LPC2157_09 datasheet(3/45 Pages) NXP

Part #	LPC2157

Description	Single-chip 16-bit/32-bit microcontrollers; 512 kB flash, with 32 segment x 4 LCD driver

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Manufacturer	NXP [NXP Semiconductors]

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LPC2157_2158_2

Product data sheet

Rev. 02 — 9 February 2009

3 of 45

NXP Semiconductors

LPC2157/2158

Single-chip 16-bit/32-bit microcontrollers

(1) Pins shared with GPIO.

(2) USB DMA controller with 8 kB of RAM accessible as general purpose RAM and/or DMA is available in LPC2158 only.

(3) LPC2157 only.

Fig 2.

Microcontroller section block diagram

002aad384

system

clock

TRST(1)

TMS(1)

TCK(1)

TDI(1)

TDO(1)

XTAL2

XTAL1

AMBA AHB

(Advanced High-performance Bus)

INTERNAL

FLASH

CONTROLLER

AHB BRIDGE

TEST/DEBUG

INTERFACE

AHB

DECODER

AHB TO APB

BRIDGE

APB

DIVIDER

VECTORED

INTERRUPT

CONTROLLER

SYSTEM

FUNCTIONS

PLL0

USB

clock

PLL1

SYSTEM

CONTROL

512 kB

FLASH

ARM7TDMI-S

LPC2157/2158

INTERNAL

SRAM

CONTROLLER

32 kB

SRAM

ARM7 local bus

APB (advanced

peripheral bus)

SCL0, SCL1

SDA0, SDA1

4

× CAP0

4

× CAP1

8

× MAT0

8

× MAT1

I2C-BUS SERIAL

INTERFACES 0 AND 1

CAPTURE/COMPARE

(W/EXTERNAL CLOCK)

TIMER 0/TIMER 1

EINT3 to

EINT0

EXTERNAL

INTERRUPTS

D+

D

−

UP_LED

CONNECT

VBUS

USB 2.0 FULL-SPEED

DEVICE CONTROLLER

WITH DMA(2)

SCK0, SCK1

MOSI0, MOSI1

MISO0, MISO1

AD0[7:6],

AD0[5](3)

AD0[0](3)

AD0[4:1]

AD1[7:0]

SSEL0, SSEL1

SPI AND SSP

SERIAL INTERFACES

A/D CONVERTERS

0 AND 1

TXD0, TXD1

RXD0, RXD1

DSR1,CTS1,

RTS1, DTR1,

DCD1,RI1

AOUT

UART0/UART1

D/A CONVERTER

P0[31:28] and

P0[25:0]

P1[31:16]

RTCX2

RTCX1

V

BAT

REAL-TIME CLOCK

GENERAL

PURPOSE I/O

PWM[6:1]

WATCHDOG

TIMER

PWM0

P1[31:25],

P1[17:16]

P0[31:28],

P0[27:26](3)

P0[25],

P0[23:0]

FAST GENERAL

PURPOSE I/O

8 kB RAM

SHARED WITH

USB DMA(2)

RESET

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