I have been looking at the schematic for the Arduino etherten board. I was wondering if these pins can be used or, if they are already being used. These pins are located near the SD card slot.

Pin A6 and A7

cmiyc March 9, 2013, 3:38am 13

A6 and A7 are 100% analog only pins and they are only available onboards with the surface mount version of the ATmega328.

Don't try to treat them as digital inputs.

Topic		Replies	Views
HELP : ATMega328P_AU - Using A6 & A7 as DIGITAL pins Microcontrollers	6	2422	May 6, 2021
Can Arduino FIO Analog pins A6 and A7 be used as digital input? Microcontrollers	3	4981	May 6, 2021
Using analog pins for outputs Programming Questions	6	1175	May 5, 2021
digital input pins Programming Questions	5	950	May 5, 2021
Analog A6 , A7 on Arduino Uno Project Guidance	4	3122	May 5, 2021