LPC1754 [NXP]
32-bit ARM Cortex-M3 MCU up to 512 kB flash and 64 kB SRAM with Ethernet, USB 2.0 Host/Device/OTG, CAN; 32位ARM Cortex -M3 MCU高达512 KB的闪存和64 KB的SRAM,带有以太网, USB 2.0主机/设备/ OTG , CAN型号: | LPC1754 |
厂家: | NXP |
描述: | 32-bit ARM Cortex-M3 MCU up to 512 kB flash and 64 kB SRAM with Ethernet, USB 2.0 Host/Device/OTG, CAN |
文件: | 总71页 (文件大小:300K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
LPC1758/56/54/52/51
32-bit ARM Cortex-M3 MCU; up to 512 kB flash and 64 kB
SRAM with Ethernet, USB 2.0 Host/Device/OTG, CAN
Rev. 02 — 11 February 2009
Objective data sheet
1. General description
The LPC1758/56/54/52/51 are ARM Cortex-M3 based microcontrollers for embedded
applications featuring a high level of integration and low power consumption. The ARM
Cortex-M3 is a next generation core that offers system enhancements such as enhanced
debug features and a higher level of support block integration.
The LPC1758/56/54/52/51 operate at CPU frequencies of up to 100 MHz. The ARM
Cortex-M3 CPU incorporates a 3-stage pipeline and uses a Harvard architecture with
separate local instruction and data buses as well as a third bus for peripherals. The ARM
Cortex-M3 CPU also includes an internal prefetch unit that supports speculative
branching.
The peripheral complement of the LPC1758/56/54/52/51 includes up to 512 kB of flash
memory, up to 64 kB of data memory, Ethernet MAC, USB Device/Host/OTG interface,
8-channel general purpose DMA controller, 4 UARTs, 2 CAN channels, 2 SSP controllers,
SPI interface, 3 I2C-bus interfaces, 2-input plus 2-output I2S-bus interface, 6 channel
12-bit ADC, 10-bit DAC, motor control PWM, Quadrature Encoder interface, 4 general
purpose timers, 6-output general purpose PWM, ultra-low power Real-Time Clock (RTC)
with separate battery supply, and up to 52 general purpose I/O pins.
2. Features
I ARM Cortex-M3 processor, running at frequencies of up to 100 MHz. A Memory
Protection Unit (MPU) supporting eight regions is included.
I ARM Cortex-M3 built-in Nested Vectored Interrupt Controller (NVIC).
I Up to 512 kB on-chip flash programming memory. Enhanced flash memory accelerator
enables high-speed 100 MHz operation with zero wait states.
I In-System Programming (ISP) and In-Application Programming (IAP) via on-chip
bootloader software.
I On-chip SRAM includes:
N Up to 32 kB of SRAM on the CPU with local code/data bus for high-performance
CPU access.
N Two/one 16 kB SRAM blocks with separate access paths for higher throughput.
These SRAM blocks may be used for Ethernet (LPC1758 only), USB, and DMA
memory, as well as for general purpose CPU instruction and data storage.
I Eight channel General Purpose DMA controller (GPDMA) on the AHB multilayer
matrix that can be used with the SSP, I2S-bus, UART, the Analog-to-Digital and
Digital-to-Analog converter peripherals, timer match signals, and for
memory-to-memory transfers.
LPC1758/56/54/52/51
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
I Multilayer AHB matrix interconnect provides a separate bus for each AHB master. AHB
masters include the CPU, General Purpose DMA controller, Ethernet MAC (LPC1758
only), and the USB interface. This interconnect provides communication with no
arbitration delays.
I Split APB bus allows high throughput with few stalls between the CPU and DMA.
I Serial interfaces:
N On the LPC1758 only, Ethernet MAC with RMII interface and dedicated DMA
controller.
N USB 2.0 full-speed device/Host/OTG controller with dedicated DMA controller and
on-chip PHY for device, Host, and OTG functions. The LPC1752/51 include a USB
device controller only.
N Four UARTs with fractional baud rate generation, internal FIFO, DMA support, and
RS-485 support. One UART has modem control I/O, and one UART has IrDA
support.
N CAN 2.0B controller with two (LPC1758/56) or one (LPC1754/52/51) channels.
N SPI controller with synchronous, serial, full duplex communication and
programmable data length.
N Two SSP controllers with FIFO and multi-protocol capabilities. The SSP interfaces
can be used with the GPDMA controller.
N Two I2C-bus interfaces supporting fast mode with a data rate of 400 kbit/s with
multiple address recognition and monitor mode.
N On the LPC1758/56 only, I2S (Inter-IC Sound) interface for digital audio input or
output, with fractional rate control. The I2S-bus interface can be used with the
GPDMA. The I2S-bus interface supports 3-wire and 4-wire data transmit and
receive as well as master clock input/output.
I Other peripherals:
N 52 General Purpose I/O (GPIO) pins with configurable pull-up/down resistors and a
new, configurable open-drain operating mode.
N 12-bit Analog-to-Digital Converter (ADC) with input multiplexing among six pins,
conversion rates up to 1 MHz, and multiple result registers. The 12-bit ADC can be
used with the GPDMA controller.
N On the LPC1758/56/54 only, 10-bit Digital-to-Analog Converter (DAC) with
dedicated conversion timer and DMA support.
N Four general purpose timers/counters, with a total of three capture inputs and ten
compare outputs. Each timer block has an external count input and DMA support.
N One motor control PWM with support for three-phase motor control.
N Quadrature encoder interface that can monitor one external quadrature encoder.
N One standard PWM/timer block with external count input.
N Real-Time Clock (RTC) with a separate power domain and dedicated RTC
oscillator. The RTC block includes 64 bytes of battery-powered backup registers.
N Watchdog Timer (WDT) resets the microcontroller within a reasonable amount of
time if it enters an erroneous state.
N System tick timer, including an external clock input option.
N Repetitive Interrupt Timer (RIT) provides programmable and repeating timed
interrupts.
N Each peripheral has its own clock divider for further power savings.
LPC1758_56_54_52_51_2
© NXP B.V. 2009. All rights reserved.
Objective data sheet
Rev. 02 — 11 February 2009
2 of 71
LPC1758/56/54/52/51
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
I Standard JTAG test/debug interface for compatibility with existing tools. Serial Wire
Debug and Serial Wire Trace Port options.
I Emulation trace module enables non-intrusive, high-speed real-time tracing of
instruction execution.
I Integrated PMU (Power Management Unit) automatically adjusts internal regulators to
minimize power consumption during Sleep, Deep sleep, Power-down, and Deep
power-down modes.
I Four reduced power modes: Sleep, Deep-sleep, Power-down, and Deep power-down.
I Single 3.3 V power supply (2.4 V to 3.6 V).
I One external interrupt input configurable as edge/level sensitive. All pins on PORT0
and PORT2 can be used as edge sensitive interrupt sources.
I Non-maskable Interrupt (NMI) input.
I Clock output function that can reflect the main oscillator clock, IRC clock, RTC clock,
CPU clock, and the USB clock.
I The Wakeup Interrupt Controller (WIC) allows the CPU to automatically wake up from
any priority interrupt that can occur while the clocks are stopped in deep sleep,
power-down, and deep power-down modes.
I Processor wake-up from Power-down mode via interrupts from various peripherals.
I Brownout detect with separate threshold for interrupt and forced reset.
I Power-On Reset (POR).
I Crystal oscillator with an operating range of 1 MHz to 25 MHz.
I 4 MHz internal RC oscillator trimmed to 1 % accuracy that can optionally be used as a
system clock.
I PLL allows CPU operation up to the maximum CPU rate without the need for a
high-frequency crystal. May be run from the main oscillator, the internal RC oscillator,
or the RTC oscillator.
I USB PLL for added flexibility.
I Code Read Protection (CRP) with different security levels.
I Available as 80-pin LQFP package (12 × 12 × 1.4 mm).
3. Applications
I eMetering
I Lighting
I Industrial networking
I Alarm systems
I White goods
I Motor control
LPC1758_56_54_52_51_2
© NXP B.V. 2009. All rights reserved.
Objective data sheet
Rev. 02 — 11 February 2009
3 of 71
LPC1758/56/54/52/51
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
4. Ordering information
Table 1.
Ordering information
Type number
Package
Name
Description
Version
LPC1758FBD80
LPC1756FBD80
LPC1754FBD80
LPC1752FBD80
LPC1751FBD80
LQFP80
LQFP80
LQFP80
LQFP80
LQFP80
plastic low-profile quad package; 80 leads; body 12 × 12 × 1.4 mm
plastic low-profile quad package; 80 leads; body 12 × 12 × 1.4 mm
plastic low-profile quad package; 80 leads; body 12 × 12 × 1.4 mm
plastic low-profile quad package; 80 leads; body 12 × 12 × 1.4 mm
plastic low-profile quad package; 80 leads; body 12 × 12 × 1.4 mm
SOT315-1
SOT315-1
SOT315-1
SOT315-1
SOT315-1
4.1 Ordering options
Table 2.
Ordering options
Type number
Flash
512 kB
256 kB
128 kB
64 kB
Total
SRAM
Ethernet USB
CAN
I2S-bus DAC Package Sampling
LPC1758FBD80
LPC1756FBD80
LPC1754FBD80
LPC1752FBD80
LPC1751FBD80
64 kB
32 kB
32 kB
16 kB
8 kB
yes
no
no
no
no
Device/
Host/OTG
2
2
1
1
1
yes
yes
no
yes
yes
yes
no
80 pins
80 pins
80 pins
80 pins
80 pins
Q2 2009
Device/
Host/OTG
Q1 2009
Q1 2009
Q1 2009
Q1 2009
Device/
Host/OTG
Device
only
no
32 kB
Device
only
no
no
LPC1758_56_54_52_51_2
© NXP B.V. 2009. All rights reserved.
Objective data sheet
Rev. 02 — 11 February 2009
4 of 71
LPC1758/56/54/52/51
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
5. Block diagram
XTAL1
debug
port
JTAG
interface
RMII pins
USB pins
USB PHY
XTAL2
RESET
LPC1758/56/54/52/51
TEST/DEBUG
INTERFACE
CLOCK
GENERATION,
POWER CONTROL,
SYSTEM
CLKOUT
USB HOST/
DEVICE/OTG
CONTROLLER
ETHERNET
CONTROLLER
WITH DMA
ARM
CORTEX-M3
DMA
CONTROLLER
FUNCTIONS
(2)
(4)
WITH DMA
clocks and
controls
I-code
bus
D-code
bus
system
bus
master
master
master
slave
ROM
slave
MULTILAYER AHB MATRIX
SRAM
64/32/
16/8 kB
slave
FLASH
ACCELERATOR
slave
slave
slave
AHB TO
APB
BRIDGE 1
P0, P1,
P2, P4
HIGH-SPEED
GPIO
AHB TO
APB
BRIDGE 0
FLASH
512/256/128/64/32 kB
APB slave group 0
SSP1
APB slave group 1
SSP0
SCK0
SCK1
SSEL0
MISO0
MOSI0
SSEL1
MISO1
MOSI1
RXD2/3
TXD2/3
RXD0/TXD0
8 × UART1
UART2/3
UART0/1
1 × I2SRX
3 × I2STX
TX_MCLK
RX_MCLK
RD1/2
TD1/2
(1)
CAN1/CAN2
(1)
I2S
SCL1
SDA1
I2C1
SPI0
SCL2
SDA2
I2C2
SCK/SSEL
MOSI/MISO
2 × MAT0/1
RI TIMER
TIMER2/3
TIMER 0/1
WDT
1 × CAP0,
2 × CAP1
4 × MAT2
2 × MAT3
PWM1[6:1]
PCAP1[1:0]
EXTERNAL INTERRUPTS
SYSTEM CONTROL
EINT0
PWM1
12-bit ADC
AD0[7:2]
MC0A/B
MC1A/B
MC2A/B
MCFB1/2
PIN CONNECT
MOTOR CONTROL PWM
P0, P2
GPIO INTERRUPT CONTROL
32 kHz
(3)
DAC
AOUT
RTCX1
RTCX2
PHA, PHB
INDEX
RTC
OSCILLATOR
QUADRATURE ENCODER
(1)
VBAT
LPC1758/56 only
LPC1758 only
LPC1758/56/54 only
LPC1752/51 USB device only
BACKUP REGISTERS
RTC POWER DOMAIN
(2)
(3)
(4)
002aae153
Grey-shaded blocks represent peripherals with connection to the GPDMA.
Fig 1. Block diagram
LPC1758_56_54_52_51_2
© NXP B.V. 2009. All rights reserved.
Objective data sheet
Rev. 02 — 11 February 2009
5 of 71
LPC1758/56/54/52/51
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
6. Pinning information
6.1 Pinning
1
60
20
41
002aae158
Fig 2. Pin configuration LQFP80 package
6.2 Pin description
Table 3.
Pin description
Symbol
Pin
Type
Description
P0[0] to P0[31]
I/O
Port 0: Port 0 is a 32-bit I/O port with individual direction controls for each bit. The
operation of port 0 pins depends upon the pin function selected via the pin connect
block. Some port pins are not available on the LQFP80 package.
P0[0]/RD1/TXD3/
SDA1
37[1]
I/O
I
P0[0] — General purpose digital input/output pin.
RD1 — CAN1 receiver input.
O
TXD3 — Transmitter output for UART3.
I/O
I/O
O
SDA1 — I2C1 data input/output (this is not an I2C-bus compliant open-drain pin).
P0[1] — General purpose digital input/output pin.
TD1 — CAN1 transmitter output.
P0[1]/TD1/RXD3/
SCL1
38[1]
I
RXD3 — Receiver input for UART3.
I/O
I/O
O
SCL1 — I2C1 clock input/output (this is not an I2C-bus compliant open-drain pin).
P0[2] — General purpose digital input/output pin.
TXD0 — Transmitter output for UART0.
P0[2]/TXD0/AD0[7] 79[2]
P0[3]/RXD0/AD0[6] 80[2]
I
AD0[7] — A/D converter 0, input 7.
I/O
I
P0[3] — General purpose digital input/output pin.
RXD0 — Receiver input for UART0.
I
AD0[6] — A/D converter 0, input 6.
P0[6]/
I2SRX_SDA/
SSEL1/MAT2[0]
64[1]
I/O
I/O
P0[6] — General purpose digital input/output pin.
I2SRX_SDA — Receive data. It is driven by the transmitter and read by the
receiver. Corresponds to the signal SD in the I2S-bus specification. (LPC1758/56
only).
I/O
O
SSEL1 — Slave Select for SSP1.
MAT2[0] — Match output for Timer 2, channel 0.
LPC1758_56_54_52_51_2
© NXP B.V. 2009. All rights reserved.
Objective data sheet
Rev. 02 — 11 February 2009
6 of 71
LPC1758/56/54/52/51
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
Table 3.
Symbol
P0[7]/I2STX_CLK/ 63[1]
SCK1/MAT2[1]
Pin description …continued
Pin
Type
I/O
Description
P0[7] — General purpose digital input/output pin.
I/O
I2STX_CLK — Transmit Clock. It is driven by the master and received by the
slave. Corresponds to the signal SCK in the I2S-bus specification. (LPC1758/56
only).
I/O
O
SCK1 — Serial Clock for SSP1.
MAT2[1] — Match output for Timer 2, channel 1.
P0[8] — General purpose digital input/output pin.
P0[8]/I2STX_WS/
MISO1/MAT2[2]
62[1]
I/O
I/O
I2STX_WS — Transmit Word Select. It is driven by the master and received by the
slave. Corresponds to the signal WS in the I2S-bus specification. (LPC1758/56
only).
I/O
O
MISO1 — Master In Slave Out for SSP1.
MAT2[2] — Match output for Timer 2, channel 2.
P0[9] — General purpose digital input/output pin.
