Datasheets & Reference Manuals Arduino Arduino Uno Pinout Arduino Uno Schematic Oscilloscopes Analog Discovery 2 DSO Nano V3 Oscilloscope AVR ATmega328P Datasheet ATmega8U2/16U2/32U2 Datasheet AVR Instruction Set Manual AVR-Libc Reference Manual (standard C library for AVR-GCC) AVRDUDE Reference Manual