Pin Configuration and IO Multiplexing : Arduino / ATmega328p - Arnab Kumar Das
atmega328p - Arduino/Atmega328: check if PIN is shorted to GND - Electrical Engineering Stack Exchange
ATmega328P-U with Arduino Bootloader — Maker Portal
What is the pin names mapping from Arduino to the actual AVR pin mapping? I need to use the board for pure AVR programming. The Arduino board uses an ATmega328P-PU chip. -
Introduction to ATmega328p Pinout, datasheet and specifications
ATMEGA328P Pinout, Programming, Features, and Applications