LPC86X datasheet(10/99 Pages) NXP

10 / 99 page

LPC86x

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Product data sheet

Rev.3 — 28 April 2023

10 of 97

NXP Semiconductors

LPC86x

32-bit Arm Cortex-M0+ microcontroller

7.2 Pin description

The pin description table shows the pin functions that are fixed to specific pins on each

package. See Table 4. These fixed-pin functions are selectable through the switch matrix

between GPIO and the comparator, ADC, SWD, RESET, and the XTAL pins. By default,

the GPIO function is selected and is in a High-Z state except on pins PIO0_2, PIO0_3,

and PIO0_5. JTAG functions are available in boundary scan mode only.

Movable functions for the I2C, I3C, USART, SPI, and other peripherals can be assigned

through the switch matrix to any pin that is not powered or ground in place of the pin’s

fixed functions.

FlexTimer functions can be placed on a selection of up to 3 pins through the switch matrix.

The following exceptions apply:

Do not assign more than one output to any pin. However, an output and/or one or more

inputs can be assigned to a pin. Once any function is assigned to a pin, the pin’s GPIO

functionality is disabled.

Pin PIO0_4 triggers a wake-up from deep power-down mode. If the part must wake up

from deep power-down mode via an external pin, do not assign any movable function to

this pin.

Fig 6.

Pin configuration HVQFN32 package

aaa-026595

Transparent top view

PIO0_9/XTALOUT

SWDIO/PIO0_2/TMS

PIO0_11

PIO0_8/XTALIN

SWCLK/PIO0_3/TCK

VDD

PIO0_28/WKTCLKIN

VREFN

PIO0_4/ADC_11/TRST/WAKEUP

VREFP

PIO0_5/RESET

PIO0_7/ADC_0

PIO0_12

PIO0_6/ADC_1/ACMPVREF

PIO0_13/ADC_10

PIO0_0/ACMP_I1/TDO

terminal 1

index area

33 VSS

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