【Atmel】ATMEGA644P-20AU,IC MCU AVR 64K FLASH 44-TQFP
【Atmel】ATMEGA644P-20AUR,MCU AVR 64K FLASH 20MHZ 44TQFP
【Atmel】ATMEGA644P-20MQ,MCU AVR 64K FLASH 20MHZ 44-QFN
【Atmel】ATMEGA644P-20MQR,MCU AVR 64K FLASH 20MHZ 44QFN
【Atmel】ATMEGA644P-20MU,IC MCU AVR 64K FLASH 44-QFN
【Atmel】ATMEGA644P-20MUR,MCU AVR 64K FLASH 20MHZ 44QFN
【Atmel】ATMEGA644P-20PQ,MCU AVR 64K FLASH 20MHZ 40-PDIP
【Atmel】ATMEGA644P-20PU,IC MCU AVR 64K FLASH 40-DIP