LPC2157 datasheet(11/45 Pages) NXP

11 / 45 page

LPC2157_2158_2

Product data sheet

Rev. 02 — 9 February 2009

11 of 45

NXP Semiconductors

LPC2157/2158

Single-chip 16-bit/32-bit microcontrollers

P0[9]/RXD1/

PWM6/EINT3

21[2]

I/O

P0[9] — General purpose input/output digital pin (GPIO).

RXD1 — Receiver input for UART1.

PWM6 — Pulse Width Modulator output 6.

EINT3 — External interrupt 3 input.

P0[10]/RTS1/

CAP1[0]/AD1[2]

22[4]

I/O

P0[10] — General purpose input/output digital pin (GPIO).

RTS1 — Request to Send output for UART1.

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

AD1[2] — ADC 1, input 2.

P0[11]/CTS1/

CAP1[1]/SCL1

23[3]

I/O

P0[11] — General purpose input/output digital pin (GPIO).

CTS1 — Clear to Send input for UART1.

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

I/O

SCL1 — I2C1 clock input/output. Open-drain output (for I2C-bus compliance)

P0[12]/DSR1/

MAT1[0]/AD1[3]

24[4]

I/O

P0[12] — General purpose input/output digital pin (GPIO).

DSR1 — Data Set Ready input for UART1.

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

AD1[3] — ADC 1 input 3.

P0[13]/DTR1/

MAT1[1]/AD1[4]

25[4]

I/O

P0[13] — General purpose input/output digital pin (GPIO).

DTR1 — Data Terminal Ready output for UART1.

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

AD1[4] — ADC 1 input 4.

P0[14]/DCD1/

EINT1/SDA1

26[3]

I/O

P0[14] — General purpose input/output digital pin (GPIO).

DCD1 — Data Carrier Detect input for UART1.

EINT1 — External interrupt 1 input.

I/O

SDA1 — I2C1 data input/output. Open-drain output (for I2C-bus compliance).

Note: LOW on this pin while RESET is LOW forces on-chip bootloader to take

over control of the part after reset.

P0[15]/RI1/

EINT2/AD1[5]

28[4]

I/O

P0[15] — General purpose input/output digital pin (GPIO).

RI1 — Ring Indicator input for UART1.

EINT2 — External interrupt 2 input.

AD1[5] — ADC 1, input 5.

P0[16]/EINT0/

MAT0[2]/CAP0[2]

29[2]

I/O

P0[16] — General purpose input/output digital pin (GPIO).

EINT0 — External interrupt 0 input.

MAT0[2] — Match output for Timer 0, channel 2.

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

P0[17]/CAP1[2]/

SCK1/MAT1[2]

30[1]

I/O

P0[17] — General purpose input/output digital pin (GPIO).

CAP1[2] — Capture input for Timer 1, channel 2.

I/O

SCK1 — Serial Clock for SSP. Clock output from master or input to slave.

MAT1[2] — Match output for Timer 1, channel 2.

Table 3.

Pin description LPC2158 …continued

Symbol

Type

Description

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