Datasheet

UM10398 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2014. All rights reserved.
User manual Rev. 12.3 — 10 June 2014 171 of 547
NXP Semiconductors
UM10398
Chapter 10: LPC111x Pin configuration (LPC1100L series, TSSOP, DIP,
Table 167. LPC1112 pin description table (TSSOP20 with V
DDA
and V
SSA
pins)
Symbol
Pin TSSOP20
Start
logic
input
Type Reset
state
[1]
Description
PIO0_0 to PIO0_11 I/O Port 0 — Port 0 is a 12-bit I/O port with individual direction
and function controls for each bit. The operation of port 0 pins
depends on the function selected through the IOCONFIG
register block.
RESET
/PIO0_0 17
[2]
yes I I; PU RESET — External reset input with 20 ns glitch filter. A
LOW-going pulse as short as 50 ns on this pin resets the
device, causing I/O ports and peripherals to take on their
default states, and processor execution to begin at address 0.
In deep power-down mode, this pin must be pulled HIGH
externally. The RESET
pin can be left unconnected or be
used as a GPIO pin if an external RESET function is not
needed.
I/O - PIO0_0 — General purpose digital input/output pin with 10 ns
glitch filter.
PIO0_1/CLKOUT/
CT32B0_MAT2
18
[3]
yes I/O I; PU PIO0_1 — General purpose digital input/output pin. A LOW
level on this pin during reset starts the ISP command handler.
O-CLKOUT — Clockout pin.
O-CT32B0_MAT2 — Match output 2 for 32-bit timer 0.
PIO0_2/SSEL0/
CT16B0_CAP0
19
[3]
yes I/O I; PU PIO0_2 — General purpose digital input/output pin.
I/O - SSEL0 — Slave Select for SPI0.
I-CT16B0_CAP0 — Capture input 0 for 16-bit timer 0.
PIO0_3 20
[3]
yes I/O I; PU PIO0_3 — General purpose digital input/output pin.
PIO0_8/MISO0/
CT16B0_MAT0
1
[3]
yes I/O I; PU PIO0_8 — General purpose digital input/output pin.
I/O - MISO0 — Master In Slave Out for SPI0.
O-CT16B0_MAT0 — Match output 0 for 16-bit timer 0.
PIO0_9/MOSI0/
CT16B0_MAT1
2
[3]
yes I/O I; PU PIO0_9 — General purpose digital input/output pin.
I/O - MOSI0 — Master Out Slave In for SPI0.
O-CT16B0_MAT1 — Match output 1 for 16-bit timer 0.
SWCLK/PIO0_10/
SCK0/
CT16B0_MAT2
3
[3]
yes I I; PU SWCLK — Serial wire clock.
I/O - PIO0_10 — General purpose digital input/output pin.
I/O - SCK0 — Serial clock for SPI0.
O-CT16B0_MAT2 — Match output 2 for 16-bit timer 0.
R/PIO0_11/
AD0/CT32B0_MAT3
4
[4]
yes I I; PU R — Reserved. Configure for an alternate function in the
IOCONFIG block.
I/O - PIO0_11 — General purpose digital input/output pin.
I-AD0 — A/D converter, input 0.
O-CT32B0_MAT3 — Match output 3 for 32-bit timer 0.
PIO1_0 to PIO1_7 I/O Port 1 — Port 1 is a 12-bit I/O port with individual direction
and function controls for each bit. The operation of port 1 pins
depends on the function selected through the IOCONFIG
register block.