935287913551_技术文档

LPC1759/58/56/54/52/51

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. 8.4 — 4 April 2014

Product data sheet

1. General description

The LPC1759/58/56/54/52/51 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 LPC1758/56/57/54/52/51 operate at CPU frequencies of up to 100 MHz. The

LPC1759 operates at CPU frequencies of up to 120 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 LPC1759/58/56/54/52/51 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, 2 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 and benefits

 ARM Cortex-M3 processor, running at frequencies of up to 100 MHz

(LPC1758/56/57/54/52/51) or of up to 120 MHz (LPC1759). A Memory Protection Unit

(MPU) supporting eight regions is included.

 ARM Cortex-M3 built-in Nested Vectored Interrupt Controller (NVIC).

 Up to 512 kB on-chip flash programming memory. Enhanced flash memory accelerator

enables high-speed 120 MHz operation with zero wait states.

 In-System Programming (ISP) and In-Application Programming (IAP) via on-chip

bootloader software.

 On-chip SRAM includes:

 Up to 32 kB of SRAM on the CPU with local code/data bus for high-performance

CPU access.

 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.

 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.

LPC1759/58/56/54/52/51

NXP Semiconductors

32-bit ARM Cortex-M3 microcontroller

 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.

 Split APB bus allows high throughput with few stalls between the CPU and DMA.

 Serial interfaces:

 On the LPC1758 only, Ethernet MAC with RMII interface and dedicated DMA

controller.

 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.

 Four UARTs with fractional baud rate generation, internal FIFO, and DMA support.

One UART has modem control I/O and RS-485/EIA-485 support, and one UART

has IrDA support.

 CAN 2.0B controller with two (LPC1759/58/56) or one (LPC1754/52/51) channels.

 SPI controller with synchronous, serial, full duplex communication and

programmable data length.

 Two SSP controllers with FIFO and multi-protocol capabilities. The SSP interfaces

can be used with the GPDMA controller.

 Two I²C-bus interfaces supporting fast mode with a data rate of 400 kbit/s with

multiple address recognition and monitor mode.

 On the LPC1759/58/56 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.

 Other peripherals:

 52 General Purpose I/O (GPIO) pins with configurable pull-up/down resistors. All

GPIOs support a new, configurable open-drain operating mode. The GPIO block is

accessed through the AHB multilayer bus for fast access and located in memory

such that it supports Cortex-M3 bit banding and use by the General Purpose DMA

Controller.

 12-bit Analog-to-Digital Converter (ADC) with input multiplexing among six pins,

conversion rates up to 200 kHz, and multiple result registers. The 12-bit ADC can

be used with the GPDMA controller.

 On the LPC1759/58/56/54 only, 10-bit Digital-to-Analog Converter (DAC) with

dedicated conversion timer and DMA support.

 Four general purpose timers/counters, with a total of three capture inputs and ten

compare outputs. Each timer block has an external count input. Specific timer

events can be selected to generate DMA requests.

 One motor control PWM with support for three-phase motor control.

 Quadrature encoder interface that can monitor one external quadrature encoder.

 One standard PWM/timer block with external count input.

 Real-Time Clock (RTC) with a separate power domain and dedicated RTC

oscillator. The RTC block includes 20 bytes of battery-powered backup registers.

 WatchDog Timer (WDT). The WDT can be clocked from the internal RC oscillator,

the RTC oscillator, or the APB clock.

 ARM Cortex-M3 system tick timer, including an external clock input option.

LPC1759_58_56_54_52_51

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Product data sheet

Rev. 8.4 — 4 April 2014

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LPC1759/58/56/54/52/51

NXP Semiconductors

32-bit ARM Cortex-M3 microcontroller

 Repetitive Interrupt Timer (RIT) provides programmable and repeating timed

interrupts.

 Each peripheral has its own clock divider for further power savings.

 Standard JTAG test/debug interface for compatibility with existing tools. Serial Wire

Debug and Serial Wire Trace Port options.

 Emulation trace module enables non-intrusive, high-speed real-time tracing of

instruction execution.

 Integrated PMU (Power Management Unit) automatically adjusts internal regulators to

minimize power consumption during Sleep, Deep sleep, Power-down, and Deep

power-down modes.

 Four reduced power modes: Sleep, Deep-sleep, Power-down, and Deep power-down.

 Single 3.3 V power supply (2.4 V to 3.6 V).

 One external interrupt input configurable as edge/level sensitive. All pins on Port 0 and

Port 2 can be used as edge sensitive interrupt sources.

 Non-maskable Interrupt (NMI) input.

 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.

 Processor wake-up from Power-down mode via any interrupt able to operate during

Power-down mode (includes external interrupts, RTC interrupt, USB activity, Ethernet

wake-up interrupt (LPC1758 only), CAN bus activity, Port 0/2 pin interrupt, and NMI).

 Brownout detect with separate threshold for interrupt and forced reset.

 Power-On Reset (POR).

 Crystal oscillator with an operating range of 1 MHz to 25 MHz.

 4 MHz internal RC oscillator trimmed to 1 % accuracy that can optionally be used as a

system clock.

 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.

 USB PLL for added flexibility.

 Code Read Protection (CRP) with different security levels.

 Unique device serial number for identification purposes.

 Available as 80-pin LQFP package (12 mm  12 mm  1.4 mm).

3. Applications

 eMetering

 Lighting

 Industrial networking

 Alarm systems

 White goods

 Motor control

LPC1759_58_56_54_52_51

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Product data sheet

Rev. 8.4 — 4 April 2014

3 of 79

LPC1759/58/56/54/52/51

NXP Semiconductors

32-bit ARM Cortex-M3 microcontroller

4. Ordering information

Table 1.

Ordering information

Type number

Package

Name

Description

Version

LPC1759FBD80

LPC1758FBD80

LPC1756FBD80

LPC1754FBD80

LPC1752FBD80

LPC1751FBD80

LQFP80

plastic low-profile quad package; 80 leads; body 12  12  1.4 mm

SOT315-1

4.1 Ordering options

Table 2.

Ordering options

Type number

Flash SRAM in kB

Ethernet USB

CAN I²S-bus DAC Maximum

CPU

operating

frequency

CPU AHB

AHB

Total

SRAM0 SRAM1

LPC1759FBD80 512 kB 32

LPC1758FBD80 512 kB 32

LPC1756FBD80 256 kB 16

LPC1754FBD80 128 kB 16

LPC1752FBD80 64 kB 16

16

-

16

-

64

32

16

8

no

yes

no

Device/Host/OTG 2

yes

no

yes 120 MHz

yes 100 MHz

Device/Host/OTG 2

Device/Host/OTG 1

-

Device only

1

no

100 MHz

LPC1751FBD80 32 kB

8

-

no

LPC1759_58_56_54_52_51

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Product data sheet

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32-bit ARM Cortex-M3 microcontroller

5. Marking

The LPC175x devices typically have the following top-side marking:

LPC175xxxx

xxxxxxx

xxYYWWR[x]

The last/second to last letter in the third line (field ‘R’) will identify the device revision. This

data sheet covers the following revisions of the LPC175x:

Table 3.

Device revision table

Revision identifier (R)

Revision description

Initial device revision

Second device revision

‘-’

‘A’

Field ‘YY’ states the year the device was manufactured. Field ‘WW’ states the week the

device was manufactured during that year.

LPC1759_58_56_54_52_51

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Product data sheet

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NXP Semiconductors

32-bit ARM Cortex-M3 microcontroller

6. Block diagram

XTAL1

debug

port

JTAG

interface

RMII pins

USB pins

USB PHY

XTAL2

RESET

LPC1759/58/56/54/52/51

TEST/DEBUG

INTERFACE

CLOCK

GENERATION,

POWER CONTROL,

SYSTEM

USB HOST/

DEVICE/OTG

CONTROLLER

ETHERNET

ARM

CORTEX-M3

DMA

CONTROLLER

FUNCTIONS

(2)

WITH DMA

(4)

WITH DMA

clocks and

controls

I-code

bus

D-code

bus

system

bus

master

slave

ROM

slave

MULTILAYER AHB MATRIX

SRAM

64/32/

16/8 kB

slave

FLASH

ACCELERATOR

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

SCK0

APB slave group 1

SSP0

APB slave group 0

SSP1

SCK1

SSEL0

MISO0

MOSI0

SSEL1

MISO1

MOSI1

RXD2/3

TXD2/3

UART2/3

RXD0/TXD0

8 × UART1

UART0/1

I2SRX_SDA

I2STX_CLK

I2STX_WS

I2STX_SDA

TX_MCLK

RD1/2

TD1/2

(1)

CAN1/CAN2

(1)

I2S

SCL1

SDA1

I2C1

SPI0

RX_MCLK

SCK/SSEL

MOSI/MISO

2 × MAT0/1

SCL2

SDA2

I2C2

TIMER 0/1

WDT

1 × CAP0,

2 × CAP1

4 × MAT2

2 × MAT3

TIMER2/3

MCOA[2:0]

MCOB[2:0]

MCI[2:0]

PWM1[6:1]

PCAP1[1:0]

MOTOR CONTROL PWM

QUADRATURE ENCODER

PWM1

12-bit ADC

AD0[7:2]

PHA, PHB

INDEX

PIN CONNECT

(3)

DAC

AOUT

EINT0

P0, P2

GPIO INTERRUPT CONTROL

32 kHz

EXTERNAL INTERRUPTS

RTCX1

RTCX2

RTC

OSCILLATOR

RI TIMER

VBAT

SYSTEM CONTROL

BACKUP REGISTERS

RTC POWER DOMAIN

(1)

(3)

(4)

LPC1759/58/56 only

LPC1758 only

LPC1759/58/56/54 only

LPC1752/51 USB device only

(2)

002aae153

Grey-shaded blocks represent peripherals with connection to the GPDMA.

Fig 1. Block diagram

LPC1759_58_56_54_52_51

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Product data sheet

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32-bit ARM Cortex-M3 microcontroller

7. Pinning information

7.1 Pinning

61

80

40

21

002aae158

Fig 2. Pin configuration LQFP80 package

7.2 Pin description

Table 4.

Pin description

Symbol

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

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

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

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.

(LPC1759/58/56 only).

I/O

O

SSEL1 — Slave Select for SSP1.

MAT2[0] — Match output for Timer 2, channel 0.

LPC1759_58_56_54_52_51

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Product data sheet

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NXP Semiconductors

32-bit ARM Cortex-M3 microcontroller

Table 4.

Symbol

P0[7]/I2STX_CLK/ 63^[1]

SCK1/MAT2[1]

Pin description …continued

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.

(LPC1759/58/56 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

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. (LPC1759/58/56

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

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.

(LPC1759/58/56 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

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

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

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

LPC1759_58_56_54_52_51

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Product data sheet

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NXP Semiconductors

32-bit ARM Cortex-M3 microcontroller

Table 4.

Symbol

P0[22]/RTS1/TD1 44^[1]

Pin description …continued

Type

I/O

O

Description

P0[22] — General purpose digital input/output pin.

RTS1 — Request to Send output for UART1. Can also be configured to be an

RS-485/EIA-485 output enable signal.

