Datasheet

LPC2101_02_03_4 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 04 — 2 June 2009 7 of 37
NXP Semiconductors
LPC2101/02/03
Single-chip 16-bit/32-bit microcontrollers
P0.11/CTS1/
CAP1.1/AD0.4
36
[3]
I/O P0.11 — General purpose input/output digital pin.
I CTS1 — Clear to Send input for UART1.
I CAP1.1 — Capture input for Timer 1, channel 1.
I AD0.4 — ADC 0, input 4.
P0.12/DSR1/
MAT1.0/AD0.5
37
[3]
I/O P0.12 — General purpose input/output digital pin.
I DSR1 — Data Set Ready input for UART1.
O MAT1.0 — PWM output for Timer 1, channel 0.
I AD0.5 — ADC 0, input 5.
P0.13/DTR1/
MAT1.1
41
[1]
I/O P0.13 — General purpose input/output digital pin.
O DTR1 — Data Terminal Ready output for UART1.
O MAT1.1 — PWM output for Timer 1, channel 1.
P0.14/DCD1/
SCK1/EINT1
44
[4][5]
I/O P0.14 — General purpose input/output digital pin.
I DCD1 — Data Carrier Detect input for UART1.
I/O SCK1 — Serial Clock for SPI1. SPI clock output from master or input to slave.
I EINT1 — External interrupt 1 input.
P0.15/RI1/
EINT2
45
[4]
I/O P0.15 — General purpose input/output digital pin.
I RI1 — Ring Indicator input for UART1.
I EINT2 — External interrupt 2 input.
P0.16/EINT0/
MAT0.2
46
[4]
I/O P0.16 — General purpose input/output digital pin.
I EINT0 — External interrupt 0 input.
O MAT0.2 — PWM output for Timer 0, channel 2.
P0.17/CAP1.2/
SCL1
47
[6]
I/O P0.17 — General purpose input/output digital pin. The output is not
open-drain.
I CAP1.2 — Capture input for Timer 1, channel 2.
I/O SCL1 — I
2
C1 clock Input/output. This pin is an open-drain output if I
2
C1
function is selected in the pin connect block.
P0.18/CAP1.3/
SDA1
48
[6]
I/O P0.18 — General purpose input/output digital pin. The output is not
open-drain.
I CAP1.3 — Capture input for Timer 1, channel 3.
I/O SDA1 — I
2
C1 data Input/output. This pin is an open-drain output if I
2
C1
function is selected in the pin connect block.
P0.19/MAT1.2/
MISO1
1
[1]
I/O P0.19 — General purpose input/output digital pin.
O MAT1.2 — PWM output for Timer 1, channel 2.
I/O MISO1 — Master In Slave Out for SSP. Data input to SSP master or data
output from SSP slave.
P0.20/MAT1.3/
MOSI1
2
[1]
I/O P0.20 — General purpose input/output digital pin.
O MAT1.3 — PWM output for Timer 1, channel 3.
I/O MOSI1 — Master Out Slave for SSP. Data output from SSP master or data
input to SSP slave.
P0.21/SSEL1/
MAT3.0
3
[1]
I/O P0.21 — General purpose input/output digital pin.
I SSEL1 — Slave Select for SPI1. Selects the SPI interface as a slave.
O MAT3.0 — PWM output for Timer 3, channel 0.
Table 3. Pin description
…continued
Symbol Pin Type Description