P0[9]/I2STX_SDA/ 61[1]
MOSI1/MAT2[3]
I/O
I/O
I2STX_SDA — Transmit data. It is driven by the transmitter and read by the
receiver. Corresponds to the signal SD in the I2S-bus specification. (LPC1758/56
only).
I/O
O
MOSI1 — Master Out Slave In for SSP1.
MAT2[3] — Match output for Timer 2, channel 3.
P0[10] — General purpose digital input/output pin.
TXD2 — Transmitter output for UART2.
P0[10]/TXD2/
SDA2/MAT3[0]
39[1]
40[1]
47[1]
48[1]
46[1]
45[1]
I/O
O
I/O
O
SDA2 — I2C2 data input/output (this is not an open-drain pin).
MAT3[0] — Match output for Timer 3, channel 0.
P0[11] — General purpose digital input/output pin.
RXD2 — Receiver input for UART2.
P0[11]/RXD2/
SCL2/MAT3[1]
I/O
I
I/O
O
SCL2 — I2C2 clock input/output (this is not an open-drain pin).
MAT3[1] — Match output for Timer 3, channel 1.
P0[15] — General purpose digital input/output pin.
TXD1 — Transmitter output for UART1.
P0[15]/TXD1/
SCK0/SCK
I/O
O
I/O
I/O
I/O
I
SCK0 — Serial clock for SSP0.
SCK — Serial clock for SPI.
P0[16]/RXD1/
SSEL0/SSEL
P0[16] — General purpose digital input/output pin.
RXD1 — Receiver input for UART1.
I/O
I/O
I/O
I
SSEL0 — Slave Select for SSP0.
SSEL — Slave Select for SPI.
P0[17]/CTS1/
MISO0/MISO
P0[17] — General purpose digital input/output pin.
CTS1 — Clear to Send input for UART1.
MISO0 — Master In Slave Out for SSP0.
MISO — Master In Slave Out for SPI.
I/O
I/O
I/O
I
P0[18]/DCD1/
MOSI0/MOSI
P0[18] — General purpose digital input/output pin.
DCD1 — Data Carrier Detect input for UART1.
MOSI0 — Master Out Slave In for SSP0.
MOSI — Master Out Slave In for SPI.
I/O
I/O
LPC1758_56_54_52_51_2
© NXP B.V. 2009. All rights reserved.
Objective data sheet
Rev. 02 — 11 February 2009
7 of 71
LPC1758/56/54/52/51
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
Table 3.
Pin description …continued
Symbol
Pin
44[1]
Type
I/O
O
Description
P0[22]/RTS1/TD1
P0[22] — General purpose digital input/output pin.
RTS1 — Request to Send output for UART1.
TD1 — CAN1 transmitter output.
O
P0[25]/AD0[2]/
I2SRX _SDA/
TXD3
7[2]
I/O
I
P0[25] — General purpose digital input/output pin.
AD0[2] — A/D converter 0, input 2.
I/O
I2SRX_SDA — Receive data. It is driven by the transmitter and read by the
receiver. Corresponds to the signal SD in the I2S-bus specification. (LPC1758/56
only).
O
TXD3 — Transmitter output for UART3.
P0[26] — General purpose digital input/output pin.
AD0[3] — A/D converter 0, input 3.
P0[26]/AD0[3]/
AOUT/RXD3
6[3]
I/O
I
O
AOUT — DAC output. (LPC1758/56/54 only).
RXD3 — Receiver input for UART3.
I
P0[29]/USB_D+
P0[30]/USB_D−
P1[0] to P1[31]
22[4]
23[4]
I/O
I/O
I/O
I/O
I/O
P0[29] — General purpose digital input/output pin.
USB_D+ — USB bidirectional D+ line.
P0[30] — General purpose digital input/output pin.
USB_D− — USB bidirectional D− line.
Port 1: Port 1 is a 32-bit I/O port with individual direction controls for each bit. The
operation of port 1 pins depends upon the pin function selected via the pin connect
block. Some port pins are not available on the LQFP80 package.
P1[0]/
ENET_TXD0
76[1]
75[1]
74[1]
73[1]
72[1]
71[1]
70[1]
69[1]
25[1]
I/O
O
P1[0] — General purpose digital input/output pin.
ENET_TXD0 — Ethernet transmit data 0. (LPC1758 only).
P1[1] — General purpose digital input/output pin.
ENET_TXD1 — Ethernet transmit data 1. (LPC1758 only).
P1[4] — General purpose digital input/output pin.
ENET_TX_EN — Ethernet transmit data enable. (LPC1758 only).
P1[8] — General purpose digital input/output pin.
ENET_CRS — Ethernet carrier sense. (LPC1758 only).
P1[9] — General purpose digital input/output pin.
ENET_RXD0 — Ethernet receive data. (LPC1758 only).
P1[10] — General purpose digital input/output pin.
ENET_RXD1 — Ethernet receive data. (LPC1758 only).
P1[14] — General purpose digital input/output pin.
ENET_RX_ER — Ethernet receive error. (LPC1758 only).
P1[15] — General purpose digital input/output pin.
ENET_REF_CLK — Ethernet reference clock. (LPC1758 only).
P1[18] — General purpose digital input/output pin.
P1[1]/
ENET_TXD1
I/O
O
P1[4]/
ENET_TX_EN
I/O
O
P1[8]/
ENET_CRS
I/O
I
P1[9]/
ENET_RXD0
I/O
I
P1[10]/
ENET_RXD1
I/O
I
P1[14]/
ENET_RX_ER
I/O
I
P1[15]/
ENET_REF_CLK
I/O
I
P1[18]/
I/O
O
USB_UP_LED/
PWM1[1]/
CAP1[0]
USB_UP_LED — USB GoodLink LED indicator. It is LOW when device is
configured (non-control endpoints enabled). It is HIGH when the device is not
configured or during global suspend.
O
I
PWM1[1] — Pulse Width Modulator 1, channel 1 output.
CAP1[0] — Capture input for Timer 1, channel 0.
LPC1758_56_54_52_51_2
© NXP B.V. 2009. All rights reserved.
Objective data sheet
Rev. 02 — 11 February 2009
8 of 71
LPC1758/56/54/52/51
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
Table 3.
Symbol
Pin description …continued
Pin
26[1]
Type
I/O
O
Description
P1[19]/MC0A/
USB_PPWR
CAP1[1]
P1[19] — General purpose digital input/output pin.
MC0A — Motor control PWM channel 0, output A.
O
USB_PPWR — Port Power enable signal for USB port. (LPC1758/56/54 only).
CAP1[1] — Capture input for Timer 1, channel 1.
I
P1[20]/MCFB0/
PWM1[2]/SCK0
27[1]
28[1]
29[1]
30[1]
I/O
I
P1[20] — General purpose digital input/output pin.
MCFB0 — Motor control PWM channel 0, feedback input. Also Quadrature
Encoder Interface PHA input.
O
PWM1[2] — Pulse Width Modulator 1, channel 2 output.
SCK0 — Serial clock for SSP0.
I/O
I/O
O
P1[22]/MC0B/
USB_PWRD/
MAT1[0]
P1[22] — General purpose digital input/output pin.
MC0B — Motor control PWM channel 0, output B.
I
USB_PWRD — Power Status for USB port (host power switch). (LPC1758/56/54
only).
O
I/O
I
MAT1[0] — Match output for Timer 1, channel 0.
P1[23] — General purpose digital input/output pin.
P1[23]/MCFB1/
PWM1[4]/MISO0
MCFB1 — Motor control PWM channel 1, feedback input. Also Quadrature
Encoder Interface PHB input.
O
PWM1[4] — Pulse Width Modulator 1, channel 4 output.
MISO0 — Master In Slave Out for SSP0.
I/O
I/O
I
P1[24]/MCFB2/
PWM1[5]/MOSI0
P1[24] — General purpose digital input/output pin.
MCFB2 — Motor control PWM channel 2, feedback input. Also Quadrature
Encoder Interface INDEX input.
O
I/O
I/O
O
O
O
I/O
O
O
I
PWM1[5] — Pulse Width Modulator 1, channel 5 output.
MOSI0 — Master Out Slave in for SSP0.
P1[25]/MC1A/
CLKOUT/MAT1[1]
31[1]
32[1]
35[1]
36[1]
P1[25] — General purpose digital input/output pin.
MC1A — Motor control PWM channel 1, output A.
CLKOUT — Clock output.
MAT1[1] — Match output for Timer 1, channel 1.
P1[26] — General purpose digital input/output pin.
MC1B — Motor control PWM channel 1, output B.
PWM1[6] — Pulse Width Modulator 1, channel 6 output.
CAP0[0] — Capture input for Timer 0, channel 0.
P1[28] — General purpose digital input/output pin.
MC2A — Motor control PWM channel 2, output A.
PCAP1[0] — Capture input for PWM1, channel 0.
MAT0[0] — Match output for Timer 0, channel 0.
P1[29] — General purpose digital input/output pin.
MC2B — Motor control PWM channel 2, output B.
PCAP1[1] — Capture input for PWM1, channel 1.
MAT0[1] — Match output for Timer 0, channel 0.
P1[26]/MC1B/
PWM1[6]/CAP0[0]
P1[28]/MC2A/
PCAP1[0]/
MAT0[0]
I/O
O
I
O
I/O
O
I
P1[29]/MC2B/
PCAP1[1]/
MAT0[1]
O
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32-bit ARM Cortex-M3 microcontroller
Table 3.
Symbol
Pin description …continued
Pin
18[2]
Type
I/O
I
Description
P1[30]/VBUS
AD0[4]
/
P1[30] — General purpose digital input/output pin.
VBUS — Monitors the presence of USB bus power.
Note: This signal must be HIGH for USB reset to occur.
AD0[4] — A/D converter 0, input 4.
I
P1[31]/SCK1/
AD0[5]
17[2]
I/O
I/O
I
P1[31] — General purpose digital input/output pin.
SCK1 — Serial Clock for SSP1.
AD0[5] — A/D converter 0, input 5.
P2[0] to P2[31]
I/O
Port 2: Port 2 is a 32-bit I/O port with individual direction controls for each bit. The
operation of port 2 pins depends upon the pin function selected via the pin connect
block. Some port pins are not available on the LQFP80 package.
P2[0]/PWM1[1]/
TXD1
60[1]
59[1]
58[1]
I/O
O
O
I/O
O
I
P2[0] — General purpose digital input/output pin.
PWM1[1] — Pulse Width Modulator 1, channel 1 output.
TXD1 — Transmitter output for UART1.
P2[1]/PWM1[2]/
RXD1
P2[1] — General purpose digital input/output pin.
PWM1[2] — Pulse Width Modulator 1, channel 2 output.
RXD1 — Receiver input for UART1.
P2[2]/PWM1[3]/
CTS1/
TRACEDATA[3]
I/O
O
I
P2[2] — General purpose digital input/output pin.
PWM1[3] — Pulse Width Modulator 1, channel 3 output.
CTS1 — Clear to Send input for UART1.
O
I/O
O
I
TRACEDATA[3] — Trace data, bit 3.
P2[3]/PWM1[4]/
DCD1/
TRACEDATA[2]
55[1]
54[1]
53[1]
52[1]
51[1]
P2[3] — General purpose digital input/output pin.
PWM1[4] — Pulse Width Modulator 1, channel 4 output.
DCD1 — Data Carrier Detect input for UART1.
TRACEDATA[2] — Trace data, bit 2.
O
I/O
O
I
P2[4]/PWM1[5]/
DSR1/
TRACEDATA[1]
P2[4] — General purpose digital input/output pin.
PWM1[5] — Pulse Width Modulator 1, channel 5 output.
DSR1 — Data Set Ready input for UART1.
TRACEDATA[1] — Trace data, bit 1.
O
I/O
O
O
O
I/O
I
P2[5]/PWM1[6]/
DTR1/
TRACEDATA[0]
P2[5] — General purpose digital input/output pin.
PWM1[6] — Pulse Width Modulator 1, channel 6 output.
DTR1 — Data Terminal Ready output for UART1.
TRACEDATA[0] — Trace data, bit 0.
P2[6]/PCAP1[0]/
RI1/TRACECLK
P2[6] — General purpose digital input/output pin.
PCAP1[0] — Capture input for PWM1, channel 0.
RI1 — Ring Indicator input for UART1.
I
O
I/O
I
TRACECLK — Trace Clock.
P2[7]/RD2/
RTS1
P2[7] — General purpose digital input/output pin.
RD2 — CAN2 receiver input. (LPC1758/56 only).
RTS1 — Request to Send output for UART1.
O
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32-bit ARM Cortex-M3 microcontroller
Table 3.
Symbol
Pin description …continued
Pin
50[1]
Type
I/O
O
Description
P2[8]/TD2/
TXD2/ENET_MDC
P2[8] — General purpose digital input/output pin.
TD2 — CAN2 transmitter output. (LPC1758/56 only).
TXD2 — Transmitter output for UART2.
O
O
ENET_MDC — Ethernet MIIM clock. (LPC1758 only).
P2[9] — General purpose digital input/output pin.
P2[9]/
49[1]
I/O
O
USB_CONNECT/
RXD2/
ENET_MDIO
USB_CONNECT — Signal used to switch an external 1.5 kΩ resistor under
software control. Used with the SoftConnect USB feature.
I
RXD2 — Receiver input for UART2.
I/0
I/O
ENET_MDIO — Ethernet MIIM data input and output. (LPC1758 only).
P2[10] — General purpose digital input/output pin.
P2[10]/EINT0/NMI 41[5]
Note: LOW on this pin while RESET is LOW forces on-chip bootloader to take
over control of the part after a reset.
I
EINT0 — External interrupt 0 input.
NMI — Non-maskable interrupt input.
I
P4[0] to P4[31]
I/O
Port 4: Port 4 is a 32-bit I/O port with individual direction controls for each bit. The
operation of port 4 pins depends upon the pin function selected via the pin connect
block. Some port pins are not available on the LQFP80 package.
P4[28]/RX_MCLK/ 65[1]
MAT2[0]/TXD3
I/O
I
P4[28] — General purpose digital input/output pin.
RX_MCLK — I2S receive master clock. (LPC1758/56 only).
MAT2[0] — Match output for Timer 2, channel 0.
TXD3 — Transmitter output for UART3.
O
O
I/O
I
P4[29]/TX_MCLK/ 68[1]
MAT2[1]/RXD3
P4[29] — General purpose digital input/output pin.
TX_MCLK — I2S transmit master clock. (LPC1758/56 only).
MAT2[1] — Match output for Timer 2, channel 1.
RXD3 — Receiver input for UART3.
O
I
TDO/SWO
1[1]
O
O
I
TDO — Test Data out for JTAG interface.
SWO — Serial wire trace output.
TDI
2[1]
3[1]
TDI — Test Data in for JTAG interface.
TMS/SWDIO
I
TMS — Test Mode Select for JTAG interface.
SWDIO — Serial wire debug data input/output.
TRST — Test Reset for JTAG interface.
I/O
I
TRST
4[1]
5[1]
TCK/SWDCLK
I
TCK — Test Clock for JTAG interface.
I
SWDCLK — Serial wire clock.
RSTOUT
RESET
11
O
RSTOUT — This is a 3.3 V pin. LOW on this pin indicates LPC1758/56/54/52/51
being in Reset state.
14[6]
I
External reset input: A LOW on this pin resets the device, causing I/O ports and
peripherals to take on their default states, and processor execution to begin at
address 0. TTL with hysteresis, 5 V tolerant.
XTAL1
XTAL2
RTCX1
RTCX2
19[7]
20[7]
13[7]
15[7]
I
Input to the oscillator circuit and internal clock generator circuits.
Output from the oscillator amplifier.
O
I
Input to the RTC oscillator circuit.
O
Output from the RTC oscillator circuit.
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32-bit ARM Cortex-M3 microcontroller
Table 3.
