LPC2144 datasheet(7/45 Pages) NXP

Part #	LPC2144

Description	Single-chip 16-bit/32-bit ocontrollers; up to 512 kB flash with ISP/IAP, USB 2.0 full-speed device, 10-bit ADC and DAC

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Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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LPC2141_42_44_46_48

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Product data sheet

Rev. 5 — 12 August 2011

7 of 45

NXP Semiconductors

LPC2141/42/44/46/48

Single-chip 16-bit/32-bit microcontrollers

5.2 Pin description

Table 3.

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. Total of 31 pins of the Port 0 can be used as a general

purpose bidirectional digital I/Os while P0.31 is output only pin. The

operation of port 0 pins depends upon the pin function selected via the

pin connect block.

Pins P0.24, P0.26 and P0.27 are not available.

P0.0/TXD0/

PWM1

19[1]

I/O

P0.0 — General purpose input/output digital pin (GPIO).

O

TXD0 — Transmitter output for UART0.

O

PWM1 — Pulse Width Modulator output 1.

P0.1/RXD0/

PWM3/EINT0

21[2]

I/O

P0.1 — General purpose input/output digital pin (GPIO).

I

RXD0 — Receiver input for UART0.

O

PWM3 — Pulse Width Modulator output 3.

I

EINT0 — External interrupt 0 input.

P0.2/SCL0/

CAP0.0

22[3]

I/O

P0.2 — General purpose input/output digital pin (GPIO).

I/O

SCL0 — I2C0 clock input/output. Open-drain output (for I2C-bus

compliance).

I

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

P0.3/SDA0/

MAT0.0/EINT1

26[3]

I/O

P0.3 — General purpose input/output digital pin (GPIO).

I/O

SDA0 — I2C0 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/AD0.6

27[4]

I/O

P0.4 — General purpose input/output digital pin (GPIO).

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.

I

AD0.6 — ADC 0, input 6.

P0.5/MISO0/

MAT0.1/AD0.7

29[4]

I/O

P0.5 — General purpose input/output digital pin (GPIO).

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.

I

AD0.7 — ADC 0, input 7.

P0.6/MOSI0/

CAP0.2/AD1.0

30[4]

I/O

P0.6 — General purpose input/output digital pin (GPIO).

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.

I

AD1.0 — ADC 1, input 0. Available in LPC2144/46/48 only.

P0.7/SSEL0/

PWM2/EINT2

31[2]

I/O

P0.7 — General purpose input/output digital pin (GPIO).

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.

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