LPC2141_42_44_46_48 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 5 — 12 August 2011 8 of 45
NXP Semiconductors
LPC2141/42/44/46/48
Single-chip 16-bit/32-bit microcontrollers
P0.8/TXD1/
PWM4/AD1.1
33
[4]
I/O P0.8 — General purpose input/output digital pin (GPIO).
O TXD1 — Transmitter output for UART1.
O PWM4 — Pulse Width Modulator output 4.
I AD1.1 — ADC 1, input 1. Available in LPC2144/46/48 only.
P0.9/RXD1/
PWM6/EINT3
34
[2]
I/O P0.9 — General purpose input/output digital pin (GPIO).
I RXD1 — Receiver input for UART1.
O PWM6 — Pulse Width Modulator output 6.
I EINT3 — External interrupt 3 input.
P0.10/RTS1/
CAP1.0/AD1.2
35
[4]
I/O P0.10 — General purpose input/output digital pin (GPIO).
O RTS1 — Request to Send output for UART1. LPC2144/46/48 only.
I CAP1.0 — Capture input for Timer 1, channel 0.
I AD1.2 — ADC 1, input 2. Available in LPC2144/46/48 only.
P0.11/CTS1/
CAP1.1/SCL1
37
[3]
I/O P0.11 — General purpose input/output digital pin (GPIO).
I CTS1 — Clear to Send input for UART1. Available in LPC2144/46/48
only.
I CAP1.1 — Capture input for Timer 1, channel 1.
I/O SCL1 — I
2
C1 clock input/output. Open-drain output (for I
2
C-bus
compliance)
P0.12/DSR1/
MAT1.0/AD1.3
38
[4]
I/O P0.12 — General purpose input/output digital pin (GPIO).
I DSR1 — Data Set Ready input for UART1. Available in
LPC2144/46/48 only.
O MAT1.0 — Match output for Timer 1, channel 0.
I AD1.3 — ADC 1 input 3. Available in LPC2144/46/48 only.
P0.13/DTR1/
MAT1.1/AD1.4
39
[4]
I/O P0.13 — General purpose input/output digital pin (GPIO).
O DTR1 — Data Terminal Ready output for UART1. LPC2144/46/48
only.
O MAT1.1 — Match output for Timer 1, channel 1.
I AD1.4 — ADC 1 input 4. Available in LPC2144/46/48 only.
P0.14/DCD1/
EINT1/SDA1
41
[3]
I/O P0.14 — General purpose input/output digital pin (GPIO).
I DCD1 — Data Carrier Detect input for UART1. LPC2144/46/48 only.
I EINT1 — External interrupt 1 input.
I/O SDA1 — I
2
C1 data input/output. Open-drain output (for I
2
C-bus
compliance).
Note: LOW on this pin while RESET
is LOW forces on-chip boot
loader to take over control of the part after reset.
P0.15/RI1/
EINT2/AD1.5
45
[4]
I/O P0.15 — General purpose input/output digital pin (GPIO).
I RI1 — Ring Indicator input for UART1. Available in LPC2144/46/48
only.
I EINT2 — External interrupt 2 input.
I AD1.5 — ADC 1, input 5. Available in LPC2144/46/48 only.
Table 3. Pin description
…continued
Symbol Pin Type Description
(24 paginas)
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