Understanding delay for I/O: Using Arduino functions vs. coding the MCU
Pin Configuration and IO Multiplexing : Arduino / ATmega328p - Arnab Kumar Das
File:Pinout of ARDUINO Board and ATMega328PU.svg - Wikimedia Commons
ATmega328 pin mapping with the Arduino Uno board. | Download Scientific Diagram
Embedded System | ShareTechnote
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. -