LPC2194 datasheet(5/40 Pages) NXP

Part #	LPC2194

Description	Single-chip 16/32-bit microcontroller; 256 kB ISP/IAP flash with 10-bit ADC and CAN

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Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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LPC2194_5

Product data sheet

Rev. 05 — 10 December 2007

5 of 40

NXP Semiconductors

LPC2194

Single-chip 16/32-bit microcontroller

5.2 Pin description

Table 2.

Pin description

Symbol

Type Description

P0[0] to P0[31]

I/O

Port 0 is a 32-bit bidirectional 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. Pins 26 and 31 of port 0 are not available.

P0[0]/TXD0/

PWM1

19

O

TXD0 — Transmitter output for UART0.

O

PWM1 — Pulse Width Modulator output 1.

P0[1]/RXD0/

PWM3/EINT0

21

I

RXD0 — Receiver input for UART0.

O

PWM3 — Pulse Width Modulator output 3.

I

EINT0 — External interrupt 0 input.

P0[2]/SCL/

CAP0[0]

22

I/O

SCL — I2C-bus clock input/output. Open-drain output (for I2C-bus compliance).

I

CAP0[0] — Capture input for Timer 0, channel 0.

P0[3]/SDA/

MAT0[0]/EINT1

26

I/O

SDA — I2C-bus data input/output. Open-drain output (for I2C-bus compliance).

O

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

I

EINT1 — External interrupt 1 input.

P0[4]/SCK0/

CAP0[1]

27

I/O

SCK0 — Serial clock for SPI0. SPI clock output from master or input to slave.

I

CAP0[1] — Capture input for Timer 0, channel 1.

P0[5]/MISO0/

MAT0[1]

29

I/O

MISO0 — Master In Slave Out for SPI0. Data input to SPI master or data output

from SPI slave.

O

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

P0[6]/MOSI0/

CAP0[2]

30

I/O

MOSI0 — Master Out Slave In for SPI0. Data output from SPI master or data input

to SPI slave.

I

CAP0[2] — Capture input for Timer 0, channel 2.

P0[7]/SSEL0/

PWM2/EINT2

31

I

SSEL0 — Slave Select for SPI0. Selects the SPI interface as a slave.

O

PWM2 — Pulse Width Modulator output 2.

I

EINT2 — External interrupt 2 input.

P0[8]/TXD1/

PWM4

33

O

TXD1 — Transmitter output for UART1.

O

PWM4 — Pulse Width Modulator output 4.

P0[9]/RXD1/

PWM6/EINT3

34

I

RXD1 — Receiver input for UART1.

O

PWM6 — Pulse Width Modulator output 6.

I

EINT3 — External interrupt 3 input.

P0[10]/RTS1/

CAP1[0]

35

O

RTS1 — Request to Send output for UART1.

I

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

P0[11]/CTS1/

CAP1[1]

37

I

CTS1 — Clear to Send input for UART1.

I

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

P0[12]/DSR1/

MAT1[0]/RD4

38

I

DSR1 — Data Set Ready input for UART1.

O

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

O

RD4 — CAN4 receiver input.

P0[13]/DTR1/

MAT1[1]/TD4

39

O

DTR1 — Data Terminal Ready output for UART1.

O

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

O

TD4 — CAN4 transmitter output.

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