NXP Semiconductors LPC11U3x

UM10462 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved.
User manual Rev. 5.5 — 21 December 2016 119 of 523
NXP Semiconductors
UM10462
Chapter 7: LPC11U3x/2x/1x I/O configuration
7.4.1.44 PIO1_19 register
10 OD Open-drain mode. 0
0 Disable.
1 Open-drain mode enabled. This is not a true open-drain
mode. Input cannot be pulled up above VDD.
31:11 RESERVED Reserved. 0
Table 118. PIO1_18 register (PIO1_18, address 0x4004 40A8) bit description
…continued
Bit Symbol Value Description Reset
value
Table 119. PIO1_19 register (PIO1_19, address 0x4004 40AC) bit description
Bit Symbol Value Description Reset
value
2:0 FUNC Selects pin function. Values 0x3 to 0x7 are reserved. 000
0x0 PIO1_19.
0x1 DTR
.
0x2 SSEL1.
4:3 MODE 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 INV Invert input 0
0 Input not inverted (HIGH on pin reads as 1, LOW on pin reads
as 0).
1 Input inverted (HIGH on pin reads as 0, LOW on pin reads as
1).
9:7 - - Reserved. 001
10 OD Open-drain mode. 0
0 Disable.
1 Open-drain mode enabled.
Remark: This is not a true open-drain mode.
31:11 - - Reserved. 0