Symbol
VSS
Pin description …continued
Pin
Type
Description
24, 33,
43, 57,
66, 78
I
ground: 0 V reference.
VSSA
9
I
I
I
I
analog ground: 0 V reference. This should nominally be the same voltage as VSS,
but should be isolated to minimize noise and error.
VDD(3V3)
VDD(REG)(3V3)
VDDA
21, 42,
56, 77
3.3 V supply voltage: This is the power supply voltage for the I/O ports.
34, 67
3.3 V voltage regulator supply voltage: This is the supply voltage for the on-chip
voltage regulator only.
8
analog 3.3 V pad supply voltage: This should be nominally the same voltage as
V
DD(3V3) but should be isolated to minimize noise and error. This voltage is used to
power the ADC and DAC.
VREFP
VREFN
VBAT
10
12
16
I
I
I
ADC positive reference voltage: This should be nominally the same voltage as
V
DDA but should be isolated to minimize noise and error. Level on this pin is used
as a reference for ADC and DAC.
ADC negative reference voltage: This should be nominally the same voltage as
V
SS but should be isolated to minimize noise and error. Level on this pin is used as
a reference for ADC and DAC.
RTC pin power supply: 3.3 V on this pin supplies the power to the RTC
peripheral.
[1] 5 V tolerant pad providing digital I/O functions with TTL levels and hysteresis.
[2] 5 V tolerant pad providing digital I/O functions (with TTL levels and hysteresis) and analog input. When configured as a ADC input,
digital section of the pad is disabled.
[3] 5 V tolerant pad providing digital I/O with TTL levels and hysteresis and analog output function. When configured as the DAC output,
digital section of the pad is disabled.
[4] Pad provides digital I/O and USB functions. It is designed in accordance with the USB specification, revision 2.0 (Full-speed and
Low-speed mode only).
[5] 5 V tolerant pad with 5 ns glitch filter providing digital I/O functions with TTL levels and hysteresis.
[6] 5 V tolerant pad with 20 ns glitch filter providing digital I/O function with TTL levels and hysteresis.
[7] Pad provides special analog functionality.
7. Functional description
7.1 Architectural overview
The ARM Cortex-M3 includes three AHB-Lite buses: the system bus, the I-code bus, and
the D-code bus (see Figure 1). The I-code and D-code core buses are faster than the
system bus and are used similarly to Tightly Coupled Memory (TCM) interfaces: one bus
dedicated for instruction fetch (I-code) and one bus for data access (D-code). The use of
two core buses allows for simultaneous operations if concurrent operations target different
devices.
The LPC1758/56/54/52/51 use a multi-layer AHB matrix to connect the ARM Cortex-M3
buses and other bus masters to peripherals in a flexible manner that optimizes
performance by allowing peripherals that are on different slaves ports of the matrix to be
accessed simultaneously by different bus masters.
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32-bit ARM Cortex-M3 microcontroller
7.2 ARM Cortex-M3 processor
The ARM Cortex-M3 is a general purpose, 32-bit microprocessor, which offers high
performance and very low power consumption. The ARM Cortex-M3 offers many new
features, including a Thumb-2 instruction set, low interrupt latency, hardware divide,
interruptable/continuable multiple load and store instructions, automatic state save and
restore for interrupts, tightly integrated interrupt controller with wakeup interrupt controller,
and multiple core buses capable of simultaneous accesses.
Pipeline techniques are employed so that all parts of the processing and memory systems
can operate continuously. Typically, while one instruction is being executed, its successor
is being decoded, and a third instruction is being fetched from memory.
The ARM Cortex-M3 processor is described in detail in the Cortex-M3 Technical
Reference Manual that can be found on official ARM website.
7.3 On-chip flash program memory
The LPC1758/56/54/52/51 contain up to 512 kB of on-chip flash memory. A new two-port
flash accelerator maximizes performance for use with the two fast AHB-Lite buses.
7.4 On-chip SRAM
The LPC1758/56/54/52/51 contain a total of up to 64 kB on-chip static RAM memory. This
includes the main 32/16/8 kB SRAM, accessible by the CPU and DMA controller on a
higher-speed bus, and up to two additional 16 kB each SRAM blocks situated on a
separate slave port on the AHB multilayer matrix.
This architecture allows CPU and DMA accesses to be spread over three separate RAMs
that can be accessed simultaneously.
7.5 Memory Protection Unit (MPU)
The LPC1758/56/54/52/51 have a Memory Protection Unit (MPU) which can be used to
improve the reliability of an embedded system by protecting critical data within the user
application.
The MPU allows separating processing tasks by disallowing access to each other's data,
disabling access to memory regions, allowing memory regions to be defined as read-only
and detecting unexpected memory accesses that could potentially break the system.
The MPU separates the memory into distinct regions and implements protection by
preventing disallowed accesses. The MPU supports up to 8 regions each of which can be
divided into 8 subregions. Accesses to memory locations that are not defined in the MPU
regions, or not permitted by the region setting, will cause the Memory Management Fault
exception to take place.
7.6 Memory map
The LPC1758/56/54/52/51 incorporate several distinct memory regions, shown in the
following figures. Figure 3 shows the overall map of the entire address space from the
user program viewpoint following reset. The interrupt vector area supports address
remapping.
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32-bit ARM Cortex-M3 microcontroller
The AHB peripheral area is 2 MB in size, and is divided to allow for up to 128 peripherals.
The APB peripheral area is 1 MB in size and is divided to allow for up to 64 peripherals.
Each peripheral of either type is allocated 16 kB of space. This allows simplifying the
address decoding for each peripheral.
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xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx
xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x
xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx
APB1 peripherals
LPC1758/56/54/52/51 memory space
reserved
4 GB
0x4010 0000
0x400F C000
0x400C 0000
0x400B C000
0x400B 8000
0x400B 4000
0x400B 0000
0x400A C000
0x400A 8000
0x400A 4000
0x400A 0000
0x4009 C000
0x4009 8000
0x4009 4000
0x4009 0000
0x4008 C000
0x4008 8000
0x4008 0000
0xFFFF FFFF
31
system control
30 - 16 not used
QEI
AHB peripherals
127- 4 not used
0x5020 0000
0x5001 0000
0x5000 C000
0x5000 8000
0x5000 4000
0x5000 0000
0xE010 0000
0xE000 0000
15
14
13
12
11
10
9
private peripheral bus
reserved
motor control PWM
not used
3
2
1
USB controller
reserved
0x5020 0000
0x5000 0000
repetitive interrupt timer
not used
AHB peripherals
reserved
GPDMA controller
(1)
(2)
0
I2S
Ethernet controller
0x4400 0000
0x4200 0000
not used
I2C2
peripheral bit band alias addressing
reserved
8
APB0 peripherals
31 - 24 not used
0x4008 0000
0x4006 0000
0x4005 C000
0x4004 C000
0x4004 8000
0x4004 4000
0x4004 0000
0x4003 C000
0x4003 8000
0x4003 4000
0x4003 0000
0x4002 C000
0x4002 8000
0x4002 4000
0x4002 0000
0x4001 C000
0x4001 8000
0x4001 4000
0x4001 0000
0x4000 C000
0x4000 8000
0x4000 4000
0x4000 0000
002aae154
UART3
UART2
Timer 3
Timer 2
7
0x4010 0000
0x4008 0000
0x4000 0000
6
APB1 peripherals
APB0 peripherals
reserved
I2C1
23
5
1 GB
22 - 19 not used
4
(1)
CAN2
(3)
18
17
16
15
14
13
12
11
10
9
0x2400 0000
0x2200 0000
3
DAC
CAN1
CAN common
CAN AF registers
CAN AF RAM
ADC
SSP0
AHB SRAM bit band alias addressing
2
1 - 0 reserved
reserved
GPIO
0x200A 0000
0x2009 C000
0x2008 4000
0x2000 4000
reserved
(1)
LPC1758/56 only
LPC1758 only
LPC1758/56/54 only
(2)
(3)
16 kB AHB SRAM1 (LPC1758)
SSP1
16 kB AHB SRAM0 (LPC1758/6/4)
pin connect
GPIO interrupts
RTC + backup registers
SPI
0.5 GB
0x2007 C000
0x1FFF 2000
reserved
8 kB boot ROM
0x1FFF 0000
0x1000 8000
0x1000 4000
0x1000 2000
0x1000 0000
0x0008 0000
0x0004 0000
0x0002 0000
8
reserved
not used
7
32 kB local static RAM (LPC1758)
16 kB local static RAM (LPC1756/4/2)
PWM1
6
not used
5
8 kB local static RAM (LPC1751)
I-code/D-code
memory space
UART1
4
UART0
reserved
3
TIMER1
2
512 kB on-chip flash (LPC1758)
256 kB on-chip flash (LPC1756)
128 kB on-chip flash (LPC1754)
TIMER0
1
0
WDT
0x0001 0000
0x0000 8000
0x0000 0000
+ 256 bytes
0x0000 0100
0x0000 0000
64 kB on-chip flash (LPC1752)
32 kB on-chip flash (LPC1751)
active interrupt vectors
0 GB
Fig 3. LPC1758/56/54/52/51 memory map
LPC1758/56/54/52/51
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
7.7 Nested Vectored Interrupt Controller (NVIC)
The NVIC is an integral part of the Cortex-M3. The tight coupling to the CPU allows for low
interrupt latency and efficient processing of late arriving interrupts.
7.7.1 Features
• Controls system exceptions and peripheral interrupts
• In the LPC1758/56/54/52/51, the NVIC supports 33 vectored interrupts
• 32 programmable interrupt priority levels, with hardware priority level masking
• Relocatable vector table
• Non-Maskable Interrupt (NMI)
• Software interrupt generation
7.7.2 Interrupt sources
Each peripheral device has one interrupt line connected to the NVIC but may have several
interrupt flags. Individual interrupt flags may also represent more than one interrupt
source.
Any pin on PORT0 and PORT2 (total of 30 pins) regardless of the selected function, can
be programmed to generate an interrupt on a rising edge, a falling edge, or both.
7.8 Pin connect block
The pin connect block allows selected pins of the microcontroller to have more than one
function. Configuration registers control the multiplexers to allow connection between the
pin and the on-chip peripherals.
Peripherals should be connected to the appropriate pins prior to being activated and prior
to any related interrupt(s) being enabled. Activity of any enabled peripheral function that is
not mapped to a related pin should be considered undefined.
Most pins can also be configured as open-drain outputs or to have a pull-up, pull-down, or
no resistor enabled.
7.9 General purpose DMA controller
The GPDMA is an AMBA AHB compliant peripheral allowing selected
LPC1758/56/54/52/51 peripherals to have DMA support.
The GPDMA enables peripheral-to-memory, memory-to-peripheral,
peripheral-to-peripheral, and memory-to-memory transactions. The source and
destination areas can each be either a memory region or a peripheral, and can be
accessed through the AHB master. The GPDMA controller allows data transfers between
the USB and Ethernet (LPC1758 only) controllers and the various on-chip SRAM areas.
The supported APB peripherals are SSP0/1, all UARTs, the I2S-bus interface, the ADC,
and the DAC. Two match signals for each timer can be used to trigger DMA transfers.
Remark: Note that the DAC is not available on the LPC1752/51, and the I2S-bus interface
is not available on the LPC1754/52/51.
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32-bit ARM Cortex-M3 microcontroller
7.9.1 Features
• Eight DMA channels. Each channel can support an unidirectional transfer.
• 16 DMA request lines.
• Single DMA and burst DMA request signals. Each peripheral connected to the DMA
Controller can assert either a burst DMA request or a single DMA request. The DMA
burst size is set by programming the DMA Controller.
• Memory-to-memory, memory-to-peripheral, peripheral-to-memory, and
peripheral-to-peripheral transfers are supported.
• Scatter or gather DMA is supported through the use of linked lists. This means that
the source and destination areas do not have to occupy contiguous areas of memory.
• Hardware DMA channel priority.
• AHB slave DMA programming interface. The DMA Controller is programmed by
writing to the DMA control registers over the AHB slave interface.
• One AHB bus master for transferring data. The interface transfers data when a DMA
request goes active.
• 32-bit AHB master bus width.
• Incrementing or non-incrementing addressing for source and destination.
• Programmable DMA burst size. The DMA burst size can be programmed to more
efficiently transfer data.
• Internal four-word FIFO per channel.
• Supports 8, 16, and 32-bit wide transactions.
• Big-endian and little-endian support. The DMA Controller defaults to little-endian
mode on reset.
• An interrupt to the processor can be generated on a DMA completion or when a DMA
error has occurred.
• Raw interrupt status. The DMA error and DMA count raw interrupt status can be read
prior to masking.
7.10 Fast general purpose parallel I/O
Device pins that are not connected to a specific peripheral function are controlled by the
GPIO registers. Pins may be dynamically configured as inputs or outputs. Separate
registers allow setting or clearing any number of outputs simultaneously. The value of the
output register may be read back as well as the current state of the port pins.
LPC1758/56/54/52/51 use accelerated GPIO functions:
• GPIO registers are a dedicated AHB peripheral and are accessed through the AHB
multilayer bus so that the fastest possible I/O timing can be achieved.
• Mask registers allow treating sets of port bits as a group, leaving other bits
unchanged.
• All GPIO registers are byte and half-word addressable.
• Entire port value can be written in one instruction.
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32-bit ARM Cortex-M3 microcontroller
Additionally, any pin on PORT0 and PORT2 (total of 42 pins) providing a digital function
can be programmed to generate an interrupt on a rising edge, a falling edge, or both. The
edge detection is asynchronous, so it may operate when clocks are not present such as
during Power-down mode. Each enabled interrupt can be used to wake up the chip from
Power-down mode.
7.10.1 Features
• Bit level set and clear registers allow a single instruction to set or clear any number of
bits in one port.
• Direction control of individual bits.
• All I/O default to inputs after reset.
• Pull-up/pull-down resistor configuration and open-drain configuration can be
programmed through the pin connect block for each GPIO pin.
7.11 Ethernet (LPC1758 only)
The Ethernet block contains a full featured 10 Mbit/s or 100 Mbit/s Ethernet MAC
designed to provide optimized performance through the use of DMA hardware
acceleration. Features include a generous suite of control registers, half or full duplex
operation, flow control, control frames, hardware acceleration for transmit retry, receive
packet filtering and wake-up on LAN activity. Automatic frame transmission and reception
with scatter-gather DMA off-loads many operations from the CPU.
The Ethernet block and the CPU share the ARM Cortex-M3 D-code and system bus
through the AHB-multilayer matrix to access the various on-chip SRAM blocks for
Ethernet data, control, and status information.
The Ethernet block interfaces between an off-chip Ethernet PHY using the Reduced MII
(RMII) protocol and the on-chip Media Independent Interface Management (MIIM) serial
bus.
The Ethernet block supports bus clock rates of up to 100 MHz.
7.11.1 Features
• Ethernet standards support:
– Supports 10 Mbit/s or 100 Mbit/s PHY devices including 10 Base-T, 100 Base-TX,
100 Base-FX, and 100 Base-T4.
– Fully compliant with IEEE standard 802.3.
– Fully compliant with 802.3x full duplex flow control and half duplex back pressure.
– Flexible transmit and receive frame options.
– Virtual Local Area Network (VLAN) frame support.
• Memory management:
– Independent transmit and receive buffers memory mapped to shared SRAM.
– DMA managers with scatter/gather DMA and arrays of frame descriptors.
– Memory traffic optimized by buffering and pre-fetching.
• Enhanced Ethernet features:
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32-bit ARM Cortex-M3 microcontroller
– Receive filtering.
– Multicast and broadcast frame support for both transmit and receive.
– Optional automatic Frame Check Sequence (FCS) insertion with Cyclic
Redundancy Check (CRC) for transmit.
– Selectable automatic transmit frame padding.
– Over-length frame support for both transmit and receive allows any length frames.
– Promiscuous receive mode.
