Datasheet

LPC11D14 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 2 — 23 July 2012 39 of 47
NXP Semiconductors
LPC11D14
32-bit ARM Cortex-M0 microcontroller
order to keep the noise coupled in via the PCB as small as possible. Also parasitics
should stay as small as possible. Values of C
X1
and C
X2
should be chosen smaller
accordingly to the increase in parasitics of the PCB layout.
11.4 Standard I/O pad configuration
Figure 25 shows the possible pin modes for standard I/O pins with analog input function:
• Digital output driver
• Digital input: Pull-up enabled/disabled
• Digital input: Pull-down enabled/disabled
• Digital input: Repeater mode enabled/disabled
• Analog input
Fig 25. Standard I/O pad configuration
PIN
V
DD
V
DD
ESD
V
SS
ESD
strong
pull-up
strong
pull-down
V
DD
weak
pull-up
weak
pull-down
open-drain enable
output enable
repeater mode
enable
pull-up enable
pull-down enable
data output
data input
analog input
select analog input
002aah159
pin configured
as digital output
driver
pin configured
as digital input
pin configured
as analog input