Original ATMEGA 328 328P PU CHIP ATMEGA328 Microcontroller DIP-28 ATMEGA328P-PU ATMEGA328-PU CHIP ATMEGA328 Microcontroller MCU AVR 32K 20MHz FLASH DIP-28, Microcontroller MCU AVR 32K 20MHz FLASH DIP-28 Package included : 1 X ATMEGA328