– Automatic collision back-off and frame retransmission.
– Includes power management by clock switching.
– Wake-on-LAN power management support allows system wake-up: using the
receive filters or a magic frame detection filter.
• Physical interface:
– Attachment of external PHY chip through standard RMII interface.
– PHY register access is available via the MIIM interface.
7.12 USB interface
The Universal Serial Bus (USB) is a 4-wire bus that supports communication between a
host and one or more (up to 127) peripherals. The host controller allocates the USB
bandwidth to attached devices through a token-based protocol. The bus supports hot
plugging and dynamic configuration of the devices. All transactions are initiated by the
host controller.
The LPC1758/56/54 USB interface includes a device, Host, and OTG controller with
on-chip PHY for device and Host functions. The OTG switching protocol is supported
through the use of an external controller. Details on typical USB interfacing solutions can
be found in Section 14.1. The LPC1752/51 include a USB device controller only.
7.12.1 USB device controller
The device controller enables 12 Mbit/s data exchange with a USB Host controller. It
consists of a register interface, serial interface engine, endpoint buffer memory, and a
DMA controller. The serial interface engine decodes the USB data stream and writes data
to the appropriate endpoint buffer. The status of a completed USB transfer or error
condition is indicated via status registers. An interrupt is also generated if enabled. When
enabled, the DMA controller transfers data between the endpoint buffer and the on-chip
SRAM.
7.12.1.1 Features
• Fully compliant with USB 2.0 specification (full speed).
• Supports 32 physical (16 logical) endpoints with a 4 kB endpoint buffer RAM.
• Supports Control, Bulk, Interrupt and Isochronous endpoints.
• Scalable realization of endpoints at run time.
• Endpoint Maximum packet size selection (up to USB maximum specification) by
software at run time.
• Supports SoftConnect and GoodLink features.
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• While USB is in the Suspend mode, the LPC1758/56/54/52/51 can enter one of the
reduced power modes and wake up on USB activity.
• Supports DMA transfers with all on-chip SRAM blocks on all non-control endpoints.
• Allows dynamic switching between CPU-controlled slave and DMA modes.
• Double buffer implementation for Bulk and Isochronous endpoints.
7.12.2 USB host controller (LPC1758/56/54 only).
The host controller enables full- and low-speed data exchange with USB devices attached
to the bus. It consists of a register interface, a serial interface engine, and a DMA
controller. The register interface complies with the Open Host Controller Interface (OHCI)
specification.
7.12.2.1 Features
• OHCI compliant.
• One downstream port.
• Supports port power switching.
7.12.3 USB OTG controller (LPC1758/56/54 only).
USB OTG is a supplement to the USB 2.0 specification that augments the capability of
existing mobile devices and USB peripherals by adding host functionality for connection to
USB peripherals.
The OTG Controller integrates the host controller, device controller, and a master-only
I2C-bus interface to implement OTG dual-role device functionality. The dedicated I2C-bus
interface controls an external OTG transceiver.
7.12.3.1 Features
• Fully compliant with On-The-Go supplement to the USB 2.0 Specification, Revision
1.0a.
• Hardware support for Host Negotiation Protocol (HNP).
• Includes a programmable timer required for HNP and Session Request Protocol
(SRP).
• Supports any OTG transceiver compliant with the OTG Transceiver Specification
(CEA-2011), Rev. 1.0.
7.13 CAN controller and acceptance filters
The Controller Area Network (CAN) is a serial communications protocol which efficiently
supports distributed real-time control with a very high level of security. Its domain of
application ranges from high-speed networks to low cost multiplex wiring.
The CAN block is intended to support multiple CAN buses simultaneously, allowing the
device to be used as a gateway, switch, or router among a number of CAN buses in
industrial or automotive applications.
Remark: LPC1754/52/51 have only one CAN bus.
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7.13.1 Features
• One or two CAN controllers and buses.
• Data rates to 1 Mbit/s on each bus.
• 32-bit register and RAM access.
• Compatible with CAN specification 2.0B, ISO 11898-1.
• Global Acceptance Filter recognizes standard (11-bit) and extended-frame (29-bit)
receive identifiers for all CAN buses.
• Acceptance Filter can provide FullCAN-style automatic reception for selected
Standard Identifiers.
• FullCAN messages can generate interrupts.
7.14 12-bit ADC
The LPC1758/56/54/52/51 contain one ADC. It is a single 12-bit successive
approximation ADC with four channels and DMA support.
7.14.1 Features
• 12-bit successive approximation ADC.
• Input multiplexing among 8 pins.
• Power-down mode.
• Measurement range Vi(VREFN) to Vi(VREFP)
• 12-bit conversion rate: 1 MHz.
.
• Individual channels can be selected for conversion.
• Burst conversion mode for single or multiple inputs.
• Optional conversion on transition of input pin or Timer Match signal.
• Individual result registers for each ADC channel to reduce interrupt overhead.
• DMA support.
7.15 10-bit DAC (LPC1758/56/54 only)
The DAC allows to generate a variable analog output. The maximum output value of the
DAC is Vi(VREFP)
.
7.15.1 Features
• 10-bit DAC
• Resistor string architecture
• Buffered output
• Power-down mode
• Selectable output drive
• Dedicated conversion timer
• DMA support
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7.16 UARTs
32-bit ARM Cortex-M3 microcontroller
The LPC1758/56/54/52/51 each contain four UARTs. In addition to standard transmit and
receive data lines, UART1 also provides a full modem control handshake interface.
Support for RS-485/9-bit mode allows both software address detection and automatic
address detection using 9-bit mode.
The UARTs include a fractional baud rate generator. Standard baud rates such as
115200 Bd can be achieved with any crystal frequency above 2 MHz.
7.16.1 Features
• 16 B Receive and Transmit FIFOs.
• Register locations conform to 16C550 industry standard.
• Receiver FIFO trigger points at 1 B, 4 B, 8 B, and 14 B.
• Built-in fractional baud rate generator covering wide range of baud rates without a
need for external crystals of particular values.
• Fractional divider for baud rate control, auto baud capabilities and FIFO control
mechanism that enables software flow control implementation.
• UART1 equipped with standard modem interface signals. This module also provides
full support for hardware flow control (auto-CTS/RTS).
• Support for RS-485/9-bit mode.
• UART3 includes an IrDA mode to support infrared communication.
• All UARTs have DMA support.
7.17 SPI serial I/O controller
The LPC1758/56/54/52/51 contain one SPI controller. SPI is a full duplex serial interface
designed to handle multiple masters and slaves connected to a given bus. Only a single
master and a single slave can communicate on the interface during a given data transfer.
During a data transfer the master always sends 8 bits to 16 bits of data to the slave, and
the slave always sends 8 bits to 16 bits of data to the master.
7.17.1 Features
• Compliant with SPI specification
• Synchronous, serial, full duplex communication
• Combined SPI master and slave
• Maximum data bit rate of one eighth of the input clock rate
• 8 bits to 16 bits per transfer
7.18 SSP serial I/O controller
The LPC1758/56/54/52/51 contain two SSP controllers. The SSP controller is capable of
operation on a SPI, 4-wire SSI, or Microwire bus. It can interact with multiple masters and
slaves on the bus. Only a single master and a single slave can communicate on the bus
during a given data transfer. The SSP supports full duplex transfers, with frames of 4 bits
to 16 bits of data flowing from the master to the slave and from the slave to the master. In
practice, often only one of these data flows carries meaningful data.
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7.18.1 Features
• Compatible with Motorola SPI, 4-wire Texas Instruments SSI, and National
Semiconductor Microwire buses
• Synchronous serial communication
• Master or slave operation
• 8-frame FIFOs for both transmit and receive
• 4-bit to 16-bit frame
• DMA transfers supported by GPDMA
7.19 I2C-bus serial I/O controllers
The LPC1758/56/54/52/51 each contain three I2C-bus controllers.
The I2C-bus is bidirectional for inter-IC control using only two wires: a Serial Clock Line
(SCL) and a Serial Data Line (SDA). Each device is recognized by a unique address and
can operate as either a receiver-only device (e.g., an LCD driver) or a transmitter with the
capability to both receive and send information (such as memory). Transmitters and/or
receivers can operate in either master or slave mode, depending on whether the chip has
to initiate a data transfer or is only addressed. The I2C is a multi-master bus and can be
controlled by more than one bus master connected to it.
7.19.1 Features
• I2C1 and I2C2 use standard I/O pins with bit rates of up to 400 kbit/s (Fast I2C-bus).
• Easy to configure as master, slave, or master/slave.
• Programmable clocks allow versatile rate control.
• Bidirectional data transfer between masters and slaves.
• Multi-master bus (no central master).
• Arbitration between simultaneously transmitting masters without corruption of serial
data on the bus.
• Serial clock synchronization allows devices with different bit rates to communicate via
one serial bus.
• Serial clock synchronization can be used as a handshake mechanism to suspend and
resume serial transfer.
• The I2C-bus can be used for test and diagnostic purposes.
• All I2C-bus controllers support multiple address recognition and a bus monitor mode.
7.20 I2S-bus serial I/O controllers (LPC1758/56 only)
The I2S-bus provides a standard communication interface for digital audio applications.
The I2S-bus specification defines a 3-wire serial bus using one data line, one clock line,
and one word select signal. The basic I2S connection has one master, which is always the
master, and one slave. The I2S-bus interface provides a separate transmit and receive
channel, each of which can operate as either a master or a slave.
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7.20.1 Features
• The interface has separate input/output channels each of which can operate in master
or slave mode.
• Capable of handling 8-bit, 16-bit, and 32-bit word sizes.
• Mono and stereo audio data supported.
• The sampling frequency can range from 16 kHz to 96 kHz (16, 22.05, 32, 44.1, 48,
96) kHz.
• Support for an audio master clock.
• Configurable word select period in master mode (separately for I2S input and output).
• Two 8-word FIFO data buffers are provided, one for transmit and one for receive.
• Generates interrupt requests when buffer levels cross a programmable boundary.
• Two DMA requests, controlled by programmable buffer levels. These are connected to
the GPDMA block.
• Controls include reset, stop and mute options separately for I2S input and I2S output.
7.21 General purpose 32-bit timers/external event counters
The LPC1758/56/54/52/51 include four 32-bit timer/counters. The timer/counter is
designed to count cycles of the system derived clock or an externally-supplied clock. It
can optionally generate interrupts, generate timed DMA requests, or perform other actions
at specified timer values, based on four match registers. Each timer/counter also includes
two capture inputs to trap the timer value when an input signal transitions, optionally
generating an interrupt.
7.21.1 Features
• A 32-bit timer/counter with a programmable 32-bit prescaler.
• Counter or timer operation.
• Two 32-bit capture channels per timer, that can take a snapshot of the timer value
when an input signal transitions. A capture event may also generate an interrupt.
• Four 32-bit match registers that allow:
– Continuous operation with optional interrupt generation on match.
– Stop timer on match with optional interrupt generation.
– Reset timer on match with optional interrupt generation.
• Up to four external outputs corresponding to match registers, with the following
capabilities:
– Set LOW on match.
– Set HIGH on match.
– Toggle on match.
– Do nothing on match.
• Up to two match registers can be used to generate timed DMA requests.
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7.22 Pulse width modulator
The PWM is based on the standard Timer block and inherits all of its features, although
only the PWM function is pinned out on the LPC1758/56/54/52/51. The Timer is designed
to count cycles of the system derived clock and optionally switch pins, generate interrupts
or perform other actions when specified timer values occur, based on seven match
registers. The PWM function is in addition to these features, and is based on match
register events.
The ability to separately control rising and falling edge locations allows the PWM to be
used for more applications. For instance, multi-phase motor control typically requires three
non-overlapping PWM outputs with individual control of all three pulse widths and
positions.
Two match registers can be used to provide a single edge controlled PWM output. One
match register (PWMMR0) controls the PWM cycle rate, by resetting the count upon
match. The other match register controls the PWM edge position. Additional single edge
controlled PWM outputs require only one match register each, since the repetition rate is
the same for all PWM outputs. Multiple single edge controlled PWM outputs will all have a
rising edge at the beginning of each PWM cycle, when an PWMMR0 match occurs.
Three match registers can be used to provide a PWM output with both edges controlled.
Again, the PWMMR0 match register controls the PWM cycle rate. The other match
registers control the two PWM edge positions. Additional double edge controlled PWM
outputs require only two match registers each, since the repetition rate is the same for all
PWM outputs.
With double edge controlled PWM outputs, specific match registers control the rising and
falling edge of the output. This allows both positive going PWM pulses (when the rising
edge occurs prior to the falling edge), and negative going PWM pulses (when the falling
edge occurs prior to the rising edge).
7.22.1 Features
• LPC1758/56/54/52/51 has one PWM block with Counter or Timer operation (may use
the peripheral clock or one of the capture inputs as the clock source).
• Seven match registers allow up to 6 single edge controlled or 3 double edge
controlled PWM outputs, or a mix of both types. The match registers also allow:
– Continuous operation with optional interrupt generation on match.
– Stop timer on match with optional interrupt generation.
– Reset timer on match with optional interrupt generation.
• Supports single edge controlled and/or double edge controlled PWM outputs. Single
edge controlled PWM outputs all go high at the beginning of each cycle unless the
output is a constant low. Double edge controlled PWM outputs can have either edge
occur at any position within a cycle. This allows for both positive going and negative
going pulses.
• Pulse period and width can be any number of timer counts. This allows complete
flexibility in the trade-off between resolution and repetition rate. All PWM outputs will
occur at the same repetition rate.
• Double edge controlled PWM outputs can be programmed to be either positive going
or negative going pulses.
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• Match register updates are synchronized with pulse outputs to prevent generation of
erroneous pulses. Software must ‘release’ new match values before they can become
effective.
• May be used as a standard 32-bit timer/counter with a programmable 32-bit prescaler
if the PWM mode is not enabled.
7.23 Motor control PWM
The motor control PWM is a specialized PWM supporting 3-phase motors and other
combinations. Feedback inputs are provided to automatically sense rotor position and use
that information to ramp speed up or down. An abort input is also provided that causes the
PWM to immediately release all motor drive outputs. At the same time, the motor control
PWM is highly configurable for other generalized timing, counting, capture, and compare
applications.
7.24 Quadrature Encoder Interface (QEI)
A quadrature encoder, also known as a 2-channel incremental encoder, converts angular
displacement into two pulse signals. By monitoring both the number of pulses and the
relative phase of the two signals, the user can track the position, direction of rotation, and
velocity. In addition, a third channel, or index signal, can be used to reset the position
counter. The quadrature encoder interface decodes the digital pulses from a quadrature
encoder wheel to integrate position over time and determine direction of rotation. In
addition, the QEI can capture the velocity of the encoder wheel.
7.24.1 Features
• Tracks encoder position.
• Increments/decrements depending on direction.
• Programmable for 2x or 4x position counting.
• Velocity capture using built-in timer.
• Velocity compare function with “less than” interrupt.
• Uses 32-bit registers for position and velocity.
• Three position compare registers with interrupts.
• Index counter for revolution counting.
• Index compare register with interrupts.
• Can combine index and position interrupts to produce an interrupt for whole and
partial revolution displacement.
• Digital filter with programmable delays for encoder input signals.
• Can accept decoded signal inputs (clk and direction).
• Connected to APB.
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7.25 Repetitive Interrupt (RI) timer
The repetitive interrupt timer provides a free-running 32-bit counter which is compared to
a selectable value, generating an interrupt when a match occurs. Any bits of the
timer/compare can be masked such that they do not contribute to the match detection.
The repetitive interrupt timer can be used to create an interrupt that repeats at
predetermined intervals.
7.25.1 Features
• 32-bit counter running from PCLK. Counter can be free-running or be reset by a
generated interrupt.
• 32-bit compare value.
• 32-bit compare mask. An interrupt is generated when the counter value equals the
compare value, after masking. This allows for combinations not possible with a simple
compare.