O

TD1 — CAN1 transmitter output.

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.

(LPC1759/58/56 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. (LPC1759/58/56/54 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

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]

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.

P1[1]/

ENET_TXD1

I/O

O

ENET_TXD1 — Ethernet transmit data 1. (LPC1758 only).

P1[4] — General purpose digital input/output pin.

P1[4]/

ENET_TX_EN

I/O

O

ENET_TX_EN — Ethernet transmit data enable. (LPC1758 only).

P1[8] — General purpose digital input/output pin.

P1[8]/

ENET_CRS

I/O

I

ENET_CRS — Ethernet carrier sense. (LPC1758 only).

P1[9] — General purpose digital input/output pin.

P1[9]/

ENET_RXD0

I/O

I

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[10]/

ENET_RXD1

I/O

I

P1[14]/

ENET_RX_ER

I/O

I

P1[15]/

ENET_REF_CLK

I/O

I

LPC1759_58_56_54_52_51

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Product data sheet

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32-bit ARM Cortex-M3 microcontroller

Table 4.

Symbol

Pin description …continued

Type

I/O

O

Description

P1[18]/

25^[1]

P1[18] — General purpose digital input/output pin.

USB_UP_LED/

PWM1[1]/

CAP1[0]

USB_UP_LED — USB GoodLink LED indicator. It is LOW when the device is

configured (non-control endpoints enabled), or when the host is enabled and has

detected a device on the bus. It is HIGH when the device is not configured, or

when host is enabled and has not detected a device on the bus, or during global

suspend. It transitions between LOW and HIGH (flashes) when the host is enabled

and detects activity on the bus.

O

I

PWM1[1] — Pulse Width Modulator 1, channel 1 output.

CAP1[0] — Capture input for Timer 1, channel 0.

P1[19]/MCOA0/

USB_PPWR

CAP1[1]

26^[1]

I/O

O

I

P1[19] — General purpose digital input/output pin.

MCOA0 — Motor control PWM channel 0, output A.

USB_PPWR — Port Power enable signal for USB port. (LPC1759/58/56/54 only).

CAP1[1] — Capture input for Timer 1, channel 1.

P1[20]/MCI0/

PWM1[2]/SCK0

27^[1]

I/O

I

P1[20] — General purpose digital input/output pin.

MCI0 — Motor control PWM channel 0, input. Also Quadrature Encoder Interface

PHA input.

O

PWM1[2] — Pulse Width Modulator 1, channel 2 output.

SCK0 — Serial clock for SSP0.

I/O

O

P1[22]/MCOB0/

USB_PWRD/

MAT1[0]

28^[1]

29^[1]

30^[1]

P1[22] — General purpose digital input/output pin.

MCOB0 — Motor control PWM channel 0, output B.

I

USB_PWRD — Power Status for USB port (host power switch).

(LPC1759/58/56/54 only).

O

I/O

I

MAT1[0] — Match output for Timer 1, channel 0.

P1[23] — General purpose digital input/output pin.

P1[23]/MCI1/

PWM1[4]/MISO0

MCI1 — Motor control PWM channel 1, 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

P1[24]/MCI2/

PWM1[5]/MOSI0

P1[24] — General purpose digital input/output pin.

MCI2 — Motor control PWM channel 2, input. Also Quadrature Encoder Interface

INDEX input.

O

PWM1[5] — Pulse Width Modulator 1, channel 5 output.

MOSI0 — Master Out Slave in for SSP0.

I/O

O

P1[25]/MCOA1/

MAT1[1]

31^[1]

32^[1]

P1[25] — General purpose digital input/output pin.

MCOA1 — Motor control PWM channel 1, output A.

MAT1[1] — Match output for Timer 1, channel 1.

P1[26] — General purpose digital input/output pin.

MCOB1 — 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.

O

P1[26]/MCOB1/

I/O

O

PWM1[6]/CAP0[0]

O

I

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Table 4.

Symbol

Pin description …continued

35^[1]

Type

I/O

O

Description

P1[28]/MCOA2/

PCAP1[0]/

MAT0[0]

P1[28] — General purpose digital input/output pin.

MCOA2 — 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.

MCOB2 — Motor control PWM channel 2, output B.

PCAP1[1] — Capture input for PWM1, channel 1.

MAT0[1] — Match output for Timer 0, channel 1.

P1[30] — General purpose digital input/output pin.

V_BUS— 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

O

P1[29]/MCOB2/

PCAP1[1]/

MAT0[1]

36^[1]

18^[2]

17^[2]

I/O

O

I

O

P1[30]/V_BUS

AD0[4]

/

I/O

I

P1[31]/SCK1/

AD0[5]

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

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]

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.

O

I/O

O

TRACEDATA[1] — Trace data, bit 1.

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. Can also be configured to be an

RS-485/EIA-485 output enable signal.

O

TRACEDATA[0] — Trace data, bit 0.

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Table 4.

Symbol

Pin description …continued

Type

Description

P2[6]/PCAP1[0]/

RI1/TRACECLK

52^[1]

I/O

I

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

51^[1]

P2[7] — General purpose digital input/output pin.

RD2 — CAN2 receiver input. (LPC1759/58/56 only).

O

RTS1 — Request to Send output for UART1. Can also be configured to be an

RS-485/EIA-485 output enable signal.

P2[8]/TD2/

TXD2

50^[1]

49^[1]

I/O

O

P2[8] — General purpose digital input/output pin.

TD2 — CAN2 transmitter output. (LPC1759/58/56 only).

TXD2 — Transmitter output for UART2.

O

P2[9]/

USB_CONNECT/

RXD2

I/O

O

P2[9] — General purpose digital input/output pin.

USB_CONNECT — Signal used to switch an external 1.5 k resistor under

software control. Used with the SoftConnect USB feature.

I

RXD2 — Receiver input for UART2.

P2[10]/EINT0/NMI 41^[5]

I/O

P2[10] — General purpose digital input/output pin. A LOW level on this pin during

reset starts the ISP command handler.

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

O

I/O

O

I

P4[28] — General purpose digital input/output pin.

RX_MCLK — I²S receive master clock. (LPC1759/58/56 only).

MAT2[0] — Match output for Timer 2, channel 0.

TXD3 — Transmitter output for UART3.

P4[29]/TX_MCLK/ 68^[1]

MAT2[1]/RXD3

P4[29] — General purpose digital input/output pin.

TX_MCLK — I²S transmit master clock. (LPC1759/58/56 only).

MAT2[1] — Match output for Timer 2, channel 1.

RXD3 — Receiver input for UART3.

TDO/SWO

1^[6]

O

I

TDO — Test Data out for JTAG interface.

SWO — Serial wire trace output.

TDI

2^[7]

3^[7]

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^[7]

5^[6]

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

LPC1759/58/56/54/52/51 being in Reset state.

14^[8]

I

External reset input: A LOW-going pulse as short as 50 ns 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.

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Table 4.

Symbol

XTAL1

XTAL2

RTCX1

RTCX2

V_SS

Pin description …continued

Type

Description

19^[9][10]

20^[9][10]

13^[9][11]

15^[9]

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

I

Output from the RTC oscillator circuit.

ground: 0 V reference.

24, 33,

43, 57,

66, 78

V_SSA

9

I

analog ground: 0 V reference. This should nominally be the same voltage as V_SS,

but should be isolated to minimize noise and error.

V_DD(3V3)

V_DD(REG)(3V3)

V_DDA

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. This pin should be tied to 3.3 V if the ADC and DAC are

not used.

VREFP

10

I

ADC positive reference voltage: This should be nominally the same voltage as

V_DDAbut should be isolated to minimize noise and error. Level on this pin is used

as a reference for ADC and DAC. This pin should be tied to 3.3 V if the ADC and

DAC are not used.

VREFN

VBAT

12

I

ADC negative reference voltage: This should be nominally the same voltage as

V_SSbut should be isolated to minimize noise and error. Level on this pin is used as

a reference for ADC and DAC.

16^[11]

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. This pin is pulled up to a voltage level of 2.3 V to 2.6 V.

[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 and the pin is not 5 V tolerant. This pin is pulled up to a voltage level of 2.3 V to 2.6 V.

[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. This pin is pulled up to a voltage level of 2.3 V to 2.6 V.

[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). This pad is not 5 V tolerant.

[5] 5 V tolerant pad with 10 ns glitch filter providing digital I/O functions with TTL levels and hysteresis. This pin is pulled up to a voltage

level of 2.3 V to 2.6 V.

[6] 5 V tolerant pad with TTL levels and hysteresis. Internal pull-up and pull-down resistors disabled.

[7] 5 V tolerant pad with TTL levels and hysteresis and internal pull-up resistor.

[8] 5 V tolerant pad with 20 ns glitch filter providing digital I/O function with TTL levels and hysteresis.

[9] Pad provides special analog functionality. 32 kHz crystal oscillator must be used with the RTC.

[10] When the system oscillator is not used, connect XTAL1 and XTAL2 as follows: XTAL1 can be left floating or can be grounded (grounding

is preferred to reduce susceptibility to noise). XTAL2 should be left floating.

[11] When the RTC is not used, connect VBAT to V_DD(REG)(3V3)and leave RTCX1 floating.

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8. Functional description

8.1 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 LPC1759/58/56/54/52/51 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.

8.2 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 division,

hardware single-cycle multiply, 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.

8.3 On-chip flash program memory

The LPC1759/58/56/54/52/51 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.

8.4 On-chip SRAM

The LPC1759/58/56/54/52/51 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.

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8.5 Memory Protection Unit (MPU)

The LPC1759/58/56/54/52/51 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.

8.6 Memory map

The LPC1759/58/56/54/52/51 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.

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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8.7 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.

8.7.1 Features

• Controls system exceptions and peripheral interrupts

• In the LPC1759/58/56/54/52/51, 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

8.7.2 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 Port 0 and Port 2 (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.

8.8 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.

8.9 General purpose DMA controller

The GPDMA is an AMBA AHB compliant peripheral allowing selected

LPC1759/58/56/54/52/51 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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8.9.1 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.

8.10 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.

LPC1759/58/56/54/52/51 use accelerated GPIO functions:

• GPIO registers 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.

• Support for Cortex-M3 bit banding.

• Support for use with the GPDMA controller.

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Additionally, any pin on Port 0 and Port 2 (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.

8.10.1 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.

8.11 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.

8.11.1 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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– 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.

8.12 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 LPC1759/58/56/54 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 15.1. The LPC1752/51 include a USB device controller only.

8.12.1 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.

8.12.1.1 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 LPC1759/58/56/54/52/51 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.

8.12.2 USB host controller (LPC1759/58/56/54 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.

8.12.2.1 Features

• OHCI compliant.

• One downstream port.

• Supports port power switching.

8.12.3 USB OTG controller (LPC1759/58/56/54 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.

8.12.3.1 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.

8.13 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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8.13.1 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.

8.14 12-bit ADC

The LPC1759/58/56/54/52/51 contain one ADC. It is a single 12-bit successive

approximation ADC with six channels and DMA support.

8.14.1 Features

• 12-bit successive approximation ADC.

• Input multiplexing among 6 pins.

