Target Analogue I/O

The ATmega168PB ADC input pins are available in the J203 header.

AREF is available in J200 pin 8.

Table 1. J203 Analogue Header
J203 Pin ATmega168PB Pin Function
1 PC0 ADC Input Channel 0
2 PC1 ADC Input Channel 1
3 PC2 ADC Input Channel 2
4 PC3 ADC Input Channel 3
5 PC4 ADC Input Channel 4
6 PC5 ADC Input Channel 5