7.26 System tick timer
The ARM Cortex-M3 includes a system tick timer (SYSTICK) that is intended to generate
a dedicated SYSTICK exception at a 10 ms interval. In the LPC1758/56/54/52/51, this
timer can be clocked from the internal AHB clock or from a device pin.
7.27 Watchdog timer
The purpose of the watchdog is to reset the microcontroller within a reasonable amount of
time if it enters an erroneous state. When enabled, the watchdog will generate a system
reset if the user program fails to ‘feed’ (or reload) the watchdog within a predetermined
amount of time.
7.27.1 Features
• Internally resets chip if not periodically reloaded.
• Debug mode.
• Enabled by software but requires a hardware reset or a watchdog reset/interrupt to be
disabled.
• Incorrect/Incomplete feed sequence causes reset/interrupt if enabled.
• Flag to indicate watchdog reset.
• Programmable 32-bit timer with internal prescaler.
• Selectable time period from (Tcy(WDCLK) × 256 × 4) to (Tcy(WDCLK) × 232 × 4) in
multiples of Tcy(WDCLK) × 4.
• The Watchdog Clock (WDCLK) source can be selected from the Internal RC (IRC)
oscillator or the APB peripheral clock. This gives a wide range of potential timing
choices of Watchdog operation under different power reduction conditions. It also
provides the ability to run the WDT from an entirely internal source that is not
dependent on an external crystal and its associated components and wiring for
increased reliability.
• Includes lock/safe feature.
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7.28 RTC and backup registers
The RTC is a set of counters for measuring time when system power is on, and optionally
when it is off. The RTC on the LPC1758/56/54/52/51 is designed to have extremely low
power consumption, i.e. less than 1 µA. The RTC will typically run from the main chip
power supply, conserving battery power while the rest of the device is powered up. When
operating from a battery, the RTC will continue working down to 2.1 V. Battery power can
be provided from a standard 3 V Lithium button cell.
An ultra-low power 32 kHz oscillator will provide a 1 Hz clock to the time counting portion
of the RTC, moving most of the power consumption out of the time counting function.
The RTC includes a calibration mechanism to allow fine-tuning the count rate in a way that
will provide less than 1 second per day error when operated at a constant voltage and
temperature. A clock output function (see Section 7.29.4) makes measuring the oscillator
rate easy and accurate.
The RTC contains a small set of backup registers (64 bytes) for holding data while the
main part of the LPC1758/56/54/52/51 is powered off.
The RTC includes an alarm function that can wake up the LPC1758/56/54/52/51 from all
reduced power modes with a time resolution of 1 s.
7.28.1 Features
• Measures the passage of time to maintain a calendar and clock.
• Ultra low power design to support battery powered systems.
• Provides Seconds, Minutes, Hours, Day of Month, Month, Year, Day of Week, and Day
of Year.
• Dedicated power supply pin can be connected to a battery or to the main 3.3 V.
• Periodic interrupts can be generated from increments of any field of the time registers.
• Backup registers (64 bytes) powered by VBAT.
• RTC power supply is isolated from the rest of the chip.
7.29 Clocking and power control
7.29.1 Crystal oscillators
The LPC1758/56/54/52/51 include three independent oscillators. These are the main
oscillator, the IRC oscillator, and the RTC oscillator. Each oscillator can be used for more
than one purpose as required in a particular application. Any of the three clock sources
can be chosen by software to drive the main PLL and ultimately the CPU.
Following reset, the LPC1758/56/54/52/51 will operate from the Internal RC oscillator until
switched by software. This allows systems to operate without any external crystal and the
bootloader code to operate at a known frequency.
See Figure 4 for an overview of the LPC1758/56/54/52/51 clock generation.
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LPC17xx
usbclk
(48 MHz)
USB PLL
USB
CLOCK
DIVIDER
MAIN
OSCILLATOR
USB BLOCK
MAIN PLL
pllclk
USB clock config
(USBCLKCFG)
USB PLL enable
cclk
CPU
CLOCK
DIVIDER
system
clock
select
ARM
CORTEX-M3
main PLL enable
ETHERNET
BLOCK
(CLKSRCSEL)
CPU clock config
(CCLKCFG)
INTERNAL
RC
OSCILLATOR
DMA
GPIO
NVIC
WATCHDOG
TIMER
CCLK/8
CCLK/6
CCLK/4
CCLK/2
CCLK
32 kHz
PERIPHERAL
CLOCK
GENERATOR
pclk
WDT
APB peripherals
RTC
rtclk = 1Hz
OSCILLATOR
REAL-TIME
CLOCK
002aad947
Fig 4. LPC1758/56/54/52/51 clocking generation block diagram
7.29.1.1 Internal RC oscillator
The IRC may be used as the clock source for the WDT, and/or as the clock that drives the
PLL and subsequently the CPU. The nominal IRC frequency is 4 MHz. The IRC is
trimmed to 1 % accuracy over the entire voltage and temperature range.
Upon power-up or any chip reset, the LPC1758/56/54/52/51 use the IRC as the clock
source. Software may later switch to one of the other available clock sources.
7.29.1.2 Main oscillator
The main oscillator can be used as the clock source for the CPU, with or without using the
PLL. The main oscillator also provides the clock source for the dedicated USB PLL.
The main oscillator operates at frequencies of 1 MHz to 25 MHz. This frequency can be
boosted to a higher frequency, up to the maximum CPU operating frequency, by the main
PLL. The clock selected as the PLL input is PLLCLKIN. The ARM processor clock
frequency is referred to as CCLK elsewhere in this document. The frequencies of
PLLCLKIN and CCLK are the same value unless the PLL is active and connected. The
clock frequency for each peripheral can be selected individually and is referred to as
PCLK. Refer to Section 7.29.2 for additional information.
7.29.1.3 RTC oscillator
The RTC oscillator can be used as the clock source for the RTC block, the main PLL,
and/or the CPU.
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7.29.2 Main PLL (PLL0)
The PLL0 accepts an input clock frequency in the range of 32 kHz to 25 MHz. The input
frequency is multiplied up to a high frequency, then divided down to provide the actual
clock used by the CPU and/or the USB block.
The PLL0 input, in the range of 32 kHz to 25 MHz, may initially be divided down by a value
‘N’, which may be in the range of 1 to 256. This input division provides a wide range of
output frequencies from the same input frequency.
Following the PLL0 input divider is the PLL0 multiplier. This can multiply the input divider
output through the use of a Current Controlled Oscillator (CCO) by a value ‘M’, in the
range of 1 through 32768. The resulting frequency must be in the range of 275 MHz to
550 MHz. The multiplier works by dividing the CCO output by the value of M, then using a
phase-frequency detector to compare the divided CCO output to the multiplier input. The
error value is used to adjust the CCO frequency.
The PLL0 is turned off and bypassed following a chip Reset and by entering Power-down
mode. PLL0 is enabled by software only. The program must configure and activate the
PLL0, wait for the PLL0 to lock, and then connect to the PLL0 as a clock source.
7.29.3 USB PLL (PLL1)
The LPC1758/56/54/52/51 contain a second, dedicated USB PLL1 to provide clocking for
the USB interface.
The PLL1 receives its clock input from the main oscillator only and provides a fixed
48 MHz clock to the USB block only. The PLL1 is disabled and powered off on reset. If the
PLL1 is left disabled, the USB clock will be supplied by the 48 MHz clock from the main
PLL0.
The PLL1 accepts an input clock frequency in the range of 10 MHz to 25 MHz only. The
input frequency is multiplied up the range of 48 MHz for the USB clock using a Current
Controlled Oscillators (CCO). It is insured that the PLL1 output has a 50% duty cycle.
7.29.4 RTC clock output
The LPC1758/56/54/52/51 feature a clock output function intended for synchronizing with
external devices and for use during system development to allow checking the internal
clocks CCLK, IRC clock, main crystal, RTC clock, and USB clock in the outside world. The
RTC clock output allows tuning the RTC frequency without probing the pin, which would
distort the results.
7.29.5 Wake-up timer
The LPC1758/56/54/52/51 begin operation at power-up and when awakened from
Power-down mode by using the 4 MHz IRC oscillator as the clock source. This allows chip
operation to resume quickly. If the main oscillator or the PLL is needed by the application,
software will need to enable these features and wait for them to stabilize before they are
used as a clock source.
When the main oscillator is initially activated, the wake-up timer allows software to ensure
that the main oscillator is fully functional before the processor uses it as a clock source
and starts to execute instructions. This is important at power on, all types of Reset, and
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whenever any of the aforementioned functions are turned off for any reason. Since the
oscillator and other functions are turned off during Power-down mode, any wake-up of the
processor from Power-down mode makes use of the wake-up Timer.
The Wake-up Timer monitors the crystal oscillator to check whether it is safe to begin
code execution. When power is applied to the chip, or when some event caused the chip
to exit Power-down mode, some time is required for the oscillator to produce a signal of
sufficient amplitude to drive the clock logic. The amount of time depends on many factors,
including the rate of VDD(3V3) ramp (in the case of power on), the type of crystal and its
electrical characteristics (if a quartz crystal is used), as well as any other external circuitry
(e.g., capacitors), and the characteristics of the oscillator itself under the existing ambient
conditions.
7.29.6 Power control
The LPC1758/56/54/52/51 support a variety of power control features. There are four
special modes of processor power reduction: Sleep mode, Deep-sleep mode,
Power-down mode, and Deep power-down mode. The CPU clock rate may also be
controlled as needed by changing clock sources, reconfiguring PLL values, and/or altering
the CPU clock divider value. This allows a trade-off of power versus processing speed
based on application requirements. In addition, Peripheral Power Control allows shutting
down the clocks to individual on-chip peripherals, allowing fine tuning of power
consumption by eliminating all dynamic power use in any peripherals that are not required
for the application. Each of the peripherals has its own clock divider which provides even
better power control.
Integrated PMU (Power Management Unit) automatically adjust internal regulators to
minimize power consumption during Sleep, Deep sleep, Power-down, and Deep
power-down modes.
The LPC1758/56/54/52/51 also implement a separate power domain to allow turning off
power to the bulk of the device while maintaining operation of the RTC and a small set of
registers for storing data during any of the power-down modes.
7.29.6.1 Sleep mode
When Sleep mode is entered, the clock to the core is stopped. Resumption from the Sleep
mode does not need any special sequence but re-enabling the clock to the ARM core.
In Sleep mode, execution of instructions is suspended until either a Reset or interrupt
occurs. Peripheral functions continue operation during Sleep mode and may generate
interrupts to cause the processor to resume execution. Sleep mode eliminates dynamic
power used by the processor itself, memory systems and related controllers, and internal
buses.
7.29.6.2 Deep-sleep mode
In Deep-sleep mode, the oscillator is shut down and the chip receives no internal clocks.
The processor state and registers, peripheral registers, and internal SRAM values are
preserved throughout Deep-sleep mode and the logic levels of chip pins remain static.
The output of the IRC is disabled but the IRC is not powered down for a fast wake-up later.
The RTC oscillator is not stopped because the RTC interrupts may be used as the
wake-up source. The PLL is automatically turned off and disconnected. The CCLK and
USB clock dividers automatically get reset to zero.
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The Deep-sleep mode can be terminated and normal operation resumed by either a
Reset or certain specific interrupts that are able to function without clocks. Since all
dynamic operation of the chip is suspended, Deep-sleep mode reduces chip power
consumption to a very low value. Power to the flash memory is left on in Deep-sleep
mode, allowing a very quick wake-up.
On wake-up from Deep-sleep mode, the code execution and peripherals activities will
resume after 4 cycles expire if the IRC was used before entering Deep-sleep mode. If the
main external oscillator was used, the code execution will resume when 4096 cycles
expire. PLL and clock dividers need to be reconfigured accordingly.
7.29.6.3 Power-down mode
Power-down mode does everything that Deep-sleep mode does, but also turns off the
power to the IRC oscillator and the flash memory. This saves more power but requires
waiting for resumption of flash operation before execution of code or data access in the
flash memory can be accomplished.
On the wake-up of Power-down mode, if the IRC was used before entering Power-down
mode, it will take IRC 60 µs to start-up. After this 4 IRC cycles will expire before the code
execution can then be resumed if the code was running from SRAM. In the meantime, the
flash wake-up timer then counts 4 MHz IRC clock cycles to make the 100 µs flash start-up
time. When it times out, access to the flash will be allowed. Users need to reconfigure the
PLL and clock dividers accordingly.
7.29.6.4 Deep power-down mode
The Deep power-down mode can only be entered from the RTC block. In Deep
power-down mode, power is shut off to the entire chip with the exception of the RTC
module and the RESET pin.
The LPC1758/56/54/52/51 can wake up from Deep power-down mode via the RESET pin
or an alarm match event of the RTC.
7.29.6.5 Wakeup interrupt controller
The Wakeup Interrupt Controller (WIC) allows the CPU to automatically wake up from any
enabled priority interrupt that can occur while the clocks are stopped in Deep sleep,
Power-down, and Deep power-down modes.
The Wake-up controller (WIC) works in connection with the Nested Vectored Interrupt
Controller (NVIC). When the CPU enters Deep sleep, Power-down, or Deep power-down
mode, the NVIC sends a mask of the current interrupt situation to the WIC.This mask
includes all of the interrupts that are both enabled and of sufficient priority to be serviced
immediately. With this information, the WIC simply notices when one of the interrupts has
occurred and then it wakes up the CPU.
The Wake-up controller (WIC) eliminates the need to periodically wake up the CPU and
poll the interrupts resulting in additional power savings.
7.29.7 Peripheral power control
A Power Control for Peripherals feature allows individual peripherals to be turned off if
they are not needed in the application, resulting in additional power savings.
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7.29.8 Power domains
The LPC1758/56/54/52/51 provide two independent power domains that allow the bulk of
the device to have power removed while maintaining operation of the RTC and the backup
Registers.
On the LPC1758/56/54/52/51, I/O pads are powered by the 3.3 V (VDD(3V3)) pins, while
the VDD(REG)(3V3) pin powers the on-chip voltage regulator which in turn provides power to
the CPU and most of the peripherals.
Depending on the LPC1758/56/54/52/51 application, a design can use two power options
to manage power consumption.
The first option assumes that power consumption is not a concern and the design ties the
VDD(3V3) and VDD(REG)(3V3) pins together. This approach requires only one 3.3 V power
supply for both pads, the CPU, and peripherals. While this solution is simple, it does not
support powering down the I/O pad ring “on the fly” while keeping the CPU and
peripherals alive.
The second option uses two power supplies; a 3.3 V supply for the I/O pads (VDD(3V3)) and
a dedicated 3.3 V supply for the CPU (VDD(REG)(3V3)). Having the on-chip voltage regulator
powered independently from the I/O pad ring enables shutting down of the I/O pad power
supply “on the fly”, while the CPU and peripherals stay active.
The VBAT pin supplies power only to the RTC domain. The RTC requires a minimum of
power to operate, which can be supplied by an external battery. The device core power
(VDD(REG)(3V3)) is used to operate the RTC whenever VDD(REG)(3V3) is present. Therefore,
there is no power drain from the RTC battery when VDD(REG)(3V3) is available.
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LPC17xx
V
to I/O pads
DD(3V3)
to core
V
SS
3.3 V REGULATOR
to memories,
peripherals,
oscillators,
PLLs
V
DD(REG)(3V3)
MAIN POWER DOMAIN
ULTRA-LOW
POWER
REGULATOR
POWER
SELECTOR
VBAT
BACKUP REGISTERS
REAL-TIME CLOCK
RTCX1
RTCX2
32 kHz
OSCILLATOR
RTC POWER DOMAIN
DAC
ADC
V
DDA
VREFP
VREFN
V
SSA
ADC POWER DOMAIN
002aad978
Fig 5. Power distribution
7.30 System control
7.30.1 Reset
Reset has four sources on the LPC1758/56/54/52/51: the RESET pin, the Watchdog
reset, power-on reset (POR), and the BrownOut Detection (BOD) circuit. The RESET pin
is a Schmitt trigger input pin. Assertion of chip Reset by any source, once the operating
voltage attains a usable level, starts the Wake-up timer (see description in
Section 7.29.5), causing reset to remain asserted until the external Reset is de-asserted,
the oscillator is running, a fixed number of clocks have passed, and the flash controller
has completed its initialization.