• Power-down mode.

• Measurement range VREFN to VREFP.

• 12-bit conversion rate: 200 kHz.

• 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.

8.15 10-bit DAC (LPC1759/58/56/54 only)

The DAC allows to generate a variable analog output. The maximum output value of the

DAC is VREFP.

8.15.1 Features

• 10-bit DAC

• Resistor string architecture

• Buffered output

• Power-down mode

• Selectable output drive

• Dedicated conversion timer

• DMA support

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8.16 UARTs

32-bit ARM Cortex-M3 microcontroller

The LPC1759/58/56/54/52/51 each contain four UARTs. In addition to standard transmit

and receive data lines, UART1 also provides a full modem control handshake interface

and support for RS-485/9-bit mode allowing 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.

8.16.1 Features

• Maximum UART data bit rate of 6.25 Mbit/s.

• 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/EIA-485 mode (UART1).

• UART3 includes an IrDA mode to support infrared communication.

• All UARTs have DMA support.

8.17 SPI serial I/O controller

The LPC1759/58/56/54/52/51 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.

8.17.1 Features

• Maximum SPI data bit rate of 12.5 Mbit/s

• 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

8.18 SSP serial I/O controller

The LPC1759/58/56/54/52/51 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

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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.

8.18.1 Features

• Maximum SSP speed of 50 Mbit/s (master) or 8 Mbit/s (slave)

• 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

8.19 I²C-bus serial I/O controllers

The LPC1759/58/56/54/52/51 each contain two 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.

8.19.1 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.

• Both I²C-bus controllers support multiple address recognition and a bus monitor

mode.

8.20 I²S-bus serial I/O controllers (LPC1759/58/56 only)

The I²S-bus provides a standard communication interface for digital audio applications.

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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.

8.20.1 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.

8.21 General purpose 32-bit timers/external event counters

The LPC1759/58/56/54/52/51 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.

8.21.1 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.

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• Up to two match registers can be used to generate timed DMA requests.

8.22 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 LPC1759/58/56/54/52/51. 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).

8.22.1 Features

• LPC1759/58/56/54/52/51 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.

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• Double edge controlled PWM outputs can be programmed to be either positive going

or negative going pulses.

• 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.

8.23 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. At the same time, the motor control PWM is

highly configurable for other generalized timing, counting, capture, and compare

applications.

8.24 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.

8.24.1 Features

• Tracks encoder position.

• Increments/decrements depending on direction.

• Programmable for 2 or 4 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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8.25 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.

8.25.1 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.

8.26 ARM Cortex-M3 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 LPC1759/58/56/54/52/51, this

timer can be clocked from the internal AHB clock or from a device pin.

8.27 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.

8.27.1 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 (T_cy(WDCLK) 256  4) to (T_cy(WDCLK) 2³² 4) in

multiples of T_cy(WDCLK) 4.

• The Watchdog Clock (WDCLK) source can be selected from the Internal RC (IRC)

oscillator, the RTC 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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8.28 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 LPC1759/58/56/54/52/51 is designed to have extremely low

power consumption, i.e. less than 1 A. 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.

The RTC contains a small set of backup registers (20 bytes) for holding data while the

main part of the LPC1759/58/56/54/52/51 is powered off.

The RTC includes an alarm function that can wake up the LPC1759/58/56/54/52/51 from

all reduced power modes with a time resolution of 1 s.

8.28.1 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 (20 bytes) powered by VBAT.

• RTC power supply is isolated from the rest of the chip.

8.29 Clocking and power control

8.29.1 Crystal oscillators

The LPC1759/58/56/54/52/51 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 LPC1759/58/56/54/52/51 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 LPC1759/58/56/54/52/51 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. LPC1759/58/56/54/52/51 clocking generation block diagram

8.29.1.1 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 LPC1759/58/56/54/52/51 use the IRC as the clock

source. Software may later switch to one of the other available clock sources.

8.29.1.2 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 8.29.2 for additional information.

8.29.1.3 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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8.29.2 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.

8.29.3 USB PLL (PLL1)

The LPC1759/58/56/54/52/51 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.

8.29.4 Wake-up timer

The LPC1759/58/56/54/52/51 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

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 V_DD(3V3)ramp (in the case of power on), the type of crystal and its

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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.

8.29.5 Power control

The LPC1759/58/56/54/52/51 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 LPC1759/58/56/54/52/51 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.

8.29.5.1 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.

8.29.5.2 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.

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.

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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.

8.29.5.3 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 s 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 s 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.

8.29.5.4 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 LPC1759/58/56/54/52/51 can wake up from Deep power-down mode via the RESET

pin or an alarm match event of the RTC.

8.29.5.5 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 Wakeup Interrupt 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 Wakeup Interrupt Controller (WIC) eliminates the need to periodically wake up the

CPU and poll the interrupts resulting in additional power savings.

8.29.6 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.

8.29.7 Power domains

The LPC1759/58/56/54/52/51 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.

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On the LPC1759/58/56/54/52/51, I/O pads are powered by the 3.3 V (V_DD(3V3)) pins, while

the V_DD(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 LPC1759/58/56/54/52/51 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

V_DD(3V3)and V_DD(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 (V_DD(3V3)) and

a dedicated 3.3 V supply for the CPU (V_DD(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

(V_DD(REG)(3V3)) is used to operate the RTC whenever V_DD(REG)(3V3)is present. Therefore,

there is no power drain from the RTC battery when V_DD(REG)(3V3)is available.

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LPC17xx

V

to I/O pads

DD(3V3)

to core

V

SS

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

8.30 System control

8.30.1 Reset

Reset has four sources on the LPC17xx: 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, causes the RSTOUT pin to go LOW and starts the wake-up timer (see

description in Section 8.29.4). The wake-up timer ensures that reset remains 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. Once reset is

de-asserted, or, in case of a BOD-triggered reset, once the voltage rises above the BOD

threshold, the RSTOUT pin goes HIGH.

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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8.30.2 Brownout detection

The LPC1759/58/56/54/52/51 include 2-stage monitoring of the voltage on the

_DD(REG)(3V3)pins. If this voltage falls below 2.2 V, the BOD asserts an interrupt signal to

V

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

LPC1759/58/56/54/52/51 when the voltage on the V_DD(REG)(3V3)pins falls below 1.85 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 2.2 V and 1.85 V thresholds include some hysteresis. In normal operation, this

hysteresis allows the 2.2 V detection to reliably interrupt, or a regularly executed event

loop to sense the condition.

8.30.3 Code security (Code Read Protection - CRP)¹

This feature of the LPC1759/58/56/54/52/51 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.

8.30.4 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.

1. LPC1751FBD80 with device ID 25001110 does not support CRP feature. LPC1751FBD80 with device ID 25001118 does support

CRP. See errata note in ES_LPC1751.

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8.30.5 AHB multilayer matrix

The LPC1759/58/56/54/52/51 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.

8.30.6 External interrupt inputs

The LPC1759/58/56/54/52/51 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.

8.30.7 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 LPC1759/58/56/54/52/51 is configured for 128 total interrupts.

8.31 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.

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9. Limiting values

Table 5.

Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).^[1]

Symbol

Parameter

Conditions

Min

0.5

Max

+4.6

Unit

V

[2]

V_DD(3V3)

supply voltage (3.3 V)

external rail

V_DD(REG)(3V3)regulator supply voltage (3.3 V)

V

V_DDA

analog 3.3 V pad supply

voltage

V

[2]

V_i(VBAT)

V_i(VREFP)

V_IA

input voltage on pin VBAT

input voltage on pin VREFP

analog input voltage

input voltage

for the RTC

0.5

+4.6

+5.1

+5.5

V

[2][3]

[2][4]

on ADC related pins

V_I

5 V tolerant digital I/O pins;

V_DD 2.4 V

V_DD= 0 V

0.5

+3.6

100

I_DD

supply current

per supply pin

per ground pin

-

mA

I_SS

ground current

I/O latch-up current

I_latch

(0.5V_DD(3V3)) < V_I<

(1.5V_DD(3V3)); T_j< 125 C

[5]

[6]

T_stg

storage temperature

65

+150

1.5

C

P_tot(pack)

total power dissipation (per

package)

based on package heat

transfer, not device power

consumption

-

W

V_ESD

electrostatic discharge voltage human body model; all pins

4000

+4000

V

[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 V_SSunless

otherwise noted.

c) The limiting values are stress ratings only. Operating the part at these values is not recommended, and proper operation is not

guaranteed. The conditions for functional operation are specified in Table 7.

[2] Maximum/minimum voltage above the maximum operating voltage (see Table 7) and below ground that can be applied for a short time

(< 10 ms) to a device without leading to irrecoverable failure. Failure includes the loss of reliability and shorter lifetime of the device.

[3] See Table 18 for maximum operating voltage.

[4] Including voltage on outputs in 3-state mode.

[5] The maximum non-operating storage temperature is different than the temperature for required shelf life which should be determined

based on required shelf lifetime. Please refer to the JEDEC spec (J-STD-033B.1) for further details.

[6] Human body model: equivalent to discharging a 100 pF capacitor through a 1.5 k series resistor.

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10. Thermal characteristics

10.1 Thermal characteristics

The average chip junction temperature, T_J(C), can be calculated using the following

equation:

T_J= T_amb+ P_D R_{thj – a}

(1)

• T_amb= ambient temperature (C),

• R_th(j-a)= the package junction-to-ambient thermal resistance (C/W)

• P_D= sum of internal and I/O power dissipation

The internal power dissipation is the product of I_DDand V_DD. 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 6.

Thermal resistance (15 %)

Symbol Parameter

LQFP80

Conditions

Max/Min

Unit

R_th(j-a)

thermal resistance from

junction to ambient

JEDEC (4.5 in  4 in); still air

39.46

C/W

Single-layer (4.5 in  3 in); still air 59.39

R_th(j-c)

thermal resistance from

junction to case

6.769

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11. Static characteristics

Table 7.

Static characteristics

T_amb= 40 C to +85 C, unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ^[1]

Max

Unit

Supply pins

V_DD(3V3)

[2]

supply voltage (3.3 V)

external rail

2.4

3.3

3.6

V

V_DD(REG)(3V3)

regulator supply voltage

(3.3 V)

[3][4]

[5]

V_DDA

analog 3.3 V pad supply

voltage

2.5

2.1

2.5

3.3

3.6

V

V_i(VBAT)

input voltage on pin

VBAT

3.6

[3]

V_i(VREFP)

I_DD(REG)(3V3)

input voltage on pin

VREFP

V_DDA

regulator supply current active mode; code

(3.3 V)

while(1){}

executed from flash; all

peripherals disabled;

PCLK = ^CCLK

⁄

8

[6][7]

[6][8]

CCLK = 12 MHz; PLL

disabled

-

7

-

mA

CCLK = 100 MHz; PLL

enabled

42

50

67

CCLK = 100 MHz; PLL

enabled (LPC1759)

CCLK = 120 MHz; PLL

enabled (LPC1759)

-

mA

[6][9]

[6][10]

[11]

sleep mode

-

2

-

mA

A

nA

deep sleep mode

power-down mode

240

31

deep power-down mode;

RTC running

630

I_BAT

battery supply current

I/O supply current

Deep power-down mode;

RTC running

[12]

[13]

V_DD(REG)(3V3)present

-

530

-

nA

V_DD(REG)(3V3)not

present

1.1

40

10

-

A

nA

[14][15]

[14]

I_DD(IO)

deep sleep mode

-

power-down mode

deep power-down mode

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Table 7.

