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. -
The Full Arduino Uno Pinout Guide [including diagram]
Arduino nano pinout and complete tutorial with schematics - solderingmind
Arduino Uno Pin Diagram, Specifications, Pin Configuration & Programming
Arduino how to Use sda and scl pin(20 and 21) as gpio pins - Stack Overflow