When the internal Reset is removed, the processor begins executing at address 0, which
is initially the Reset vector mapped from the Boot Block. At that point, all of the processor
and peripheral registers have been initialized to predetermined values.
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7.30.2 Brownout detection
The LPC1758/56/54/52/51 include 2-stage monitoring of the voltage on the VDD(REG)(3V3)
pins. If this voltage falls below 2.95 V, the BOD asserts an interrupt signal to the Vectored
Interrupt Controller. This signal can be enabled for interrupt in the Interrupt Enable
Register in the NVIC in order to cause a CPU interrupt; if not, software can monitor the
signal by reading a dedicated status register.
The second stage of low-voltage detection asserts reset to inactivate the
LPC1758/56/54/52/51 when the voltage on the VDD(REG)(3V3) pins falls below 2.65 V. This
reset prevents alteration of the flash as operation of the various elements of the chip
would otherwise become unreliable due to low voltage. The BOD circuit maintains this
reset down below 1 V, at which point the power-on reset circuitry maintains the overall
reset.
Both the 2.95 V and 2.65 V thresholds include some hysteresis. In normal operation, this
hysteresis allows the 2.95 V detection to reliably interrupt, or a regularly executed event
loop to sense the condition.
7.30.3 Code security (Code Read Protection - CRP)
This feature of the LPC1758/56/54/52/51 allows user to enable different levels of security
in the system so that access to the on-chip flash and use of the JTAG and ISP can be
restricted. When needed, CRP is invoked by programming a specific pattern into a
dedicated flash location. IAP commands are not affected by the CRP.
There are three levels of the Code Read Protection.
CRP1 disables access to chip via the JTAG and allows partial flash update (excluding
flash sector 0) using a limited set of the ISP commands. This mode is useful when CRP is
required and flash field updates are needed but all sectors can not be erased.
CRP2 disables access to chip via the JTAG and only allows full flash erase and update
using a reduced set of the ISP commands.
Running an application with level CRP3 selected fully disables any access to chip via the
JTAG pins and the ISP. This mode effectively disables ISP override using P2[10] pin, too. It
is up to the user’s application to provide (if needed) flash update mechanism using IAP
calls or call reinvoke ISP command to enable flash update via UART0.
CAUTION
If level three Code Read Protection (CRP3) is selected, no future factory testing can be
performed on the device.
7.30.4 APB interface
The APB peripherals are split into two separate APB buses in order to distribute the bus
bandwidth and thereby reducing stalls caused by contention between the CPU and the
GPDMA controller.
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7.30.5 AHB multilayer matrix
The LPC1758/56/54/52/51 use an AHB multilayer matrix. This matrix connects the
instruction (I-code) and data (D-code) CPU buses of the ARM Cortex-M3 to the flash
memory, the main (32 kB) static RAM, and the Boot ROM. The GPDMA can also access
all of these memories. The peripheral DMA controllers, Ethernet (LPC1758 only) and
USB, can access all SRAM blocks. Additionally, the matrix connects the CPU system bus
and all of the DMA controllers to the various peripheral functions.
7.30.6 External interrupt inputs
The LPC1758/56/54/52/51 include up to 30 edge sensitive interrupt inputs combined with
one level sensitive external interrupt input as selectable pin function. The external
interrupt input can optionally be used to wake up the processor from Power-down mode.
7.30.7 Memory mapping control
The Cortex-M3 incorporates a mechanism that allows remapping the interrupt vector table
to alternate locations in the memory map. This is controlled via the Vector Table Offset
Register contained in the NVIC.
The vector table may be located anywhere within the bottom 1 GB of Cortex-M3 address
space. The vector table must be located on a 128 word (512 byte) boundary because the
NVIC on the LPC1758/56/54/52/51 is configured for 128 total interrupts.
7.31 Emulation and debugging
Debug and trace functions are integrated into the ARM Cortex-M3. Serial wire debug and
trace functions are supported in addition to a standard JTAG debug and parallel trace
functions. The ARM Cortex-M3 is configured to support up to eight breakpoints and four
watch points.
8. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).[1]
Symbol
Parameter
Conditions
Min
Max
Unit
VDD(3V3)
supply voltage (3.3 V)
core and external
rail
2.4
3.6
V
VDD(REG)(3V3) regulator supply voltage (3.3 V)
2.4
3.6
V
V
V
V
V
VDDA
analog 3.3 V pad supply voltage
input voltage on pin VBAT
input voltage on pin VREFP
analog input voltage
−0.5
−0.5
−0.5
−0.5
+4.6
+4.6
+4.6
+5.1
Vi(VBAT)
Vi(VREFP)
VIA
for the RTC
on ADC related
pins
[2]
VI
input voltage
5 V tolerant I/O
pins; only valid
when the VDD(3V3)
supply voltage is
present
−0.5
+6.0
V
[2][3]
other I/O pins
−0.5
VDD(3V3)
0.5
+
V
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32-bit ARM Cortex-M3 microcontroller
Table 4.
Limiting values …continued
In accordance with the Absolute Maximum Rating System (IEC 60134).[1]
Symbol
IDD
Parameter
Conditions
Min
Max
100
100
100
Unit
mA
mA
mA
[4]
[4]
supply current
ground current
I/O latch-up current
per supply pin
per ground pin
-
-
-
ISS
Ilatch
−(0.5VDD(3V3)) < VI
< (1.5VDD(3V3));
Tj < 125 °C
[5]
[6]
Tstg
storage temperature
−65
+150
1.5
°C
Ptot(pack)
total power dissipation (per package)
based on package
heat transfer, not
device power
-
W
consumption
Vesd
electrostatic discharge voltage
human body
−2000
+2000
V
model; all pins
[1] The following applies to the limiting values:
a) This product includes circuitry specifically designed for the protection of its internal devices from the damaging effects of excessive
static charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying greater than the rated maximum.
b) Parameters are valid over operating temperature range unless otherwise specified. All voltages are with respect to VSS unless
otherwise noted.
[2] Including voltage on outputs in 3-state mode.
[3] Not to exceed 4.6 V.
[4] The peak current is limited to 25 times the corresponding maximum current.
[5] Dependent on package type.
[6] Human body model: equivalent to discharging a 100 pF capacitor through a 1.5 kΩ series resistor.
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9. Thermal characteristics
9.1 Thermal characteristics
The average chip junction temperature, TJ (°C), can be calculated using the following
equation:
TJ = Tamb + (PD × Rth( j – a)
)
(1)
• Tamb = ambient temperature (°C),
• Rth(j-a) = the package junction-to-ambient thermal resistance (°C/W)
• PD = sum of internal and I/O power dissipation
The internal power dissipation is the product of IDD and VDD. The I/O power dissipation of
the I/O pins is often small and many times can be negligible. However it can be significant
in some applications.
Table 5.
Thermal characteristics
VDD = 2.4 V to 3.6 V; Tamb = −40 °C to +85 °C unless otherwise specified;
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Rth(j-a)
thermal resistance from
junction to ambient
LQFP80 package
-
<tbd>
-
°C/W
Tj(max)
maximum junction
temperature
-
-
150
°C
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10. Static characteristics
Table 6.
Static characteristics
Tamb = −40 °C to +85 °C, unless otherwise specified.
Symbol
Parameter
Conditions
Min
2.4
2.4
Typ[1]
3.3
Max
3.6
Unit
V
VDD(3V3)
supply voltage (3.3 V)
core and external rail
VDD(REG)(3V3)
regulator supply voltage
(3.3 V)
3.3
3.6
V
VDDA
analog 3.3 V pad supply
voltage
2.7
2.1
2.7
3.3
3.3
3.3
3.6
V
V
V
[2]
Vi(VBAT)
Vi(VREFP)
input voltage on pin
VBAT
3.6
input voltage on pin
VREFP
VDDA
Standard port pins, RESET, RTC
IIL
LOW-level input current VI = 0 V; on-chip pull-up
resistor disabled
-
-
-
-
3
3
µA
µA
IIH
HIGH-level input current VI = VDD(3V3); on-chip
pull-down resistor
disabled
IOZ
OFF-state output
current
VO = 0 V; VO = VDD(3V3)
on-chip pull-up/down
resistors disabled
;
-
-
-
3
µA
[3][4][5]
VI
input voltage
pin configured to provide
a digital function
0
5.5
V
VO
output voltage
output active
0
-
-
VDD(3V3)
-
V
V
VIH
HIGH-level input
voltage
2.0
VIL
LOW-level input voltage
hysteresis voltage
-
-
-
0.8
V
V
V
Vhys
VOH
0.4
-
-
-
[6]
[6]
[6]
[6]
[7]
[7]
HIGH-level output
voltage
IOH = −4 mA
VDD(3V3)
0.4
−
VOL
IOH
LOW-level output
voltage
IOL = 4 mA
-
-
-
-
-
-
0.4
-
V
HIGH-level output
current
VOH = VDD(3V3) − 0.4 V
VOL = 0.4 V
−4
4
-
mA
mA
mA
mA
IOL
LOW-level output
current
-
IOHS
IOLS
HIGH-level short-circuit VOH = 0 V
output current
−45
50
LOW-level short-circuit VOL = VDDA
output current
-
Ipd
Ipu
pull-down current
pull-up current
VI = 5 V
10
−15
0
50
−50
0
150
−85
0
µA
µA
µA
VI = 0 V
VDD(3V3) < VI < 5 V
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Table 6.
Static characteristics …continued
Tamb = −40 °C to +85 °C, unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ[1]
Max
Unit
IDD(REG)(3V3)
regulator supply current active mode;
(3.3 V)
VDD(REG)(3V3) = 3.3 V;
T
amb = 25 °C; code
while(1){}
executed from flash; all
peripherals enabled
CCLK = 10 MHz
CCLK = 100 MHz
-
-
-
<tbd>
<tbd>
<tbd>
-
-
-
mA
mA
µA
sleep mode;
VDD(REG)(3V3) = 3.3 V;
T
amb = 25 °C
deep sleep mode;
DD(REG)(3V3) = 3.3 V;
amb = 25 °C
-
-
-
<tbd>
<tbd>
<tbd>
-
-
-
µA
µA
µA
V
T
power-down mode;
VDD(REG)(3V3) = 3.3 V;
T
amb = 25 °C
deep power-down mode;
VDD(REG)(3V3) = 3.3 V;
T
amb = 25 °C
RTC running;
DD(REG)(3V3) present
RTC running;
[8]
[8]
IBATact
active mode battery
supply current
-
-
V
0.8
-
-
µA
µA
VDD(REG)(3V3) not present
< 0.8
Oscillator pins
Vi(XTAL1)
input voltage on pin
XTAL1
0
0
0
0
-
-
-
-
1.8
1.8
1.8
1.8
V
V
V
V
Vo(XTAL2)
Vi(RTCX1)
Vo(RTCX2)
output voltage on pin
XTAL2
input voltage on pin
RTCX1
output voltage on pin
RTCX2
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Table 6.
Static characteristics …continued
Tamb = −40 °C to +85 °C, unless otherwise specified.
Symbol
USB pins
IOZ
Parameter
Conditions
Min
Typ[1]
Max
Unit
OFF-state output
current
0 V < VI < 3.3 V
-
-
±10
µA
VBUS
VDI
bus supply voltage
-
-
-
5.25
-
V
V
differential input
|(D+) − (D−)|
0.2
sensitivity voltage
VCM
differential common
mode voltage range
includes VDI range
0.8
0.8
-
-
2.5
2.0
V
V
Vth(rs)se
single-ended receiver
switching threshold
voltage
VOL
LOW-level output
voltage for
low-/full-speed
RL of 1.5 kΩ to 3.6 V
RL of 15 kΩ to GND
-
-
-
0.18
3.5
V
V
VOH
HIGH-level output
voltage (driven) for
low-/full-speed
2.8
Ctrans
ZDRV
transceiver capacitance pin to GND
-
-
-
20
pF
[10]
driver output
with 33 Ω series resistor;
36
44.1
Ω
impedance for driver
which is not high-speed
capable
steady state drive
Rpu
pull-up resistance
SoftConnect = ON
1.1
-
1.9
kΩ
[1] Typical ratings are not guaranteed. The values listed are at room temperature (25 °C), nominal supply voltages.
[2] The RTC typically fails when Vi(VBAT) drops below 1.6 V.
[3] Including voltage on outputs in 3-state mode.
[4] VDD(3V3) supply voltages must be present.
[5] 3-state outputs go into 3-state mode when VDD(3V3) is grounded.
[6] Accounts for 100 mV voltage drop in all supply lines.
[7] Allowed as long as the current limit does not exceed the maximum current allowed by the device.
[8] On pin VBAT.
[9] To VSS
.
[10] Includes external resistors of 18 Ω ± 1 % on D+ and D−.
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10.1 Power consumption
001aac984
X
X
X
X
X
X
X
(X)
<tbd>
X
X
X
X
X
X (X)
Conditions: Tamb = 25 °C; active mode entered executing code from flash; core voltage 2.7 V; all
peripherals enabled but not configured to run.
Fig 6. Regulator supply current at different core frequencies in active mode
001aac984
X
X
(X)
X
X
<tbd>
X
X
X
X
X
X
X
X
X (X)
Conditions: Tamb = 25 °C; active mode entered executing code from flash; all peripherals enabled
but not configured to run.
Fig 7. Regulator supply current at different core voltages in active mode
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001aac984
X
X
X
X
X
X
X
(X)
<tbd>
X
X
X
X
X
X (X)
Conditions: active mode entered executing code from flash; core voltage 2.7 V; all peripherals
enabled but not configured to run.
Fig 8. Regulator supply current at different temperatures in active mode
001aac984
X
X
X
X
X
X
X
(X)
<tbd>
X
X
X
X
X
X (X)
Conditions: active mode entered executing code from flash; Tamb = 25 °C; RTC running;
Fig 9. Battery supply current for different core voltages in active mode
Table 7.
Typical peripheral current consumption
Core voltage 3.3 V; Tamb = 25 °C; all measurements in µA; PCLK = CCLK⁄8; all peripherals enabled.
Peripheral
CCLK = 10 MHz
CCLK = 100 MHz
active mode sleep mode active mode sleep mode
Timer0
Timer1
Timer2
Timer3
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
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Objective data sheet
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LPC1758/56/54/52/51
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
Table 7.
Typical peripheral current consumption …continued
Core voltage 3.3 V; Tamb = 25 °C; all measurements in µA; PCLK = CCLK⁄8; all peripherals enabled.
Peripheral
CCLK = 10 MHz
CCLK = 100 MHz
active mode sleep mode active mode sleep mode
RIT
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
UART0
UART1
UART2
UART3
PWM1
Motor control PWM
Quadrature encoder
I2C1-bus
I2C2-bus
I2S-bus interface (LPC1758/56 only)
SPI
SSP0
SSP1
CAN1
CAN2 (LPC1758/56 only)
ADC
DAC (LPC1758/56/54 only)
USB
Ethernet (LPC1758 only)
GPDMA controller
Table 8.
Typical RTC power consumption
Vi(VBAT) = 3.3 V; Tamb = 25 °C; all measurements in µA; RTC clock = 1 Hz; VDD(REG)(3V3) not present.
Power modes
active
sleep
deep-sleep
power-down deep
power-down
IBAT in µA
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
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Objective data sheet
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NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
10.2 Electrical pin characteristics
001aac984
X
X
X
X
X
X
X
(X)
<tbd>
X
X
X
X
X
X (X)
Measured on pins Pn.m; VDD(3V3) = x.x V.