Static characteristics …continued

T_amb= 40 C to +85 C, unless otherwise specified.

Symbol

Parameter

Conditions

active mode;

ADC powered

Min

Typ^[1]

Max

Unit

[16][17]

[16][18]

I_DD(ADC)

ADC supply current

-

1.95

-

mA

ADC in Power-down

mode

-

<0.2

-

A

[16]

Deep sleep mode

Power-down mode

Deep power-down mode

on pin VREFP

-

38

24

-

nA

I_I(ADC)

ADC input current

[19]

Deep sleep mode

Power-down mode

-

100

-

nA

Deep power-down

mode

Standard port pins, RESET

I_IL

LOW-level input current V_I= 0 V; on-chip pull-up

resistor disabled

-

0.5

10

nA

I_IH

HIGH-level input

current

V_I= V_DD(3V3); on-chip

pull-down resistor

disabled

I_OZ

OFF-state output

current

V_O= 0 V; V_O= V_DD(3V3)

on-chip pull-up/down

resistors disabled

;

-

0.5

-

10

nA

V

[20][21]

[22]

V_I

input voltage

pin configured to provide

a digital function

0

5.0

V_O

output voltage

output active

0

-

V_DD(3V3)

-

V

V_IH

HIGH-level input

voltage

0.7V_DD(3V3)

V_IL

LOW-level input voltage

hysteresis voltage

-

0.3V_DD(3V3)

V

V_hys

V_OH

0.4

-

HIGH-level output

voltage

I_OH= 4 mA

V_DD(3V3)

0.4



V_OL

I_OH

LOW-level output

voltage

I_OL= 4 mA

-

0.4

-

V

HIGH-level output

current

V_OH= V_DD(3V3) 0.4 V

V_OL= 0.4 V

4

4

-

mA

I_OL

LOW-level output

current

-

[23]

I_OHS

I_OLS

HIGH-level short-circuit V_OH= 0 V

output current

45

50

LOW-level short-circuit V_OL= V_DD(3V3)

output current

-

I_pd

I_pu

pull-down current

pull-up current

V_I= 5 V

10

15

0

50

50

0

150

85

0

A

V_I= 0 V

V_DD(3V3)< V_I< 5 V

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Table 7.

Static characteristics …continued

T_amb= 40 C to +85 C, unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ^[1]

Max

Unit

Oscillator pins

V_i(XTAL1)

input voltage on pin

XTAL1

0.5

1.8

-

1.95

3.6

V

V_o(XTAL2)

V_i(RTCX1)

V_o(RTCX2)

output voltage on pin

XTAL2

input voltage on pin

RTCX1

output voltage on pin

RTCX2

-

3.6

USB pins

[2]

I_OZ

OFF-state output

current

0 V < V_I< 3.3 V

-

10

A

[2]

V_BUS

V_DI

bus supply voltage

-

5.25

-

V

differential input

(D+)  (D)

0.2

sensitivity voltage

[2]

V_CM

differential common

mode voltage range

includes V_DIrange

0.8

-

2.5

2.0

V

V_th(rs)se

single-ended receiver

switching threshold

voltage

[2]

V_OL

LOW-level output

voltage for

low-/full-speed

R_Lof 1.5 k to 3.6 V

R_Lof 15 k to GND

-

0.18

3.5

V

V_OH

HIGH-level output

voltage (driven) for

low-/full-speed

2.8

[2]

C_trans

Z_DRV

transceiver capacitance pin to GND

-

20

pF

[2][24]

driver output

with 33  series resistor;

steady state drive

36

44.1



impedance for driver

which is not high-speed

capable

[1] Typical ratings are not guaranteed. The values listed are at room temperature (25 C), nominal supply voltages.

[2] For USB operation 3.0 V  V_DD((3V3) 3.6 V. Guaranteed by design.

[3]

V_DDAand VREFP should be tied to V_DD(3V3)if the ADC and DAC are not used.

[4] V_DDAfor DAC specs are from 2.7 V to 3.6 V.

[5] The RTC typically fails when V_i(VBAT)drops below 1.6 V.

[6] V_DD(REG)(3V3)= 3.3 V; T_amb= 25 C for all power consumption measurements.

[7] Applies to LPC1758, LPC1756, LPC1754, LPC1752, LPC1751.

[8] Applies to LPC1759 only.

[9] IRC running at 4 MHz; main oscillator and PLL disabled; PCLK = ^CCLK⁄₈.

[10] BOD disabled.

[11] On pin V_DD(REG)(3V3). I_BAT= 530 nA. V_DD(REG)(3V3)= 3.0 V; V_BAT= 3.0 V; T_amb= 25 C.

[12] On pin VBAT. I_DD(REG)(3V3)= 630 nA. V_DD(REG)(3V3)= 3.0 V; V_BAT= 3.0 V. T_amb= 25 C.

[13] On pin VBAT. V_BAT= 3.0 V. T_amb= 25 C.

[14] All internal pull-ups disabled. All pins configured as output and driven LOW. V_DD(3V3)= 3.3 V; T_amb= 25 C.

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[15] TCK/SWDCLK pin needs to be externally pulled LOW.

[16] V_DDA= 3.3 V; T_amb= 25 C.

[17] The ADC is powered if the PDN bit in the AD0CR register is set to 1. See LPC17xx user manual UM10360.

[18] The ADC is in Power-down mode if the PDN bit in the AD0CR register is set to 0. See LPC17xx user manual UM10360.

[19] V_i(VREFP)= 3.3 V; T_amb= 25 C.

[20] Including voltage on outputs in 3-state mode.

[21] V_DD(3V3)supply voltage  2.4 V.

[22] 3-state outputs go into 3-state mode in Deep power-down mode.

[23] Allowed as long as the current limit does not exceed the maximum current allowed by the device.

[24] Includes external resistors of 33   1 % on D+ and D.

11.1 Power consumption

002aaf568

400

I

DD(Reg)(3V3)

(μA)

350

300

250

3.6 V

3.3 V

2.4 V

200

−40

−15

10

35

60

85

temperature (°C)

Conditions: V_DD(Reg)(3V3)= 3.3 V; BOD disabled.

Fig 6. Deep-sleep mode: Typical regulator supply current I_DD(Reg)(3V3)versus

temperature

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002aaf569

120

I

DD(Reg)(3V3)

(μA)

80

3.6 V

3.3 V

2.4 V

40

0

−40

−15

10

35

60

85

temperature (°C)

Conditions: V_DD(Reg)(3V3)= 3.3 V; BOD disabled.

Fig 7. Power-down mode: Typical regulator supply current I_DD(Reg)(3V3)versus

temperature

002aag119

1.8

V

= 3.6 V

3.3 V

3.0 V

2.4 V

I

i(VBAT)

BAT)

(μA)

1.4

1.0

0.6

-40

-15

10

35

60

85

temperature (°C)

Conditions: V_DD(REG)(3V3)floating; RTC running.

Fig 8. Deep power-down mode: Typical battery supply current I_BATversus temperature

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002aag120

2.0

I

/I

DD(REG)(3V3) BAT

(µA)

I

DD(REG)(3V3)

1.6

1.2

0.8

0.4

I

BAT

0

-40

-15

10

35

60

85

temperature (°C)

Conditions: V_BAT= 3.0 V; V_DD(REG)(3V3)= 3.0 V; RTC running.

Fig 9. Deep power-down mode: Typical regulator supply current I_DD(REG)(3V3)and battery

supply current I_BATversus temperature

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11.2 Peripheral power consumption

The supply current per peripheral is measured as the difference in supply current between

the peripheral block enabled and the peripheral block disabled in the PCONP register. All

other blocks are disabled and no code is executed. Measured on a typical sample at

T_amb= 25 C. The peripheral clock PCLK = CCLK/4.

Table 8.

Power consumption for individual analog and digital blocks

Peripheral

Conditions

Typical supply current in mA; Notes

CCLK =

12 MHz

0.03

48 MHz

0.11

100 MHz

0.23

Timer

UART

PWM

Average current per timer

Average current per UART

0.07

0.26

0.53

0.05

0.20

0.41

Motor control

PWM

0.05

0.21

0.42

I2C

0.02

0.04

2.12

0.08

0.06

0.16

2.09

0.16

0.13

0.32

2.07

Average current per I2C

SPI

SSP1

ADC

PCLK = 12 MHz for CCLK = 12 MHz

and 48 MHz; PCLK = 12.5 MHz for

CCLK = 100 MHz

CAN

PCLK = CCLK/6

0.13

0.22

0.49

0.85

1.00

1.73

Average current per CAN

CAN0, CAN1,

acceptance filter

Both CAN blocks and

acceptance filter^[1]

DMA

PCLK = CCLK

1.33

0.05

0.33

0.09

0.94

5.10

0.20

1.27

0.34

1.32

1.87

10.36

0.41

2.58

0.70

1.94

3.79

QEI

GPIO

I2S

USB and PLL1

Ethernet

Ethernet block enabled in the PCONP 0.49

register; Ethernet not connected.

Ethernet

connected

Ethernet initialized, connected to

network, and running web server

example.

-

5.19

[1] The combined current of several peripherals running at the same time can be less than the sum of each individual peripheral current

measured separately.

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11.3 Electrical pin characteristics

002aaf112

3.6

V

OH

(V)

T = 85 °C

25 °C

−40 °C

3.2

2.8

2.4

2.0

0

8

16

24

I

(mA)

OH

Conditions: V_DD(REG)(3V3)= V_DD(3V3)= 3.3 V; standard port pins.

Fig 10. Typical HIGH-level output voltage V_OHversus HIGH-level output source current

I_OH

002aaf111

15

I

OL

T = 85 °C

25 °C

−40 °C

(mA)

10

5

0

0.2

0.4

0.6

V

(V)

OL

Conditions: V_DD(REG)(3V3)= V_DD(3V3)= 3.3 V; standard port pins.

Fig 11. Typical LOW-level output current I_OLversus LOW-level output voltage V_OL

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002aaf108

10

I

pu

(μA)

−10

−30

−50

−70

T = 85 °C

25 °C

−40 °C

0

1

2

3

4

5

V (V)

I

Conditions: V_DD(REG)(3V3)= V_DD(3V3)= 3.3 V; standard port pins.

Fig 12. Typical pull-up current I_puversus input voltage V_I

002aaf109

90

I

pd

(μA)

70

T = 85 °C

25 °C

−40 °C

50

30

10

−10

0

1

2

3

4

5

V (V)

I

Conditions: V_DD(REG)(3V3)= V_DD(3V3)= 3.3 V; standard port pins.

Fig 13. Typical pull-down current I_pdversus input voltage V_I

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12. Dynamic characteristics

12.1 Flash memory

Table 9.

Flash characteristics

T_amb= 40 C to +85 C, unless otherwise specified.

