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ATmega644PA 8-bit AVR® Microcontrollers

Microchip ATmega644PA 8-bit AVR^® CMOS Microcontrollers are low-power and based on the AVR^® enhanced RISC architecture. The Atmel ATmega644PA is a powerful 8-bit microcontroller, that offers excellent flexibility and a cost-effective solution to a wide range of embedded control applications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package/Case	Core	Data Bus Width	Maximum Clock Frequency	Program Memory Size	Data RAM Size	ADC Resolution	Number of I/Os	Supply Voltage - Min	Supply Voltage - Max	Maximum Operating Temperature	Packaging
8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE 20MHZ 5V ATMEGA644P-20AU Microchip Technology 1: 6,06 € 1 120On Order	Mfr. Part No. ATMEGA644P-20AU Mouser Part No 556-ATMEGA644P-20AU	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE 20MHZ 5V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	1 120On Order On Order Ship Dates Mfr. No: ATMEGA644P-20AU Stock: 0 On Order: 480 Expected 12/11/2026 640 Expected 1/28/2027 Factory Lead Time: 20 Weeks	6,06 € 5,56 € 5,02 €	Min.: 1 Mult.: 1	SMD/SMT	TQFP-44	AVR	8 bit	20 MHz	64 kB	4 kB	10 bit	32 I/O	2.7 V	5.5 V	+ 85 C	Tray
8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE-20MHZ IND,5V ATMEGA644P-20AUR Microchip Technology 1: 6,18 € 1 999Expected 3/15/2027	Mfr. Part No. ATMEGA644P-20AUR Mouser Part No 556-ATMEGA644P-20AUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE-20MHZ IND,5V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	1 999Expected 3/15/2027	Cut Tape 6,18 € 6,02 € Reel 5,14 € MouseReel Available	Min.: 1 Mult.: 1 : 2 000	SMD/SMT	TQFP-44	AVR	8 bit	20 MHz	64 kB	4 kB	10 bit	32 I/O	2.7 V	5.5 V	+ 85 C	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC-10MHZ ATMEGA644PV-10AU Microchip Technology 1: 6,06 € 638On Order	Mfr. Part No. ATMEGA644PV-10AU Mouser Part No 556-ATMEGA644PV10AU	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC-10MHZ Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	638On Order On Order Ship Dates Mfr. No: ATMEGA644PV-10AU Stock: 0 On Order: 158 Expected 11/2/2026 480 Expected 11/25/2027 Factory Lead Time: 20 Weeks	6,06 € 5,56 € 5,02 €	Min.: 1 Mult.: 1	SMD/SMT	TQFP-44	AVR	8 bit	10 MHz	64 kB	4 kB	10 bit	32 I/O	1.8 V	5.5 V	+ 85 C	Tray
8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE - 20MHZ 5V ATMEGA644-20MU Microchip Technology 360: 4,91 € Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. ATMEGA644-20MU Mouser Part No 556-ATMEGA644-20MU	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE - 20MHZ 5V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	4,91 €	Min.: 360 Mult.: 360	SMD/SMT	MLF-44	AVR	8 bit	20 MHz	64 kB	4 kB	10 bit	32 I/O	2.7 V	5.5 V	+ 85 C	Tray
8-bit Microcontrollers - MCU 20 MHz Ind Temp ATMEGA644A-MUR Microchip Technology 4 000: 4,05 € Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. ATMEGA644A-MUR Mouser Part No 556-ATMEGA644A-MUR	Microchip Technology	8-bit Microcontrollers - MCU 20 MHz Ind Temp Learn More about Microchip Technology microchip megaavr 8 bit mcus	Datasheet	Non-Stocked Lead-Time 8 Weeks	Reel 4,05 €	Min.: 4 000 Mult.: 4 000 : 4 000	SMD/SMT	VQFN-44	AVR	8 bit	20 MHz					1.8 V	5.5 V		Reel
8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE-20MHZ IND,5V ATMEGA644P-20AQR Microchip Technology 2 000: 5,25 € Non-Stocked Lead-Time 11 Weeks	Mfr. Part No. ATMEGA644P-20AQR Mouser Part No 556-ATMEGA644P-20AQR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE-20MHZ IND,5V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 11 Weeks	Reel 5,25 €	Min.: 2 000 Mult.: 2 000 : 2 000	SMD/SMT	TQFP-44	AVR	8 bit	20 MHz					2.7 V	5.5 V		Reel
8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE 20MHZ 5V ATMEGA644P-20MQ Microchip Technology 360: 5,14 € Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. ATMEGA644P-20MQ Mouser Part No 556-ATMEGA644P-20MQ	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE 20MHZ 5V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	5,14 €	Min.: 360 Mult.: 360	SMD/SMT	VQFN-44	AVR	8 bit	20 MHz	64 kB	4 kB		32 I/O	2.7 V	5.5 V	+ 85 C	Tray
8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE-20MHz EXT,5V ATMEGA644P-20MQR Microchip Technology 4 000: 5,25 € Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. ATMEGA644P-20MQR Mouser Part No 556-ATMEGA644P-20MQR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE-20MHz EXT,5V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel 5,25 €	Min.: 4 000 Mult.: 4 000 : 4 000	SMD/SMT	VQFN-44	AVR	8 bit	20 MHz					2.7 V	5.5 V		Reel
