Pin configuration of ATmega328P chip | Download Scientific Diagram
Powering an Atmega328p through the USB VBus pin on a hobby PCB I'm making. Is it safe? What protections should I add?: a fuse? Polarity protection? : r/AskElectronics
Pin Configuration and IO Multiplexing : Arduino / ATmega328p - Arnab Kumar Das
Atmega328p Low Power 8 Bit Atmel Microcontroller - Datasheet and Pinout - NetSonic