Symbol

N_endu

t_ret

Parameter

endurance

Conditions

Min

10000

10

Typ

Max

Unit

[1]

100000

-

cycles

years

ms

retention time

powered

-

unpowered

20

-

t_er

erase time

sector or multiple

95

100

105

consecutive sectors

[2]

t_prog

programming time

0.95

1

1.05

ms

[1] Number of program/erase cycles.

[2] Programming times are given for writing 256 bytes from RAM to the flash. Data must be written to the flash in blocks of 256 bytes.

12.2 External clock

Table 10. Dynamic characteristic: external clock

T_amb= 40 C to +85 C; V_DD(3V3)over specified ranges.^[1]

Symbol

f_osc

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

T_cy(clk)

t_CHCX

t_CLCX

t_CLCH

t_CHCL

40

1000

T_cy(clk) 0.4

-

ns

T_cy(clk) 0.4

-

ns

-

5

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

CHCL

CLCX

CLCH

T

cy(clk)

002aaa907

Fig 14. External clock timing (with an amplitude of at least V_i(RMS)= 200 mV)

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12.3 Internal oscillators

Table 11. Dynamic characteristic: internal oscillators

T_amb= 40 C to +85 C; 2.7 V  V_DD(REG)(3V3) 3.6 V.^[1]

Symbol

f_osc(RC)

f_i(RTC)

Parameter

Conditions

Min

3.96

-

Typ^[2]

4.02

Max

4.04

-

Unit

MHz

kHz

internal RC oscillator frequency

RTC input frequency

-

32.768

[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.

002aaf107

4.036

f

osc(RC)

(MHz)

4.032

4.028

4.024

4.020

4.016

V

= 3.6 V

3.3 V

3.0 V

2.7 V

2.4 V

DD(REG)(3V3)

-40

-15

10

35

60

85

temperature (°C)

Conditions: Frequency values are typical values. 4 MHz  1 % accuracy is guaranteed for

2.7 V  V_DD(REG)(3V3)3.6 V and T_amb= 40 C to +85 C. Variations between parts may cause the

IRC to fall outside the 4 MHz  1 % accuracy specification for voltages below 2.7 V.

Fig 15. Internal RC oscillator frequency versus temperature

12.4 I/O pins

Table 12. Dynamic characteristic: I/O pins^[1]

T_amb= 40 C to +85 C; V_DD(3V3)over specified ranges.

Symbol

Parameter

rise time

fall time

Conditions

Min

3.0

2.5

Typ

Max

5.0

Unit

ns

t_r

t_f

pin configured as output

-

5.0

ns

[1] Applies to standard port pins.

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12.5 I²C-bus

Table 13. Dynamic characteristic: I²C-bus pins^[1]

T_amb= 40 C to +85 C.^[2]

Symbol

Parameter

Conditions

Standard-mode

Fast-mode

Min

Max

100

400

300

Unit

kHz

ns

f_SCL

SCL clock

frequency

0

-

[3][4][5][6]

t_f

fall time

of both SDA and

SCL signals

Standard-mode

Fast-mode

20 + 0.1  C_b300

ns

s

ns

t_LOW

LOW period of

the SCL clock

Standard-mode

Fast-mode

4.7

1.3

4.0

0.6

0

-

t_HIGH

HIGH period of

the SCL clock

Standard-mode

Fast-mode

[3][7][8]

[9]

t_HD;DAT

data hold time

Standard-mode

Fast-mode

0

t_SU;DAT

data set-up

time

Standard-mode

Fast-mode

250

100

[1] See the I²C-bus specification UM10204 for details.

[2] Parameters are valid over operating temperature range unless otherwise specified.

[3] A device must internally provide a hold time of at least 300 ns for the SDA signal (with respect to the

V_IH(min) of the SCL signal) to bridge the undefined region of the falling edge of SCL.

[4] C_b= total capacitance of one bus line in pF.

[5] The maximum t_ffor the SDA and SCL bus lines is specified at 300 ns. The maximum fall time for the SDA

output stage t_fis specified at 250 ns. This allows series protection resistors to be connected in between the

SDA and the SCL pins and the SDA/SCL bus lines without exceeding the maximum specified t_f.

[6] In Fast-mode Plus, fall time is specified the same for both output stage and bus timing. If series resistors

are used, designers should allow for this when considering bus timing.

[7] tHD;DAT is the data hold time that is measured from the falling edge of SCL; applies to data in transmission

and the acknowledge.

[8] The maximum t_HD;DATcould be 3.45 s and 0.9 s for Standard-mode and Fast-mode but must be less than

the maximum of t_VD;DATor t_VD;ACKby a transition time (see the I²C-bus specification UM10204). This

maximum must only be met if the device does not stretch the LOW period (t_LOW) of the SCL signal. If the

clock stretches the SCL, the data must be valid by the set-up time before it releases the clock.

[9] tSU;DAT is the data set-up time that is measured with respect to the rising edge of SCL; applies to data in

transmission and the acknowledge.

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t

f

t

SU;DAT

70 %

30 %

70 %

30 %

SDA

SCL

t

HD;DAT

VD;DAT

t

f

t

HIGH

70 %

30 %

70 %

30 %

70 %

30 %

70 %

30 %

t

LOW

1 / f

S

SCL

002aaf425

Fig 16. I²C-bus pins clock timing

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12.6 I²S-bus interface (LPC1759/58/56 only)

Table 14. Dynamic characteristics: I²S-bus interface pins

T_amb= 40 C to +85 C.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

common to input and output

[1]

t_r

rise time

-

35

-

ns

-

t_f

fall time

-

t_WH

pulse width HIGH

on pins I2STX_CLK and

I2SRX_CLK

0.495  T_cy(clk)

[1]

t_WL

pulse width LOW

on pins I2STX_CLK and

I2SRX_CLK

-

0.505  T_cy(clk)ns

output

[1]

t_v(Q)

data output valid time

on pin I2STX_SDA;

on pin I2STX_WS

-

30

ns

input

t_su(D)

t_h(D)

[1]

data input set-up time

data input hold time

on pin I2SRX_SDA

3.5

4.0

-

ns

[1] CCLK = 20 MHz; peripheral clock to the I²S-bus interface PCLK = ^CCLK⁄₄; T_cy(clk)= 1600 ns, corresponds to the SCK signal in the I²S-bus

specification.

T

t

r

cy(clk)

f

I2STX_CLK

I2STX_SDA

t

WL

WH

t

v(Q)

I2STX_WS

002aad992

t

v(Q)

Fig 17. I²S-bus timing (output)

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T

t

r

cy(clk)

f

I2SRX_CLK

t

WL

WH

I2SRX_SDA

I2SRX_WS

t

h(D)

su(D)

002aae159

t

su(D)

Fig 18. I²S-bus timing (input)

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12.7 SSP interface

Table 15. Dynamic characteristic: SSP interface

T_amb= 25 C; V_DD(3V3)over specified ranges.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

[1]

t_{su(SPI_MISO)}

SPI_MISO set-up time

measured in SPI Master mode;

see Figure 19

30

-

ns

[1] The peripheral clock for SSP is PCLK = CCLK = 20 MHz.

shifting edges

SCK

sampling edges

MOSI

MISO

t

su(SPI_MISO)

002aad326

Fig 19. SSP MISO line set-up time in SPI Master mode

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12.8 USB interface

Table 16. Dynamic characteristics: USB pins (full-speed)

C_L= 50 pF; R_pu= 1.5 k on D+ to V_DD(3V3); 3.0 V  V_DD(3V3) 3.6 V.

Symbol

Parameter

rise time

fall time

Conditions

10 % to 90 %

t_r/ t_f

Min

8.5

7.7

-

Typ

Max

13.8

13.7

109

Unit

ns

t_r

-

t_f

ns

t_FRFM

differential rise and fall time

matching

%

V_CRS

output signal crossover voltage

source SE0 interval of EOP

1.3

160

2

-

2.0

175

+5

V

t_FEOPT

t_FDEOP

see Figure 20

ns

source jitter for differential transition see Figure 20

to SE0 transition

t_JR1

receiver jitter to next transition

18.5

9

-

+18.5

ns

t_JR2

receiver jitter for paired transitions

EOP width at receiver

10 % to 90 %

+9

-

[1]

t_EOPR1

must reject as

EOP; see

Figure 20

40

t_EOPR2

EOP width at receiver

must accept as

EOP; see

82

-

ns

Figure 20

[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 20. Differential data-to-EOP transition skew and EOP width

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12.9 SPI

32-bit ARM Cortex-M3 microcontroller

Table 17. Dynamic characteristics of SPI pins

T_amb= 40 C to +85 C.

Symbol

T_cy(PCLK)

T_SPICYC

t_SPICLKH

t_SPICLKL

SPI master

t_SPIDSU

t_SPIDH

Parameter

Min

Typ Max

Unit

ns

PCLK cycle time

SPI cycle time

10

-

[1]

79.6

ns

SPICLK HIGH time

SPICLK LOW time

0.485  T_SPICYC

ns

0.515  T_SPICYCns

[2]

SPI data set-up time

0

-

ns

SPI data hold time

2  T_cy(PCLK) 5

2  T_cy(PCLK)+ 30

2  T_cy(PCLK)+ 5

t_SPIQV

SPI data output valid time

SPI output data hold time

t_SPIOH

SPI slave

t_SPIDSU

t_SPIDH

[2]

SPI data set-up time

0

-

ns

SPI data hold time

2  T_cy(PCLK)+ 5

2  T_cy(PCLK)+ 35

2  T_cy(PCLK)+ 15

t_SPIQV

SPI data output valid time

SPI output data hold time

t_SPIOH

[1] T_SPICYC= (T_cy(PCLK) n)  0.5 %, n is the SPI clock divider value (n  8); PCLK is derived from the

processor clock CCLK.

[2] Timing parameters are measured with respect to the 50 % edge of the clock PCLK and the 10 % (90 %)

edge of the data signal (MOSI or MISO).

T

t

SPICLKH

t

SPICYC

SPICLKL

SCK (CPOL = 0)

SCK (CPOL = 1)

MOSI

t

SPIOH

SPIQV

DATA VALID

t

SPIDH

SPIDSU

MISO

DATA VALID

002aad986

Fig 21. SPI master timing (CPHA = 1)

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T

t

SPICLKH

t

SPICYC

SPICLKL

SCK (CPOL = 0)

SCK (CPOL = 1)

MOSI

t

SPIOH

SPIQV

DATA VALID

t

SPIDH

SPIDSU

DATA VALID

MISO

002aad987

Fig 22. SPI master timing (CPHA = 0)

T

t

SPICLKH

t

SPICYC

SPICLKL

SCK (CPOL = 0)

SCK (CPOL = 1)

t

SPIDH

SPIDSU

MOSI

MISO

DATA VALID

t

SPIOH

SPIQV

DATA VALID

002aad988

Fig 23. SPI slave timing (CPHA = 1)

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T

t

SPICLKH

t

SPICYC

SPICLKL

SCK (CPOL = 0)

SCK (CPOL = 1)

t

SPIDH

SPIDSU

MOSI

MISO

DATA VALID

t

SPIOH

SPIQV

DATA VALID

002aad989

Fig 24. SPI slave timing (CPHA = 0)

13. ADC electrical characteristics

Table 18. ADC characteristics (full resolution)

V_DDA= 2.5 V to 3.6 V; T_amb= 40 C to +85 C unless otherwise specified; ADC frequency 13 MHz; 12-bit resolution.^[1]

Symbol

V_IA

Parameter

Conditions

Min

Typ

Max

V_DDA

15

Unit

V

analog input voltage

analog input capacitance

differential linearity error

integral non-linearity

offset error

0

-

C_ia

pF

[2][3]

[4]

E_D

1

LSB

%

E_L(adj)

E_O

3

[5][6]

[7]

2

E_G

gain error

0.5

4

[8]

E_T

absolute error

LSB

k

[9]

R_vsi

voltage source interface

resistance

7.5

f_clk(ADC)

f_c(ADC)

ADC clock frequency

-

13

MHz

kHz

[10]

ADC conversion frequency

200

[1] V_DDAand VREFP should be tied to V_DD(3V3)if the ADC and DAC are not used.