Fig 10. Typical LOW-level output IOL current versus LOW-level output VOL
001aac984
X
X
X
X
X
X
X
(X)
<tbd>
X
X
X
X
X
X (X)
Measured on pins Pn.m; VDD(3V3) = x.x V.
Fig 11. Typical HIGH-level output IOH current versus HIGH-level output voltage VOH
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NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
001aac984
X
X
X
X
X
X
X
(X)
<tbd>
X
X
X
X
X
X (X)
Measured on pins Pn.m; VDD(3V3) = x.x V.
Fig 12. Typical pull-up current Ipu versus input voltage Vi
001aac984
X
X
(X)
X
X
<tbd>
X
X
X
X
X
X
X
X
X (X)
Measured on pins Pn.m; VDD(3V3) = x.x V.
Fig 13. Typical pull-down current Ipd versus input voltage Vi
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NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
11. Dynamic characteristics
11.1 Flash memory
Table 9.
Flash characteristics
Tamb = −40 °C to +85 °C, unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Nendu
endurance
−40 °C to +85 °C
−25 °C to +85 °C
10000
100000
10
-
-
-
-
-
-
cycles
cycles
years
tret
retention time
powered; < 100 cycles;
−40 °C to +85 °C
11.2 External clock
Table 10. Dynamic characteristic: external clock
Tamb = −40 °C to +85 °C; VDD(3V3) over specified ranges.[1]
Symbol
fosc
Parameter
Conditions
Min
Typ[2]
Max
Unit
MHz
ns
oscillator frequency
clock cycle time
clock HIGH time
clock LOW time
clock rise time
clock fall time
1
-
-
-
-
-
-
25
Tcy(clk)
tCHCX
tCLCX
tCLCH
tCHCL
42
1000
T
T
-
cy(clk) × 0.4
-
ns
cy(clk) × 0.4
-
ns
5
5
ns
-
ns
[1] Parameters are valid over operating temperature range unless otherwise specified.
[2] Typical ratings are not guaranteed. The values listed are at room temperature (25 °C), nominal supply voltages.
t
CHCX
t
t
t
CHCL
CLCX
CLCH
T
cy(clk)
002aaa907
Fig 14. External clock timing (with an amplitude of at least Vi(RMS) = 200 mV)
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NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
11.3 Internal oscillators
Table 11. Dynamic characteristic: internal oscillators
Tamb = −40 °C to +85 °C; VDD(3V3) over specified ranges.[1]
Symbol
fosc(RC)
fi(RTC)
Parameter
Conditions
Min
Typ[2]
<tbd>
<tbd>
Max
Unit
MHz
MHz
internal RC oscillator frequency
RTC input frequency
-
-
<tbd>
<tbd>
<tbd>
<tbd>
[1] Parameters are valid over operating temperature range unless otherwise specified.
[2] Typical ratings are not guaranteed. The values listed are at room temperature (25 °C), nominal supply voltages.
001aac984
X
X
(X)
X
X
<tbd>
X
X
X
X
X
X
X
X
X (X)
conditions: <tbd>
Fig 15. Internal RC oscillator frequency vs. temperature
001aac984
X
X
(X)
X
X
<tbd>
X
X
X
X
X
X
X
X
X (X)
conditions: <tbd>
Fig 16. Internal RC oscillator frequency vs. core voltage
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Objective data sheet
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NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
11.4 I2C-bus
Table 12. Dynamic characteristic: I2C-bus pins
Tamb = −40 °C to +85 °C; VDD(3V3) over specified ranges.[1]
Symbol
Parameter
Conditions
Min
Typ[2]
Max
Unit
I2C-bus pins (P0[27] and P0[28])
[3]
tf(o)
tr
output fall time
rise time
VIH to VIL
20 + 0.1 × Cb
<tbd>
-
-
ns
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
tf
fall time
<tbd>
tBUF
bus free time between a STOP and
START condition
-
<tbd>
tLOW
LOW period of the SCL clock
-
-
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
tHD;STA
hold time (repeated) START
condition
tHIGH
HIGH period of the SCL clock
data set-up time
-
-
-
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
tSU;DAT
tSU;STA
set-up time for a repeated START
condition
tSU;STO
set-up time for STOP condition
-
<tbd>
<tbd>
<tbd>
[1] Parameters are valid over operating temperature range unless otherwise specified.
[2] Typical ratings are not guaranteed. The values listed are at room temperature (25 °C), nominal supply voltages.
[3] Bus capacitance Cb in pF, from 10 pF to 400 pF.
SDA
t
t
t
t
t
HD;STA
BUF
LOW
r
f
SCL
P
P
S
S
t
t
t
t
t
t
SU;STO
HD;STA
HD;STA
HIGH
SU;DAT
SU;STA
002aad985
Fig 17. I2C-bus pins clock timing
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NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
11.5 SSP interface
Table 13. Dynamic characteristic: SSP interface
Tamb = −40 °C to +85 °C; VDD(3V3) over specified ranges.[1]
Symbol
Parameter
Conditions
Min
Typ[2]
Max
Unit
SSP interface
tsu(SPI_MISO)
SPI_MISO set-up time
Tamb =25 °C;
measured in
SPI Master
mode; see
Figure 18
-
11
-
ns
[1] Parameters are valid over operating temperature range unless otherwise specified.
[2] Typical ratings are not guaranteed. The values listed are at room temperature (25 °C), nominal supply voltages.
shifting edges
SCK
sampling edges
MOSI
MISO
t
su(SPI_MISO)
002aad326
Fig 18. MISO line set-up time in SSP Master mode
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32-bit ARM Cortex-M3 microcontroller
11.6 USB interface
Table 14. Dynamic characteristics: USB pins (full-speed)
CL = 50 pF; Rpu = 1.5 kΩ on D+ to VDD(3V3), unless otherwise specified.
Symbol
Parameter
rise time
fall time
Conditions
10 % to 90 %
10 % to 90 %
tr / tf
Min
8.5
7.7
-
Typ
Max
13.8
13.7
109
Unit
ns
tr
-
-
-
tf
ns
tFRFM
differential rise and fall time
matching
%
VCRS
output signal crossover voltage
source SE0 interval of EOP
1.3
160
−2
-
-
-
2.0
175
+5
V
tFEOPT
tFDEOP
see Figure 19
ns
ns
source jitter for differential transition see Figure 19
to SE0 transition
tJR1
receiver jitter to next transition
−18.5
−9
-
-
-
+18.5
ns
ns
ns
tJR2
receiver jitter for paired transitions
EOP width at receiver
10 % to 90 %
+9
-
[1]
[1]
tEOPR1
must reject as
EOP; see
Figure 19
40
tEOPR2
EOP width at receiver
must accept as
EOP; see
82
-
-
ns
Figure 19
[1] Characterized but not implemented as production test. Guaranteed by design.
T
PERIOD
crossover point
extended
crossover point
differential
data lines
source EOP width: t
FEOPT
differential data to
SE0/EOP skew
n × T
+ t
PERIOD
FDEOP
receiver EOP width: t
, t
EOPR1 EOPR2
002aab561
Fig 19. Differential data-to-EOP transition skew and EOP width
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11.7 SPI
32-bit ARM Cortex-M3 microcontroller
Table 15. Dynamic characteristics of SPI pins
Tamb = −40 °C to +85 °C.
Symbol
SPI master
TSPICYC
tSPICLKH
tSPICLKL
tSPIDSU
tSPIDH
Parameter
Min
Typ
Max
Unit
SPI cycle time
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
ns
ns
ns
ns
ns
ns
ns
SPICLK HIGH time
SPICLK LOW time
SPI data set-up time
SPI data hold time
tSPIQV
SPI data output valid time
SPI output data hold time
tSPIOH
SPI slave
TSPICYC
tSPICLKH
tSPICLKL
tSPIDSU
tSPIDH
SPI cycle time
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
ns
ns
ns
ns
ns
ns
ns
SPICLK HIGH time
SPICLK LOW time
SPI data set-up time
SPI data hold time
tSPIQV
SPI data output valid time
SPI output data hold time
tSPIOH
T
t
SPICLKH
t
SPICYC
SPICLKL
SCK (CPOL = 0)
SCK (CPOL = 1)
MOSI
t
t
SPIOH
SPIQV
DATA VALID
DATA VALID
t
t
SPIDH
SPIDSU
MISO
DATA VALID
DATA VALID
002aad986
Fig 20. SPI master timing (CPHA = 1)
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Objective data sheet
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NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
T
t
SPICLKH
t
SPICYC
SPICLKL
SCK (CPOL = 0)
SCK (CPOL = 1)
MOSI
t
t
SPIOH
SPIQV
DATA VALID
DATA VALID
t
t
SPIDH
SPIDSU
DATA VALID
DATA VALID
MISO
002aad987
Fig 21. SPI master timing (CPHA = 0)
T
t
SPICLKH
t
SPICYC
SPICLKL
SCK (CPOL = 0)
SCK (CPOL = 1)
t
t
SPIDH
SPIDSU
MOSI
MISO
DATA VALID
DATA VALID
DATA VALID
t
t
SPIOH
SPIQV
DATA VALID
002aad988
Fig 22. SPI slave timing (CPHA = 1)
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Objective data sheet
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NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
T
t
SPICLKH
t
SPICYC
SPICLKL
SCK (CPOL = 0)
SCK (CPOL = 1)
t
t
SPIDH
SPIDSU
MOSI
MISO
DATA VALID
DATA VALID
DATA VALID
t
t
SPIOH
SPIQV
DATA VALID
002aad989
Fig 23. SPI slave timing (CPHA = 0)
LPC1758_56_54_52_51_2
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Objective data sheet
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LPC1758/56/54/52/51
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
11.8 Ethernet (LPC1758 only)
Table 16. Dynamic characteristics: Ethernet MAC pins
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Ethernet MAC signals for MIIM
Tcy(clk)
tv(Q)
clock cycle time
on pin ENET_MDC
<tbd>
<tbd> <tbd> ns
<tbd> <tbd> ns
data output valid time
on pin ENET_MDIO; MDIO <tbd>
write
tQZ
data output high-impedance time
data input set-up time
<tbd>
<tbd> <tbd> ns
<tbd> <tbd> ns
tsu(D)
on pin ENET_MDIO; MDIO <tbd>
read
th(D)
data input hold time
on pin ENET_MDIO; MDIO <tbd>
read
<tbd> <tbd> ns
Ethernet MAC signals for RMII
tsu(D) data input set-up time
on pin ENET_RXD; RMII
receive input
<tbd>
<tbd>
<tbd> <tbd> ns
<tbd> <tbd> ns
<tbd> <tbd> ns
<tbd> <tbd> ns
<tbd> <tbd> ns
<tbd> <tbd> ns
<tbd> <tbd> ns
<tbd> <tbd> ns
<tbd> <tbd> ns
<tbd> <tbd> ns
on pin ENET_CRS; RMII
carrier sense input
on pin ENET_RX_ER; RMII <tbd>
receive error input
th(D)
data input hold time
on pin ENET_RXD; RMII
receive input
<tbd>
on pin ENET_CRS; RMII
carrier sense input
<tbd>
on pin ENET_RX_ER; RMII <tbd>
receive error input
td(QV)
data output valid delay time
data output hold time
on pin ENET_TXD; RMII
transmit output
<tbd>
on pin ENET_TX_EN; RMII <tbd>
transmit enable
th(Q)
on pin ENET_TXD; RMII
transmit output
<tbd>
on pin ENET_TX_EN; RMII <tbd>
transmit enable
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NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
T
cy(clk)
ENET_MDC
t
v(Q)
ENET_MDIO(O)
t
QZ
t
t
su(D)
h(D)
ENET_MDIO(I)
002aad990
Fig 24. Ethernet MAC MIIM timing
ENET_REF_CLK
t
t
h(Q)
d(QV)
ENET_TX_EN
ENET_TXD[1:0]
t
t
h(D)
su(D)
ENET_CRS
ENET_RXD[1:0]
ENET_RX_ER
002aad991
Fig 25. Ethernet RMII timing
LPC1758_56_54_52_51_2
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Objective data sheet
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LPC1758/56/54/52/51
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
11.9 I2S-bus interface (LPC1758/56 only)
Table 17. Dynamic characteristics: I2S-bus interface pins
Tamb = −40 °C to +85 °C.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
common to input and output
Tcy(clk)
tr
clock cycle time
rise time
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
tf
fall time
output
tWH
tWL
pulse width HIGH
pulse width LOW
data output valid time
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
tv(Q)
on pin I2STX_SDA
on pin I2STX_WS
input
tsu(D)
th(D)
data input set-up time
data input hold time
on pin I2SRX_SDA
on pin I2SRX_SDA
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
T
t
t
r
cy(clk)
f
I2STX_CLK
I2STX_SDA
t
t
WL
WH
t
v(Q)
I2STX_WS
002aad992
t
v(Q)
Fig 26. I2S-bus timing (output)
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NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
T
t
t
r
cy(clk)
f
I2SRX_CLK
t
t
WL
WH
I2SRX_SDA
I2SRX_WS
t
t
h(D)
su(D)
002aae159
t
t
su(D)
su(D)
Fig 27. I2S-bus timing (input)
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32-bit ARM Cortex-M3 microcontroller
12. ADC electrical characteristics
Table 18. ADC characteristics
VDDA = 2.7 V to 3.6 V; Tamb = −40 °C to +85 °C unless otherwise specified; ADC frequency <tbd>.
Symbol
VIA
Parameter
Conditions
Min
Typ
Max
Unit
V
analog input voltage
analog input capacitance
differential linearity error
integral non-linearity
offset error
0
-
-
-
-
-
-
-
-
VDDA
Cia
-
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
pF
[1][2][3]
[1][4]
[1][5]
[1][6]
[1][7]
[8]
ED
2
1
-
LSB
LSB
LSB
%
EL(adj)
EO
EG
gain error
-
ET
absolute error
-
LSB
kΩ
Rvsi
voltage source interface
resistance
-
SRin
input slew rate
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
V/ms
ns
Tcy(ADC)
tADC
ADC clock cycle time
ADC conversion time
ns
[1] Conditions: VSSA = 0 V, VDDA = 3.3 V.
[2] The ADC is monotonic, there are no missing codes.
[3] The differential linearity error (ED) is the difference between the actual step width and the ideal step width. See Figure 28.
[4] The integral non-linearity (EL(adj)) is the peak difference between the center of the steps of the actual and the ideal transfer curve after
appropriate adjustment of gain and offset errors. See Figure 28.
[5] The offset error (EO) is the absolute difference between the straight line which fits the actual curve and the straight line which fits the
ideal curve. See Figure 28.
[6] The gain error (EG) is the relative difference in percent between the straight line fitting the actual transfer curve after removing offset
error, and the straight line which fits the ideal transfer curve. See Figure 28.
[7] The absolute error (ET) is the maximum difference between the center of the steps of the actual transfer curve of the non-calibrated ADC
and the ideal transfer curve. See Figure 28.
[8] See Figure 29.
LPC1758_56_54_52_51_2
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Objective data sheet
Rev. 02 — 11 February 2009
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32-bit ARM Cortex-M3 microcontroller
offset
error
gain
error
E
E
O
G
4095
4094
4093
4092
4091
4090
(2)
7
code
out
(1)
6
5
4
3
2
1
0
(5)
(4)
(3)
1 LSB
(ideal)
4090 4091 4092 4093 4094 4095 4096
1
2
3
4
5
6
7
V
IA
(LSB
)
ideal
offset error
E
O
V
− V
DDA SSA
1 LSB =
4096
002aad948
(1) Example of an actual transfer curve.
(2) The ideal transfer curve.
(3) Differential linearity error (ED).
(4) Integral non-linearity (EL(adj)).
