nRF52840 ADC Pin Mappings

I find myself struggling to remember the Analog to Digital converter PIN mappings on the nRF52840.

To help, I created this simple table. This is for the aQFN73 variant, which comes on the Seeed XIAO nRF52840 I use the most.

ADC	PIN	Name
AIN0	A12	P0.02
AIN1	B13	P0.03
AIN2	J1	P0.04
AIN3	K2	P0.05
AIN4	B11	P0.28
AIN5	A10	P0.29
AIN6	B9	P0.30
AIN7	A8	P0.31

You can find all the pin mappings on the Nordic Semiconductors’ website:

https://docs.nordicsemi.com/bundle/ps_nrf52840/page/pin.html

Hopefully this will serve as a useful reference!