[2] The ADC is monotonic, there are no missing codes.

[3] The differential linearity error (E_D) is the difference between the actual step width and the ideal step width. See Figure 25.

[4] The integral non-linearity (E_L(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 25.

[5] The offset error (E_O) is the absolute difference between the straight line which fits the actual curve and the straight line which fits the

ideal curve. See Figure 25.

[6] ADCOFFS value (bits 7:4) = 2 in the ADTRM register. See LPC17xx user manual UM10360.

[7] The gain error (E_G) 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 25.

[8] The absolute error (E_T) 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 25.

[9] See Figure 26.

[10] The conversion frequency corresponds to the number of samples per second.

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Table 19. ADC characteristics (lower resolution)

T_amb= 40 C to +85 C unless otherwise specified; 12-bit ADC used as 10-bit resolution ADC.^[1]

Symbol Parameter

Conditions

Min

Typ

1

1.5

2

-

Max

-

Unit

LSB

MHz

kHz

[2][3]

[4]

E_D

differential linearity error

-

E_L(adj)

E_O

integral non-linearity

offset error

-

[5]

-

[6]

E_G

gain error

-

f_clk(ADC)ADC clock frequency

3.0 V  V_DDA 3.6 V

2.7 V  V_DDA< 3.0 V

33

25

500

400

-

[7]

f_c(ADC)

ADC conversion frequency 3 V  V_DDA 3.6 V

2.7 V  V_DDA< 3.0 V

-

kHz

[1] V_DDAand VREFP should be tied to V_DD(3V3)if the ADC and DAC are not used.

[2] The ADC is monotonic, there are no missing codes.

[3] The differential linearity error (E_D) is the difference between the actual step width and the ideal step width. See Figure 25.

[4] The integral non-linearity (E_L(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 25.

[5] The offset error (E_O) is the absolute difference between the straight line which fits the actual curve and the straight line which fits the

ideal curve. See Figure 25.

[6] The gain error (E_G) 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 25.

[7] The conversion frequency corresponds to the number of samples per second.

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offset

error

gain

error

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

(LSB

)

ideal

IA

offset error

E

O

VREFP − VREFN

1 LSB =

4096

002aad948

(1) Example of an actual transfer curve.

(2) The ideal transfer curve.

(3) Differential linearity error (E_D).

(4) Integral non-linearity (E_L(adj)).

(5) Center of a step of the actual transfer curve.

Fig 25. 12-bit ADC characteristics

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LPC17xx

R

i2

100 Ω - 600 Ω

i1

2 kΩ - 5.2 kΩ

C3

2.2 pF

ADC

COMPARATOR

BLOCK

AD0[n]

C1

750 fF

C2

65 fF

C

R

ia

vsi

V

SS

EXT

002aaf197

The values of resistor components R_i1and R_i2vary with temperature and input voltage and are

process-dependent (see Table 20).

Parasitic resistance and capacitance from the pad are not included in this figure.

Fig 26. ADC interface to pins AD0[n]

Table 20. ADC interface components

Component

Range

Description

R_i1

2 k to 5.2 k

Switch-on resistance for channel selection switch. Varies with

temperature, input voltage, and process.

R_i2

100  to 600 

Switch-on resistance for the comparator input switch. Varies

with temperature, input voltage, and process.

C1

C2

C3

750 fF

65 fF

Parasitic capacitance from the ADC block level.

Sampling capacitor.

2.2 pF

14. DAC electrical characteristics (LPC1759/58/56/54 only)

Table 21. DAC electrical characteristics

V_DDA= 2.7 V to 3.6 V; T_amb= 40 C to +85 C unless otherwise specified

Symbol

E_D

Parameter

Conditions

Min

Typ

1

Max

Unit

LSB

%

differential linearity error

integral non-linearity

offset error

-

E_L(adj)

E_O

1.5

0.6

200

-

E_G

gain error

-

%

C_L

load capacitance

load resistance

-

pF

R_L

1

k

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15. Application information

15.1 Suggested USB interface solutions

If the LPC1759/58/56/54/52/51 V_DDis always greater than 0 V while V_BUS= 5 V, the V_BUS

pin can be connected directly to the V_BUSpin on the USB connector.

This applies to bus powered devices where the USB cable supplies the system power. For

systems where V_DDcan be 0 V and V_BUSis directly applied to the V_BUSpin, precautions

must be taken to reduce the voltage to below 3.6 V.

V

DD(3V3)

R2

LPC17xx

R1

1.5 kΩ

USB_UP_LED

V

BUS

USB-B

connector

R

= 33 Ω

S

USB_D+

S

USB_D−

V

SS

002aad940

Fig 27. LPC1759/58/56/54/52/51 USB interface on a bus-powered device

The maximum allowable voltage on the V_BUSpin is 3.6 V. One method is to use a voltage

divider to connect the V_BUSpin to the V_BUSon the USB connector.

The voltage divider ratio should be such that the V_BUSpin will be greater than 0.7V_DDto

indicate a logic HIGH while below the 3.6 V allowable maximum voltage.

Use the following operating conditions:

VBUS_max= 5.25 V

V_DD= 3.6 V

The voltage divider would need to provide a reduction of 3.6 V/5.25 V or ~0.686 V.

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V

DD

R2

LPC17xx

R1

1.5 kΩ

R3

USB_UP_LED

USB_VBUS

USB-B

connector

R

= 33 Ω

S

USB_D+

USB_D-

R

V

SS

aaa-008962

Fig 28. USB interface on a bus-powered device where V_BUS= 5 V, V_DDnot present

V

DD(3V3)

USB_UP_LED

USB_CONNECT

LPC17xx

SoftConnect switch

R1

1.5 kΩ

V

BUS

R

= 33 Ω

S

USB-B

connector

USB_D+

S

USB_D−

V

SS

002aad939

Fig 29. LPC1759/58/56/54/52/51 USB interface with soft-connect

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V

DD

V

RSTOUT

RESET_N

ADR/PSW

OE_N/INT_N

SPEED

BUS

ID

33 Ω

DP

V

DD

Mini-AB

33 Ω

connector

DM

ISP1302

SUSPEND

LPC1759/58/

56/54

V

SS

SCL

SDA

SCL1/2

SDA1/2

INT_N

EINT0

USB_D+

USB_D−

USB_UP_LED

002aae155

V

DD

Fig 30. LPC1759/58/56/54 USB OTG port configuration

V

DD

USB_UP_LED

V

SS

33 Ω

D+

USB_D+

USB_D−

D−

USB-A

connector

LPC1759/58/

56/54

15 kΩ

V

DD

V

USB_PWRD

USB_PPWR

BUS

FLAGA

OUTA

ENA

5 V

LM3526-L

IN

002aae156

Fig 31. LPC1759/58/56/54 USB host port configuration

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V

DD

USB_UP_LED

V

DD

USB_CONNECT

LPC17xx

V

SS

33 Ω

USB_D+

D+

USB-B

connector

D−

USB_D−

V

BUS

V

BUS

002aad943

Fig 32. LPC1759/58/56/54/52/51 USB device port configuration

15.2 Crystal oscillator XTAL input and component selection

The input voltage to the on-chip oscillators is limited to 1.8 V. If the oscillator is driven by a

clock in slave mode, it is recommended that the input be coupled through a capacitor with

C_i= 100 pF. To limit the input voltage to the specified range, choose an additional

capacitor to ground C_gwhich attenuates the input voltage by a factor C_i/(C_i+ C_g). In slave

mode, a minimum of 200 mV(RMS) is needed.

LPC1xxx

XTAL1

C

i

C

g

100 pF

002aae835

Fig 33. Slave mode operation of the on-chip oscillator

In slave mode the input clock signal should be coupled by means of a capacitor of 100 pF

(Figure 33), with an amplitude between 200 mV(RMS) and 1000 mV(RMS). This

corresponds to a square wave signal with a signal swing of between 280 mV and 1.4 V.

The XTALOUT pin in this configuration can be left unconnected.

External components and models used in oscillation mode are shown in Figure 34 and in

Table 22 and Table 23. Since the feedback resistance is integrated on chip, only a crystal

and the capacitances C_X1and C_X2need to be connected externally in case of

fundamental mode oscillation (the fundamental frequency is represented by L, C_Land

R_S). Capacitance C_Pin Figure 34 represents the parallel package capacitance and should

not be larger than 7 pF. Parameters F_OSC, C_L, R_Sand C_Pare supplied by the crystal

manufacturer.

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LPC1xxx

L

XTALIN

XTALOUT

C

L

C

P

=

XTAL

R

S

C

X2

C

X1

002aaf424

Fig 34. Oscillator modes and models: oscillation mode of operation and external crystal

model used for C_X1/C_X2evaluation

Table 22. Recommended values for C_X1/C_X2in oscillation mode (crystal and external

components parameters): low frequency mode

Fundamental oscillation Crystal load

Maximum crystal

External load

frequency F_OSC

capacitance C_L

series resistance R_S

capacitors C_X1/C_X2

1 MHz to 5 MHz

10 pF

< 300 

< 200 

< 100 

< 160 

< 60 

18 pF, 18 pF

39 pF, 39 pF

57 pF, 57 pF

18 pF, 18 pF

39 pF, 39 pF

57 pF, 57 pF

18 pF, 18 pF

39 pF, 39 pF

18 pF, 18 pF

20 pF

30 pF

5 MHz to 10 MHz

10 pF

20 pF

30 pF

10 MHz to 15 MHz

15 MHz to 20 MHz

10 pF

20 pF

10 pF

< 80 

Table 23. Recommended values for C_X1/C_X2in oscillation mode (crystal and external

components parameters): high frequency mode

Fundamental oscillation Crystal load

Maximum crystal

External load

frequency F_OSC

capacitance C_L

series resistance R_S

capacitors C_X1, C_X2

15 MHz to 20 MHz

10 pF

< 180 

< 100 

< 160 

< 80 

18 pF, 18 pF

39 pF, 39 pF

18 pF, 18 pF

39 pF, 39 pF

20 pF

20 MHz to 25 MHz

10 pF

20 pF

15.3 XTAL Printed-Circuit Board (PCB) layout guidelines

The crystal should be connected on the PCB as close as possible to the oscillator input

and output pins of the chip. Take care that the load capacitors C_x1, C_x2, and C_x3in case of

third overtone crystal usage have a common ground plane. The external components

must also be connected to the ground plain. Loops must be made as small as possible in

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order to keep the noise coupled in via the PCB as small as possible. Also parasitics

should stay as small as possible. Values of C_x1and C_x2should be chosen smaller

accordingly to the increase in parasitics of the PCB layout.