(5) Center of a step of the actual transfer curve.
Fig 28. 12-bit ADC characteristics
LPC1758_56_54_52_51_2
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32-bit ARM Cortex-M3 microcontroller
LPC17XX
R
vsi
x kΩ
AD0[y]
AD0[y]
SAMPLE
x pF
x pF
V
EXT
V
SS
002aad949
Fig 29. Suggested ADC interface - LPC1758/56/54/52/51 AD0[y] pin
LPC1758_56_54_52_51_2
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13. DAC electrical characteristics (LPC1758/56/54 only)
Table 19. DAC electrical characteristics
VDDA = 2.7 V to 3.6 V; Tamb = −40 °C to +85 °C unless otherwise specified; DAC frequency <tbd> MHz.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
PSRR
power supply rejection
ratio
∆VDDA = 100mV
<tbd>
<tbd>
<tbd>
dB
VO
output voltage
count = max
count = min
V
DDA − k
V
VSSA + k
±1
V
ED
EL(adj)
EO
EG
ET
differential linearity error
integral non-linearity
offset error
-
-
LSB
LSB
LSB
%
-
-
±2
-
-
±3
gain error
-
-
±0.5
±4
absolute error
load capacitance
output resistance
turn-on time
-
-
LSB
pF
CL
-
-
100
RO
ton
1
-
4
Ω
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
ns
ts
settling time
full scale
ns
small change
ns
SR
slew rate
V/ms
nV.s
kHz
glitch energy, full scale
3 dB bandwidth
B3dB
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Objective data sheet
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14. Application information
14.1 Suggested USB interface solutions
V
DD(3V3)
USB_UP_LED
USB_CONNECT
LPC17xx
SoftConnect switch
R1
1.5 kΩ
V
BUS
R
R
= 33 Ω
= 33 Ω
S
USB-B
connector
USB_D+
S
USB_D−
V
SS
002aad939
Fig 30. LPC1758/56/54/52/51 USB interface on a self-powered device
V
DD(3V3)
R2
LPC17xx
R1
1.5 kΩ
USB_UP_LED
V
BUS
USB-B
connector
R
R
= 33 Ω
= 33 Ω
S
USB_D+
S
USB_D−
V
SS
002aad940
Fig 31. LPC1758/56/54/52/51 USB interface on a bus-powered device
LPC1758_56_54_52_51_2
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V
DD
R1
R2
R3
R4
VBUS
ID
RSTOUT
RESET_N
ADR/PSW
OE_N/INT_N
SPEED
33 Ω
DP
V
DD
Mini-AB
33 Ω
connector
DM
ISP1302
SUSPEND
R4
R5
R6
LPC1758/56/54
V
SS
SCL
SDA
SCL1/2
SDA1/2
INT_N
EINT0
USB_D+
USB_D−
002aae155
Fig 32. LPC1758/56/54 USB OTG port configuration
V
DD
USB_UP_LED
V
SS
33 Ω
33 Ω
D+
USB_D+
USB_D−
D−
USB-A
connector
15 kΩ
15 kΩ
LPC1758/56/54
V
DD
V
BUS
USB_PWRD
USB_PPWR
FLAGA
OUTA
ENA
5 V
LM3526-L
IN
002aae156
Fig 33. LPC1758/56/54 USB host port configuration
LPC1758_56_54_52_51_2
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V
DD
USB_UP_LED
V
DD
USB_CONNECT
LPC17xx
V
SS
33 Ω
33 Ω
USB_D+
D+
USB-B
connector
D−
USB_D−
V
V
BUS
BUS
002aad943
Fig 34. LPC1758/56/54/52/51 USB device port configuration
LPC1758_56_54_52_51_2
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15. Package outline
LQFP80: plastic low profile quad flat package; 80 leads; body 12 x 12 x 1.4 mm
SOT315-1
y
X
A
60
41
Z
61
40
E
e
H
A
E
2
E
A
(A )
3
A
1
w M
p
θ
b
L
p
L
pin 1 index
80
21
detail X
1
20
Z
D
v
M
A
e
w M
b
p
D
B
H
v
M
B
D
0
5
10 mm
scale
DIMENSIONS (mm are the original dimensions)
A
(1)
(1)
(1)
(1)
UNIT
A
A
A
b
c
D
E
e
H
H
L
L
v
w
y
Z
Z
θ
1
2
3
p
D
E
p
D
E
max.
7o
0o
0.16 1.5
0.04 1.3
0.27 0.18 12.1 12.1
0.13 0.12 11.9 11.9
14.15 14.15
13.85 13.85
0.75
0.30
1.45 1.45
1.05 1.05
mm
1.6
0.25
0.5
1
0.2 0.15 0.1
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
JEITA
00-01-19
03-02-25
SOT315-1
136E15
MS-026
Fig 35. Package outline (LQFP80)
LPC1758_56_54_52_51_2
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16. Abbreviations
Table 20. Abbreviations
Acronym
ADC
AHB
AMBA
APB
BOD
CAN
DAC
DCC
DMA
DSP
EOP
ETM
GPIO
IRC
Description
Analog-to-Digital Converter
Advanced High-performance Bus
Advanced Microcontroller Bus Architecture
Advanced Peripheral Bus
BrownOut Detection
Controller Area Network
Digital-to-Analog Converter
Debug Communication Channel
Direct Memory Access
Digital Signal Processing
End Of Packet
Embedded Trace Macrocell
General Purpose Input/Output
Internal RC
IrDA
Infrared Data Association
Joint Test Action Group
JTAG
MAC
MIIM
OTG
PHY
PLL
Media Access Control
Media Independent Interface Management
On-The-Go
Physical Layer
Phase-Locked Loop
PWM
RMII
SE0
Pulse Width Modulator
Reduced Media Independent Interface
Single Ended Zero
SPI
Serial Peripheral Interface
Serial Synchronous Interface
Synchronous Serial Port
Transistor-Transistor Logic
Universal Asynchronous Receiver/Transmitter
Universal Serial Bus
SSI
SSP
TTL
UART
USB
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17. Revision history
Table 21. Revision history
Document ID
Release date
Data sheet status
Change
notice
Supersedes
LPC1758_56_54_52_51_2
Modifications:
20090211
Objective data sheet
-
LPC1758_56_54_52_51_1
• Updated Figure 3 “LPC1758/56/54/52/51 memory map” on page 15
• Updated Table 9 “Flash characteristics” on page 47
LPC1758_56_54_52_51_1
20090115
Objective data sheet
-
-
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18. Legal information
18.1 Data sheet status
Document status[1][2]
Product status[3]
Development
Definition
Objective [short] data sheet
This document contains data from the objective specification for product development.
This document contains data from the preliminary specification.
This document contains the product specification.
Preliminary [short] data sheet Qualification
Product [short] data sheet Production
[1]
[2]
[3]
Please consult the most recently issued document before initiating or completing a design.
The term ‘short data sheet’ is explained in section “Definitions”.
The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nxp.com.
to result in personal injury, death or severe property or environmental
18.2 Definitions
damage. NXP Semiconductors accepts no liability for inclusion and/or use of
NXP Semiconductors products in such equipment or applications and
therefore such inclusion and/or use is at the customer’s own risk.
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) may cause permanent
damage to the device. Limiting values are stress ratings only and operation of
the device at these or any other conditions above those given in the
Characteristics sections of this document is not implied. Exposure to limiting
values for extended periods may affect device reliability.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local NXP Semiconductors sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Terms and conditions of sale — NXP Semiconductors products are sold
subject to the general terms and conditions of commercial sale, as published
at http://www.nxp.com/profile/terms, including those pertaining to warranty,
intellectual property rights infringement and limitation of liability, unless
explicitly otherwise agreed to in writing by NXP Semiconductors. In case of
any inconsistency or conflict between information in this document and such
terms and conditions, the latter will prevail.
18.3 Disclaimers
General — Information in this document is believed to be accurate and
reliable. However, NXP Semiconductors does not give any representations or
warranties, expressed or implied, as to the accuracy or completeness of such
information and shall have no liability for the consequences of use of such
information.
No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or the
grant, conveyance or implication of any license under any copyrights, patents
or other industrial or intellectual property rights.
Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
18.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
Suitability for use — NXP Semiconductors products are not designed,
authorized or warranted to be suitable for use in medical, military, aircraft,
space or life support equipment, nor in applications where failure or
malfunction of an NXP Semiconductors product can reasonably be expected
I2C-bus — logo is a trademark of NXP B.V.
19. Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
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20. Contents
1
General description . . . . . . . . . . . . . . . . . . . . . . 1
7.20
I2S-bus serial I/O controllers
(LPC1758/56 only) . . . . . . . . . . . . . . . . . . . . . 23
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
General purpose 32-bit timers/external
2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Ordering information. . . . . . . . . . . . . . . . . . . . . 4
Ordering options. . . . . . . . . . . . . . . . . . . . . . . . 4
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7.20.1
7.21
3
4
4.1
5
event counters . . . . . . . . . . . . . . . . . . . . . . . . 24
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Pulse width modulator . . . . . . . . . . . . . . . . . . 25
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Motor control PWM . . . . . . . . . . . . . . . . . . . . 26
Quadrature Encoder Interface (QEI) . . . . . . . 26
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Repetitive Interrupt (RI) timer. . . . . . . . . . . . . 27
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
System tick timer . . . . . . . . . . . . . . . . . . . . . . 27
Watchdog timer . . . . . . . . . . . . . . . . . . . . . . . 27
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
RTC and backup registers . . . . . . . . . . . . . . . 28
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Clocking and power control . . . . . . . . . . . . . . 28
Crystal oscillators. . . . . . . . . . . . . . . . . . . . . . 28
7.21.1
7.22
7.22.1
7.23
7.24
7.24.1
7.25
7.25.1
7.26
7.27
7.27.1
7.28
7.28.1
7.29
6
6.1
6.2
Pinning information. . . . . . . . . . . . . . . . . . . . . . 6
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 6
7
7.1
7.2
7.3
7.4
7.5
7.6
7.7
Functional description . . . . . . . . . . . . . . . . . . 12
Architectural overview. . . . . . . . . . . . . . . . . . . 12
ARM Cortex-M3 processor . . . . . . . . . . . . . . . 13
On-chip flash program memory . . . . . . . . . . . 13
On-chip SRAM . . . . . . . . . . . . . . . . . . . . . . . . 13
Memory Protection Unit (MPU). . . . . . . . . . . . 13
Memory map. . . . . . . . . . . . . . . . . . . . . . . . . . 13
Nested Vectored Interrupt Controller (NVIC) . 16
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Interrupt sources. . . . . . . . . . . . . . . . . . . . . . . 16
Pin connect block . . . . . . . . . . . . . . . . . . . . . . 16
General purpose DMA controller . . . . . . . . . . 16
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Fast general purpose parallel I/O . . . . . . . . . . 17
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Ethernet (LPC1758 only) . . . . . . . . . . . . . . . . 18
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
USB interface . . . . . . . . . . . . . . . . . . . . . . . . . 19
USB device controller . . . . . . . . . . . . . . . . . . . 19
7.7.1
7.7.2
7.8
7.29.1
7.29.1.1 Internal RC oscillator . . . . . . . . . . . . . . . . . . . 29
7.29.1.2 Main oscillator . . . . . . . . . . . . . . . . . . . . . . . . 29
7.29.1.3 RTC oscillator. . . . . . . . . . . . . . . . . . . . . . . . . 29
7.9
7.9.1
7.10
7.10.1
7.11
7.11.1
7.12
7.12.1
7.29.2
7.29.3
7.29.4
7.29.5
7.29.6
Main PLL (PLL0) . . . . . . . . . . . . . . . . . . . . . . 30
USB PLL (PLL1). . . . . . . . . . . . . . . . . . . . . . . 30
RTC clock output . . . . . . . . . . . . . . . . . . . . . . 30
Wake-up timer . . . . . . . . . . . . . . . . . . . . . . . . 30
Power control . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.29.6.1 Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.29.6.2 Deep-sleep mode. . . . . . . . . . . . . . . . . . . . . . 31
7.29.6.3 Power-down mode . . . . . . . . . . . . . . . . . . . . . 32
7.29.6.4 Deep power-down mode . . . . . . . . . . . . . . . . 32
7.29.6.5 Wakeup interrupt controller . . . . . . . . . . . . . . 32
7.12.1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.12.2 USB host controller (LPC1758/56/54 only). . . 20
7.12.2.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.12.3 USB OTG controller (LPC1758/56/54 only).. . 20
7.12.3.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.13
7.13.1
7.14
7.14.1
7.15
7.15.1
7.16
7.16.1
7.17
7.17.1
7.18
7.29.7
7.29.8
7.30
Peripheral power control . . . . . . . . . . . . . . . . 32
Power domains. . . . . . . . . . . . . . . . . . . . . . . . 33
System control . . . . . . . . . . . . . . . . . . . . . . . . 34
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Brownout detection . . . . . . . . . . . . . . . . . . . . 35
Code security (Code Read Protection - CRP) 35
APB interface . . . . . . . . . . . . . . . . . . . . . . . . . 35
AHB multilayer matrix. . . . . . . . . . . . . . . . . . . 36
External interrupt inputs. . . . . . . . . . . . . . . . . 36
Memory mapping control . . . . . . . . . . . . . . . . 36
Emulation and debugging. . . . . . . . . . . . . . . . 36
CAN controller and acceptance filters . . . . . . 20
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
12-bit ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
10-bit DAC (LPC1758/56/54 only) . . . . . . . . . 21
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
UARTs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
SPI serial I/O controller. . . . . . . . . . . . . . . . . . 22
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
SSP serial I/O controller . . . . . . . . . . . . . . . . . 22
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
I2C-bus serial I/O controllers. . . . . . . . . . . . . . 23
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.30.1
7.30.2
7.30.3
7.30.4
7.30.5
7.30.6
7.30.7
7.31
8
Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 36
Thermal characteristics . . . . . . . . . . . . . . . . . 38
Thermal characteristics . . . . . . . . . . . . . . . . . 38
7.18.1
7.19
7.19.1
9
9.1
continued >>
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Objective data sheet
Rev. 02 — 11 February 2009
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NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
10
Static characteristics. . . . . . . . . . . . . . . . . . . . 39
10.1
10.2
Power consumption . . . . . . . . . . . . . . . . . . . . 42
Electrical pin characteristics . . . . . . . . . . . . . . 45
11
Dynamic characteristics . . . . . . . . . . . . . . . . . 47
Flash memory. . . . . . . . . . . . . . . . . . . . . . . . . 47
External clock . . . . . . . . . . . . . . . . . . . . . . . . . 47
Internal oscillators. . . . . . . . . . . . . . . . . . . . . . 48
I2C-bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
SSP interface . . . . . . . . . . . . . . . . . . . . . . . . . 50
USB interface . . . . . . . . . . . . . . . . . . . . . . . . . 51
SPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Ethernet (LPC1758 only) . . . . . . . . . . . . . . . . 55
I2S-bus interface (LPC1758/56 only) . . . . . . . 57
11.1
11.2
11.3
11.4
11.5
11.6
11.7
11.8
11.9
12
13
ADC electrical characteristics . . . . . . . . . . . . 59
DAC electrical characteristics
(LPC1758/56/54 only). . . . . . . . . . . . . . . . . . . . 62
14
14.1
15
Application information. . . . . . . . . . . . . . . . . . 63
Suggested USB interface solutions . . . . . . . . 63
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 66
Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 67
Revision history. . . . . . . . . . . . . . . . . . . . . . . . 68
16
17
18
Legal information. . . . . . . . . . . . . . . . . . . . . . . 69
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 69
Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 69
18.1
18.2
18.3
18.4
19
20
Contact information. . . . . . . . . . . . . . . . . . . . . 69
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP B.V. 2009.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
Date of release: 11 February 2009
Document identifier: LPC1758_56_54_52_51_2
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