LPC2194 datasheet(3/40 Pages) NXP

3 / 40 page

LPC2194_5

Product data sheet

Rev. 05 — 10 December 2007

3 of 40

NXP Semiconductors

LPC2194

Single-chip 16/32-bit microcontroller

Block diagram

(1) Shared with GPIO.

(2) When test/debug interface is used, GPIO/other functions sharing these pins are not available.

(3) SSP interface and high-speed GPIO are available on LPC2194/01 only.

Fig 1.

Block diagram

SCL(1)

P0[30:27],

P0[25:0]

TRST(2)

TMS(2)

TCK(2)

TDI(2)

TDO(2)

XTAL2

XTAL1

EINT[3:0](1)

AIN[3:0](1)

AHB BRIDGE

PLL

PWM0

ARM7TDMI-S

LPC2194

RESET

× CAP0(1)

× CAP1(1)

× MAT0(1)

TD[4:1](1)

RD[4:1](1)

× MAT1(1)

P1[31:16]

SDA(1)

DSR1(1), CTS1(1),

RTS1(1), DTR1(1),

DCD1(1), RI1(1)

RTCK

ARM7 LOCAL BUS

INTERNAL

SRAM

CONTROLLER

INTERNAL

FLASH

CONTROLLER

16 kB

SRAM

256 kB

FLASH

EXTERNAL

INTERRUPTS

CAPTURE/

COMPARE

TIMER 0/TIMER 1

A/D CONVERTER

GENERAL

PURPOSE I/O

CAN INTERFACE 1, 2, 3 AND 4

ACCEPTANCE FILTERS

TEST/DEBUG

INTERFACE

AMBA Advanced High-performance

Bus (AHB)

system

clock

SYSTEM

FUNCTIONS

VECTORED

INTERRUPT

CONTROLLER

AHB

DECODER

I2C-BUS SERIAL

INTERFACE

AHB TO APB

BRIDGE

APB

DIVIDER

SPI0 SERIAL

INTERFACE

UART0/UART1

WATCHDOG

TIMER

SYSTEM

CONTROL

REAL-TIME CLOCK

002aad178

VDD(3V3)

VSS

VDD(1V8)

PWM[6:1](1)

SCK0(1)

MOSI0(1)

MISO0(1)

SSEL0(1)

SPI1/SSP(3) SERIAL

INTERFACE

SCK1(1)

MOSI1(1)

MISO1(1)

SSEL1(1)

RXD[1:0](1)

TXD[1:0](1)

P0[30:27],

P0[25:0]

P1[31:16]

HIGH-SPEED

GPI/O(3)

46 PINS TOTAL

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