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 133 of 547
NXP Semiconductors
UM10398
Chapter 8: LPC1100XL series: I/O configuration (IOCONFIG)
8.4.36 IOCON_PIO1_4
8.4.37 IOCON_PIO1_11
Table 141. IOCON_PIO1_4 register (IOCON_PIO1_4, address 0x4004 4094) bit description
Bit Symbol Value Description Reset
value
2:0 FUNC Selects pin function. This pin functions as WAKEUP pin if the
LPC111x/LPC11Cxx is in Deep power-down mode regardless
of the value of FUNC. All other values are reserved.
000
0x0 Selects function PIO1_4.
0x1 Selects function AD5.
0x2 Selects function CT32B1_MAT3.
4:3 MODE Selects function mode (on-chip pull-up/pull-down resistor
control).
10
0x0 Inactive (no pull-down/pull-up resistor enabled).
0x1 Pull-down resistor enabled.
0x2 Pull-up resistor enabled.
0x3 Repeater mode.
5 HYS Hysteresis. 0
0 Disable.
1 Enable.
6 - - Reserved 1
7 ADMODE Selects Analog/Digital mode 1
0 Analog input mode
1 Digital functional mode
9:8 - - Reserved 00
10 OD Selects pseudo open-drain mode. 0
0 Standard GPIO output
1 Open-drain output
31:11 - - Reserved -
Table 142. IOCON_PIO1_11 register (IOCON_PIO1_11, address 0x4004 4098) bit description
Bit Symbol Value Description Reset
value
2:0 FUNC Selects pin function. All other values are reserved. 000
0x0 Selects function PIO1_11.
0x1 Selects function AD7.
0x2 Selects function CT32B1_CAP1.
4:3 MODE Selects function mode (on-chip pull-up/pull-down resistor
control).
10
0x0 Inactive (no pull-down/pull-up resistor enabled).
0x1 Pull-down resistor enabled.
0x2 Pull-up resistor enabled.
0x3 Repeater mode.