15.4 Standard I/O pin configuration

Figure 35 shows the possible pin modes for standard I/O pins with analog input function:

• Digital output driver: Open-drain mode enabled/disabled

• Digital input: Pull-up enabled/disabled

• Digital input: Pull-down enabled/disabled

• Digital input: Repeater mode enabled/disabled

• Analog input

The default configuration for standard I/O pins is input with pull-up enabled. The weak

MOS devices provide a drive capability equivalent to pull-up and pull-down resistors.

V

DD

open-drain enable

output enable

data output

strong

pull-up

ESD

pin configured

as digital output

driver

strong

pull-down

ESD

V

SS

V

DD

weak

pull-up

pull-up enable

weak

pull-down

repeater mode

enable

pin configured

as digital input

pull-down enable

data input

select analog input

pin configured

as analog input

analog input

002aaf272

Fig 35. Standard I/O pin configuration with analog input

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15.5 Reset pin configuration

V

DD

V

DD

V

DD

R

pu

ESD

20 ns RC

GLITCH FILTER

reset

ESD

V

SS

002aaf274

Fig 36. Reset pin configuration

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15.6 ElectroMagnetic Compatibility (EMC)

Radiated emission measurements according to the IEC61967-2 standard using the

TEM-cell method are shown for part LPC1768.

Table 24. ElectroMagnetic Compatibility (EMC) for part LPC1768 (TEM-cell method)

V_DD= 3.3 V; T_amb= 25 C.

Parameter

Frequency band

System clock =

Unit

12 MHz 24 MHz 48 MHz 72 MHz 100 MHz

Input clock: IRC (4 MHz)

maximum

peak level

150 kHz to 30 MHz

7

6

+5

+4

O

4

7

+9

+19

L

dBV

-

30 MHz to 150 MHz +1

+11

N

+16

+12

M

150 MHz to 1 GHz

-

2

IEC level^[1]

O

Input clock: crystal oscillator (12 MHz)

maximum

peak level

150 kHz to 30 MHz

5

4

+5

+6

O

4

7

8

+7

+16

M

dBV

-

30 MHz to 150 MHz 1

+10

+11

N

+15

+10

M

150 MHz to 1 GHz

-

1

IEC level^[1]

O

[1] IEC levels refer to Appendix D in the IEC61967-2 Specification.

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16. 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)

UNIT

A

b

c

D

E

e

H

D

H

L

p

v

w

y

Z

θ

1

2

3

p

E

D

E

max.

7^o

0^o

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 37. Package outline (LQFP80)

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17. Soldering

Footprint information for reflow soldering of LQFP80 package

SOT315-1

Hx

Gx

(0.125)

P2

P1

Hy Gy

By

Ay

C

D2 (8×)

D1

Bx

Ax

Generic footprint pattern

Refer to the package outline drawing for actual layout

solder land

occupied area

DIMENSIONS in mm

P1 P2 Ax

Ay

Bx

By

C

D1

D2

Gx

Gy

Hx

Hy

0.500 0.560 15.300 15.300 12.300 12.300 1.500 0.280 0.400 12.500 12.500 15.550 15.550

sot315-1_fr

Fig 38. Reflow soldering for the LQFP80 package

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18. Abbreviations

Table 25. Abbreviations

Acronym

ADC

AHB

AMBA

APB

BOD

CAN

DAC

DMA

EOP

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

Direct Memory Access

End Of Packet

General Purpose Input/Output

Internal RC

IrDA

JTAG

MAC

MIIM

OTG

PHY

PLL

Infrared Data Association

Joint Test Action Group

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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19. Revision history

Table 26. Revision history

Document ID

Release date

Data sheet status

Product data sheet

Change Supersedes

notice

LPC1759_58_56_54_52_51 v.8.4 20140404

-

LPC1759_58_56_54_52_51 v.8.3

Modifications:

• Table 4 “Pin description”: Changed RX_MCLK and TX_MCLK type from INPUT to

OUTPUT.

LPC1759_58_56_54_52_51 v.8.3 20140108

Modifications: • Table 6 “Thermal resistance (±15 %)”: Added 15 % to table title.

LPC1759_58_56_54_52_51 v.8.2 20131018 Product data sheet LPC1759_58_56_54_52_51 v.8.1

Product data sheet

-

LPC1759_58_56_54_52_51 v.8.2

-

Modifications:

• Table 5 “Limiting values”: Removed condition “5 V tolerant open-drain pins...” from

V_I.

• Table 7 “Static characteristics”:

–

Added Table note 3 “VDDA and VREFP should be tied to VDD(3V3) if the ADC

and DAC are not used.”

–

Added Table note 4 “VDDA for DAC specs are from 2.7 V to 3.6 V.”

V_DDA/VREFP spec changed from 2.7 V to 2.5 V.

• Table 18 “ADC characteristics (full resolution)”:

–

Added Table note 1 “VDDA and VREFP should be tied to VDD(3V3) if the ADC

and DAC are not used.”

–

V_DDAchanged from 2.7 V to 2.5 V.

• Table 19 “ADC characteristics (lower resolution)”: Added Table note 1 “VDDA and

VREFP should be tied to VDD(3V3) if the ADC and DAC are not used.”

LPC1759_58_56_54_52_51 v.8.1 20130912

Product data sheet

-

LPC1759_58_56_54_52_51 v.8

Modifications:

• Added Table 6 “Thermal resistance”.

• Table 5 “Limiting values”:

–

Updated min/max values for V_DD(3V3)and V_DD(REG)(3V3)

.

Updated conditions for V_I.

Updated table notes.

• Table 7 “Static characteristics”: Added Table note 14 “TCK/SWDCLK pin needs to

be externally pulled LOW.”

• Updated Section 15.1 “Suggested USB interface solutions”.

• Added Section 5 “Marking”.

• Changed title of Figure 29 from “USB interface on a self-powered device” to “USB

interface with soft-connect”.

LPC1759_58_56_54_52_51 v.8

20120809

Product data sheet

-

LPC1759_58_56_54_52_51 v.7

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Table 26. Revision history …continued

Document ID

Release date

Data sheet status

Change Supersedes

notice

Modifications:

• Remove table note “The peak current is limited to 25 times the corresponding

maximum current.” from Table 4 “Limiting values”.

• Change V_DD(3V3)to V_DD(REG)(3V3)in Section 11.3 “Internal oscillators”.

• Glitch filter constant changed to 10 ns in Table note 5 in Table 3.

• Description of RESET function updated in Table 3.

• Pull-up value added for GPIO pins in Table 3.

• Pin configuration diagram for LQFP80 package corrected (Figure 2).

• Pin description of USB_UP_LED pin updated in Table 3.

• R_i1and R_i2labels in Figure 26 updated.

• Table note 9 updated in Table 3.

• Table note 1 updated in Table 12.

• Electromagnetic compatibility data added in Section 14.6.

• Section 16 added.

LPC1759_58_56_54_52_51 v.7

Modifications:

20110329

Product data sheet

-

LPC1759_58_56_54_52_51 v.6

• Pin description of pins P0[29] and P0[30] updated in Table note 4 of Table 3. Pins

are not 5 V tolerant.

• Typical value for Parameter N_enduadded in Table 8.

• Condition 3.0 V  V_DD(3V3) 3.6 V added in Table 15.

• Typical values for parameters I_DD(REG)(3V3)and I_BATwith condition Deep

power-down mode corrected in Table 6 and Table note 9, Table note 10, and Table

note 11 updated.

• For Deep power-down mode, Figure 8 updated and Figure 9 added.

LPC1759_58_56_54_52_51 v.6

Modifications:

20100825

Product data sheet

-

LPC1759_58_56_54_52_51 v.5

• Section 7.30.2; BOD level corrected.

• Added Section 10.2.

LPC1759_58_56_54_52_51 v.5

LPC1759_58_56_54_52_51 v.4

LPC1758_56_54_52_51 v.3

LPC1758_56_54_52_51 v.2

LPC1758_56_54_52_51 v.1

20100716

20100126

20091119

20090211

20090115

Product data sheet

Objective data sheet

-

LPC1759_58_56_54_52_51 v.4

LPC1758_56_54_52_51 v.3

LPC1758_56_54_52_51 v.2

LPC1758_56_54_52_51 v.1

-

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20. Legal information

20.1 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.

Suitability for use — NXP Semiconductors products are not designed,

20.2 Definitions

authorized or warranted to be suitable for use in life support, life-critical or

safety-critical systems or equipment, nor in applications where failure or

malfunction of an NXP Semiconductors product can reasonably be expected

to result in personal injury, death or severe property or environmental

damage. NXP Semiconductors and its suppliers accept 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.

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.

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.

Customers are responsible for the design and operation of their applications

and products using NXP Semiconductors products, and NXP Semiconductors

accepts no liability for any assistance with applications or customer product

design. It is customer’s sole responsibility to determine whether the NXP

Semiconductors product is suitable and fit for the customer’s applications and

products planned, as well as for the planned application and use of

customer’s third party customer(s). Customers should provide appropriate

design and operating safeguards to minimize the risks associated with their

applications and products.

Product specification — The information and data provided in a Product

data sheet shall define the specification of the product as agreed between

NXP Semiconductors and its customer, unless NXP Semiconductors and

customer have explicitly agreed otherwise in writing. In no event however,

shall an agreement be valid in which the NXP Semiconductors product is

deemed to offer functions and qualities beyond those described in the

Product data sheet.

NXP Semiconductors does not accept any liability related to any default,

damage, costs or problem which is based on any weakness or default in the

customer’s applications or products, or the application or use by customer’s

third party customer(s). Customer is responsible for doing all necessary

testing for the customer’s applications and products using NXP

Semiconductors products in order to avoid a default of the applications and

the products or of the application or use by customer’s third party

customer(s). NXP does not accept any liability in this respect.

20.3 Disclaimers

Limited warranty and liability — 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. NXP Semiconductors takes no

responsibility for the content in this document if provided by an information

source outside of NXP Semiconductors.

Limiting values — Stress above one or more limiting values (as defined in

the Absolute Maximum Ratings System of IEC 60134) will cause permanent

damage to the device. Limiting values are stress ratings only and (proper)

operation of the device at these or any other conditions above those given in

the Recommended operating conditions section (if present) or the

Characteristics sections of this document is not warranted. Constant or

repeated exposure to limiting values will permanently and irreversibly affect

the quality and reliability of the device.

In no event shall NXP Semiconductors be liable for any indirect, incidental,

punitive, special or consequential damages (including - without limitation - lost

profits, lost savings, business interruption, costs related to the removal or

replacement of any products or rework charges) whether or not such

damages are based on tort (including negligence), warranty, breach of

contract or any other legal theory.

