to PD1/SWIM, corrected wpu input for  
PE1 and PE2, and renamed TIMn_CCx and TIMn_NCCx to  
TIMn_CHx and TIMn_CHxN, respectively.  
Section 7.2: Register map: Removed CAN register CLK_CANCCR.  
Removed I2C_PECR register.  
Added Note 1 for Px_IDR registers in Table 15: I/O port hardware  
register map. Updated register reset values for Px_IDR and PD_CR1  
registers.  
Replaced tables describing register maps and reset values for non-  
volatile memory, global configuration, reset status, TMU, clock  
controller, interrupt controller, timers, communication interfaces, and  
ADC, by Table 16: General hardware register map. Added debug  
module register map.  
Doc ID 14395 Rev 9  
107/110  
Revision history  
Table 57. Document revision history (continued)  
STM8AF52/62xx, STM8AF51/61xx  
Changes  
Date  
Revision  
Renamed Fast Active Halt mode to Active-halt mode with regulator  
on, and Slow Active Halt mode to Active-halt mode with regulator off,  
updated Section 5.6: Low-power operating modes, and Table 29:  
Total current consumption in Halt and Active-halt modes. General  
conditions for VDD applied. TA = -40 °C to 55 °C unless otherwise  
stated. IDD(FAH) and IDD(SAH) renamed IDD(AH); WU(FAH)  
t
and tWU(SAH)  
renamed tWU(AH)  
.
Removed note 1 in Table 26: General operating conditions, and note  
1 below Figure 10: fCPUmax versus VDD.  
Removed note 3 in Table 28: Total current consumption in Run, Wait  
and Slow mode. General conditions for VDD apply, TA = -40 °C to  
150 °C.  
Removed note 2 in Table 33: HSE external clock characteristics and  
Table 37: Flash program memory/data EEPROM memory.  
Removed note 1 in Table 39: Data memory. Modified TWE maximum  
value in Table 38: Flash program memory and Table 39: Data  
memory.  
Rev 8  
(continued)  
3&-Jan-2011  
Added tIFP(NRST) and renamed VF(NRST) IFP  
t
in Table 41: NRST pin  
characteristics.  
Added recommendation concerning NRST pin level, and power  
consumption sensitive applications, above Figure 38:  
Recommended reset pin protection, and updated external capacitor  
value.  
Update Note 1 in Table 42: TIM 1, 2, 3, and 4 electrical  
specifications.  
Updated Note 1 in Table 43: SPI characteristics.  
Moved know limitations to separate errata sheet.  
Added “not recommended for new design” note to device family 51,  
memory size 7 and 9, and temperature range B, in Figure 52:  
Ordering information scheme(1).  
Added Raisonance compiler in Section 13.2: Software tools.  
Updated wildcards of document part numbers.  
Added VFQFPN package.  
Added STM8AF62A6 part number.  
Table 1: Device summary: updated footnote 1 and added footnote 2.  
Table 2: STM8AF52xx product line-up with CAN and Table 3:  
STM8AF62xx product line-up without CAN: added “P” version for all  
order codes; updated size of data EEPROM for 64K devices to 2K  
instead of 1.5K; updated RAM.  
Figure 1: STM8A block diagram: updated POR, BOR and WDG;  
removed PDR; added legend.  
18-Jul-2012  
Rev 9  
Section 5.4: Flash program and data EEPROM: removed  
nonrelevant bullet points and added a sentence about the factory  
programme.  
Added Table 6: Peripheral clock gating bits (CLK_PCKENR1) and  
updated Table 7: Peripheral clock gating bits (CLK_PCKENR2).  
ADC features: updated ADC input range.  
Table 14: Memory model 128K: updated RAM size, RAM end  
addresses, and stack roll-over addresses; updated footnote 1.  
108/110  
Doc ID 14395 Rev 9  
STM8AF52/62xx, STM8AF51/61xx  
Table 57. Document revision history (continued)  
Revision history  
Date  
Revision  
Changes  
Table 20: Option bytes: updated factory default setting for NOPT17;  
updated footnote 1.  
Table 22: Voltage characteristics: updated VDDX - VDD to VDDX - VSS  
.
Table 26: General operating conditions: updated VCAP  
.
Table 28: Total current consumption in Run, Wait and Slow mode.  
General conditions for VDD apply, TA = -40 °C to 150 °C: updated  
conditions for IDD(RUN)  
.
Table 40: I/O static characteristics: added new condition and new  
max values for rise and fall time; updated footnote 2.  
Section 10.3.7: Reset pin characteristics: updated text below  
Figure 37: Typical NRST pull-up current Ipu vs VDD.  
Figure 38: Recommended reset pin protection: updated unit of  
capacitor.  
Table 43: SPI characteristics: updated SCK high and low time  
conditions and values.  
Figure 41: SPI timing diagram - master mode: replaced ‘SCK input’  
signals with ‘SCK output’ signals.  
Rev 9  
(continued)  
18-Jul-2012  
Updated Table 52: LQFP 80-pin low profile quad flat package  
mechanical data, Table 53: LQFP 64-pin low profile quad flat  
package mechanical data, Table 54: LQFP 48-pin low profile quad  
flat package mechanical data, Table 55: LQFP 32-pin low profile  
quad flat package mechanical data, and Table 56: VFQFPN 32-lead  
very thin fine pitch quad flat no-lead package mechanical data.  
Replaced Figure 45: LQFP 64-pin low profile quad flat package (10 x  
10), Figure 47: LQFP 48-pin low profile quad flat package (7 x 7),  
and Figure 49: LQFP 32-pin low profile quad flat package (7 x 7).  
Added Figure 46: LQFP 64-pin recommended footprint, Figure 48:  
LQFP 48-pin recommended footprint, and Figure 50: LQFP 32-pin  
recommended footprint.  
Updated Figure 51: VFQFPN 32-lead very thin fine pitch quad flat  
no-lead package (5 x 5).  
Updated Figure 52: Ordering information scheme(1).  
Section 13.2.2: C and assembly toolchains: added www.iar.com.  
Doc ID 14395 Rev 9  
109/110  
STM8AF52/62xx, STM8AF51/61xx  
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