ATMEGA328P-PU Atmel 8 Bit 32K AVR Microcontroller - Protostack
ATMega328P Microcontroller Pinout, Pin Configuration, Features & Datasheet
ATmega328P - 8-bit AVR Microcontrollers
AVR ISP Bootloader Shield Burning Programmer for Atmega328P Bootloader module with buzzer and LED indicator for Arduino UNO R3|module led|module for arduinoprogrammer isp - AliExpress
Configuring ATmega328p to use external crystal as clock source | xanthium enterprises