Terms and conditions of commercial 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, unless otherwise

agreed in a valid written individual agreement. In case an individual

agreement is concluded only the terms and conditions of the respective

agreement shall apply. NXP Semiconductors hereby expressly objects to

applying the customer’s general terms and conditions with regard to the

purchase of NXP Semiconductors products by customer.

Notwithstanding any damages that customer might incur for any reason

whatsoever, NXP Semiconductors’ aggregate and cumulative liability towards

customer for the products described herein shall be limited in accordance

with the Terms and conditions of commercial sale of NXP Semiconductors.

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.

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.

LPC1759_58_56_54_52_51

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 8.4 — 4 April 2014

76 of 79

LPC1759/58/56/54/52/51

NXP Semiconductors

32-bit ARM Cortex-M3 microcontroller

Export control — This document as well as the item(s) described herein

may be subject to export control regulations. Export might require a prior

authorization from competent authorities.

whenever customer uses the product for automotive applications beyond

NXP Semiconductors’ specifications such use shall be solely at customer’s

own risk, and (c) customer fully indemnifies NXP Semiconductors for any

liability, damages or failed product claims resulting from customer design and

use of the product for automotive applications beyond NXP Semiconductors’

standard warranty and NXP Semiconductors’ product specifications.

Non-automotive qualified products — Unless this data sheet expressly

states that this specific NXP Semiconductors product is automotive qualified,

the product is not suitable for automotive use. It is neither qualified nor tested

in accordance with automotive testing or application requirements. NXP

Semiconductors accepts no liability for inclusion and/or use of

20.4 Trademarks

non-automotive qualified products in automotive equipment or applications.

In the event that customer uses the product for design-in and use in

automotive applications to automotive specifications and standards, customer

(a) shall use the product without NXP Semiconductors’ warranty of the

product for such automotive applications, use and specifications, and (b)

Notice: All referenced brands, product names, service names and trademarks

are the property of their respective owners.

I²C-bus — logo is a trademark of NXP Semiconductors N.V.

21. Contact information

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: salesaddresses@nxp.com

LPC1759_58_56_54_52_51

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 8.4 — 4 April 2014

77 of 79

LPC1759/58/56/54/52/51

NXP Semiconductors

32-bit ARM Cortex-M3 microcontroller

22. Contents

1

General description. . . . . . . . . . . . . . . . . . . . . . 1

8.18

8.18.1

8.19

8.19.1

8.20

SSP serial I/O controller. . . . . . . . . . . . . . . . . 23

Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

I²C-bus serial I/O controllers . . . . . . . . . . . . . 24

Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

I²S-bus serial I/O controllers

(LPC1759/58/56 only) . . . . . . . . . . . . . . . . . . 24

Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

General purpose 32-bit timers/external

2

Features and benefits . . . . . . . . . . . . . . . . . . . . 1

Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Ordering information. . . . . . . . . . . . . . . . . . . . . 4

Ordering options. . . . . . . . . . . . . . . . . . . . . . . . 4

Marking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3

4

4.1

5

8.20.1

8.21

6

event counters . . . . . . . . . . . . . . . . . . . . . . . . 25

Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Pulse width modulator . . . . . . . . . . . . . . . . . . 26

Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Motor control PWM . . . . . . . . . . . . . . . . . . . . 27

Quadrature Encoder Interface (QEI) . . . . . . . 27

Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Repetitive Interrupt (RI) timer. . . . . . . . . . . . . 28

Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

ARM Cortex-M3 system tick timer . . . . . . . . . 28

Watchdog timer . . . . . . . . . . . . . . . . . . . . . . . 28

Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

RTC and backup registers . . . . . . . . . . . . . . . 29

Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Clocking and power control . . . . . . . . . . . . . . 29

Crystal oscillators. . . . . . . . . . . . . . . . . . . . . . 29

7

7.1

7.2

Pinning information. . . . . . . . . . . . . . . . . . . . . . 7

Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 7

8.21.1

8.22

8.22.1

8.23

8.24

8.24.1

8.25

8.25.1

8.26

8.27

8.27.1

8.28

8.28.1

8.29

8

8.1

8.2

8.3

8.4

8.5

8.6

8.7

Functional description . . . . . . . . . . . . . . . . . . 14

Architectural overview . . . . . . . . . . . . . . . . . . 14

ARM Cortex-M3 processor . . . . . . . . . . . . . . . 14

On-chip flash program memory . . . . . . . . . . . 14

On-chip SRAM . . . . . . . . . . . . . . . . . . . . . . . . 14

Memory Protection Unit (MPU). . . . . . . . . . . . 15

Memory map. . . . . . . . . . . . . . . . . . . . . . . . . . 15

Nested Vectored Interrupt Controller (NVIC) . 17

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Interrupt sources. . . . . . . . . . . . . . . . . . . . . . . 17

Pin connect block . . . . . . . . . . . . . . . . . . . . . . 17

General purpose DMA controller . . . . . . . . . . 17

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Fast general purpose parallel I/O . . . . . . . . . . 18

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Ethernet (LPC1758 only) . . . . . . . . . . . . . . . . 19

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

USB interface . . . . . . . . . . . . . . . . . . . . . . . . . 20

USB device controller . . . . . . . . . . . . . . . . . . . 20

8.7.1

8.7.2

8.8

8.9

8.29.1

8.9.1

8.10

8.10.1

8.11

8.11.1

8.12

8.12.1

8.29.1.1 Internal RC oscillator . . . . . . . . . . . . . . . . . . . 30

8.29.1.2 Main oscillator . . . . . . . . . . . . . . . . . . . . . . . . 30

8.29.1.3 RTC oscillator . . . . . . . . . . . . . . . . . . . . . . . . 30

8.29.2

8.29.3

8.29.4

8.29.5

Main PLL (PLL0) . . . . . . . . . . . . . . . . . . . . . . 31

USB PLL (PLL1) . . . . . . . . . . . . . . . . . . . . . . 31

Wake-up timer . . . . . . . . . . . . . . . . . . . . . . . . 31

Power control. . . . . . . . . . . . . . . . . . . . . . . . . 32

8.12.1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

8.12.2

8.29.5.1 Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8.29.5.2 Deep-sleep mode. . . . . . . . . . . . . . . . . . . . . . 32

8.29.5.3 Power-down mode. . . . . . . . . . . . . . . . . . . . . 33

8.29.5.4 Deep power-down mode . . . . . . . . . . . . . . . . 33

8.29.5.5 Wakeup interrupt controller . . . . . . . . . . . . . . 33

USB host controller

(LPC1759/58/56/54 only).. . . . . . . . . . . . . . . . 21

8.12.2.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

8.12.3

USB OTG controller

(LPC1759/58/56/54 only).. . . . . . . . . . . . . . . . 21

8.29.6

8.29.7

8.30

8.30.1

8.30.2

8.30.3

Peripheral power control . . . . . . . . . . . . . . . . 33

Power domains . . . . . . . . . . . . . . . . . . . . . . . 33

System control . . . . . . . . . . . . . . . . . . . . . . . . 35

Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Brownout detection . . . . . . . . . . . . . . . . . . . . 36

Code security

(Code Read Protection - CRP) . . . . . . . . . . . 36

APB interface. . . . . . . . . . . . . . . . . . . . . . . . . 36

AHB multilayer matrix . . . . . . . . . . . . . . . . . . 37

External interrupt inputs. . . . . . . . . . . . . . . . . 37

Memory mapping control . . . . . . . . . . . . . . . . 37

Emulation and debugging . . . . . . . . . . . . . . . 37

8.12.3.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

8.13

8.13.1

8.14

8.14.1

8.15

8.15.1

8.16

8.16.1

8.17

CAN controller and acceptance filters . . . . . . 21

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

12-bit ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

10-bit DAC (LPC1759/58/56/54 only). . . . . . . 22

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

UARTs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

SPI serial I/O controller. . . . . . . . . . . . . . . . . . 23

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

8.30.4

8.30.5

8.30.6

8.30.7

8.31

8.17.1

continued >>

LPC1759_58_56_54_52_51

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 8.4 — 4 April 2014

78 of 79

LPC1759/58/56/54/52/51

NXP Semiconductors

32-bit ARM Cortex-M3 microcontroller

9

Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 38

10

10.1

Thermal characteristics . . . . . . . . . . . . . . . . . 39

Thermal characteristics. . . . . . . . . . . . . . . . . . 39

11

Static characteristics. . . . . . . . . . . . . . . . . . . . 40

Power consumption . . . . . . . . . . . . . . . . . . . . 43

Peripheral power consumption. . . . . . . . . . . . 46

Electrical pin characteristics . . . . . . . . . . . . . . 47

11.1

11.2

11.3

12

Dynamic characteristics . . . . . . . . . . . . . . . . . 49

Flash memory. . . . . . . . . . . . . . . . . . . . . . . . . 49

External clock . . . . . . . . . . . . . . . . . . . . . . . . . 49

Internal oscillators. . . . . . . . . . . . . . . . . . . . . . 50

I/O pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

I²C-bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

I²S-bus interface (LPC1759/58/56 only). . . . . 53

SSP interface . . . . . . . . . . . . . . . . . . . . . . . . . 55

USB interface . . . . . . . . . . . . . . . . . . . . . . . . . 56

SPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

12.1

12.2

12.3

12.4

12.5

12.6

12.7

12.8

12.9

13

14

ADC electrical characteristics . . . . . . . . . . . . 59

DAC electrical characteristics

(LPC1759/58/56/54 only) . . . . . . . . . . . . . . . . . 62

15

15.1

15.2

Application information. . . . . . . . . . . . . . . . . . 63

Suggested USB interface solutions . . . . . . . . 63

Crystal oscillator XTAL input

and component selection . . . . . . . . . . . . . . . . 66

XTAL Printed-Circuit Board

15.3

(PCB) layout guidelines . . . . . . . . . . . . . . . . . 67

Standard I/O pin configuration . . . . . . . . . . . . 68

Reset pin configuration. . . . . . . . . . . . . . . . . . 69

ElectroMagnetic Compatibility (EMC). . . . . . . 70

15.4

15.5

15.6

16

17

18

19

Package outline . . . . . . . . . . . . . . . . . . . . . . . . 71

Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 73

Revision history. . . . . . . . . . . . . . . . . . . . . . . . 74

20

Legal information. . . . . . . . . . . . . . . . . . . . . . . 76

Data sheet status . . . . . . . . . . . . . . . . . . . . . . 76

Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 77

20.1

20.2

20.3

20.4

21

22

Contact information. . . . . . . . . . . . . . . . . . . . . 77

Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Please be aware that important notices concerning this document and the product(s)

described herein, have been included in section ‘Legal information’.

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: salesaddresses@nxp.com

Date of release: 4 April 2014

Document identifier: LPC1759_58_56_54_52_51


型号：	935287913551
厂家：	NXP
描述：	32-BIT, FLASH, 100MHz, RISC MICROCONTROLLER, PQFP80, 12 X 12 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT315-1, 80 PIN
文件：	总79页 (文件大小：797K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

935287913551 [NXP]

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