LPC1111 datasheet(53/64 Pages) NXP

53 / 64 page

LPC1111_12_13_14

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Product data sheet

Rev. 5 — 22 June 2011

53 of 64

NXP Semiconductors

LPC1111/12/13/14

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 Cx1 and Cx2 should be chosen smaller

accordingly to the increase in parasitics of the PCB layout.

11.4 Standard I/O pad configuration

Figure 31 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 31. Standard I/O pad configuration

VDD

ESD

VSS

ESD

VDD

weak

pull-up

weak

pull-down

output enable

repeater mode

enable

output

pull-up enable

pull-down enable

data input

analog input

select analog input

002aaf304

pin configured

as digital output

driver

pin configured

as digital input

pin configured

as analog input

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