8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE-20MHZ IND,5V ATMEGA644P-20MUR Microchip Technology 4 000: 5,14 € Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. ATMEGA644P-20MUR Mouser Part No 556-ATMEGA644P-20MUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE-20MHZ IND,5V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel 5,14 €	Min.: 4 000 Mult.: 4 000 : 4 000	SMD/SMT	VQFN-44	AVR	8 bit	20 MHz					2.7 V	5.5 V		Reel
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB RAM-16MHz 105C ATMEGA644PA-MNR Microchip Technology 4 000: 4,91 € Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. ATMEGA644PA-MNR Mouser Part No 556-ATMEGA644PA-MNR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB RAM-16MHz 105C Learn More about Microchip Technology microchip megaavr 8 bit mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel 4,91 €	Min.: 4 000 Mult.: 4 000 : 4 000	SMD/SMT	VQFN-44	AVR	8 bit	20 MHz					1.8 V	5.5 V		Reel
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB RAM-20MHz IND ATMEGA644PA-MUR Microchip Technology 4 000: 4,68 € Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. ATMEGA644PA-MUR Mouser Part No 556-ATMEGA644PA-MUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB RAM-20MHz IND Learn More about Microchip Technology microchip megaavr 8 bit mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel 4,68 €	Min.: 4 000 Mult.: 4 000 : 4 000	SMD/SMT	VQFN-44	AVR	8 bit	20 MHz					1.8 V	5.5 V		Reel
8-bit Microcontrollers - MCU AVR 64KB, 2KB EE 10MHz 4KB SRAM, 1.8V ATMEGA644PV-10MQ Microchip Technology 360: 5,14 € Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. ATMEGA644PV-10MQ Mouser Part No 556-ATMEGA644PV-10MQ	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB, 2KB EE 10MHz 4KB SRAM, 1.8V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	5,14 €	Min.: 360 Mult.: 360	SMD/SMT	VQFN-44	AVR	8 bit	10 MHz	64 kB	4 kB		32 I/O	1.8 V	5.5 V	+ 85 C	Tray
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-10MHz, 1.8V ATMEGA644PV-10MQR Microchip Technology 4 000: 5,25 € Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. ATMEGA644PV-10MQR Mouser Part No 556-ATMEGA644PV10MQR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-10MHz, 1.8V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel 5,25 €	Min.: 4 000 Mult.: 4 000 : 4 000	SMD/SMT	VQFN-44	AVR	8 bit	10 MHz					1.8 V	5.5 V		Reel
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-10MHz, 1.8V ATMEGA644PV-10MUR Microchip Technology 4 000: 5,14 € Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. ATMEGA644PV-10MUR Mouser Part No 556-ATMEGA644PV10MUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-10MHz, 1.8V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 8 Weeks	Reel 5,14 €	Min.: 4 000 Mult.: 4 000 : 4 000	SMD/SMT	VQFN-44	AVR	8 bit	10 MHz					1.8 V	5.5 V		Reel
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-10MHz, 1.8V ATMEGA644V-10MUR Microchip Technology 4 000: 5,00 € Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. ATMEGA644V-10MUR Mouser Part No 556-ATMEGA644V-10MUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-10MHz, 1.8V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel 5,00 €	Min.: 4 000 Mult.: 4 000 : 4 000	SMD/SMT	VQFN-44	AVR	8 bit	10 MHz					1.8 V	5.5 V		Reel
8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC-10MHZ ATMEGA644V-10MU Microchip Technology 360: 4,91 € Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. ATMEGA644V-10MU Mouser Part No 556-ATMEGA644V10MU	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC-10MHZ Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 8 Weeks	4,91 €	Min.: 360 Mult.: 360	SMD/SMT	MLF-44	AVR	8 bit	10 MHz	64 kB	4 kB	10 bit	32 I/O	1.8 V	5.5 V	+ 85 C	Tray
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND ATMEGA645A-MU Microchip Technology 260: 4,56 € Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. ATMEGA645A-MU Mouser Part No 556-ATMEGA645A-MU	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	4,56 €	Min.: 260 Mult.: 260	SMD/SMT	VQFN-64	AVR	8 bit	16 MHz	64 kB	4 kB	10 bit	54 I/O	1.8 V	5.5 V	+ 85 C	Tray
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-8MHz, IND ATMEGA645V-8MUR Microchip Technology 4 000: 5,74 € Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. ATMEGA645V-8MUR Mouser Part No 556-ATMEGA645V-8MUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-8MHz, IND Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel 5,74 €	Min.: 4 000 Mult.: 4 000 : 4 000	SMD/SMT	VQFN-64	AVR	8 bit	8 MHz					1.8 V	5.5 V		Reel
8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC 1.8V ATMEGA645V-8MU Microchip Technology 260: 5,61 € Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. ATMEGA645V-8MU Mouser Part No 556-ATMEGA645V8MU	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC 1.8V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	5,61 €	Min.: 260 Mult.: 260	SMD/SMT	MLF-64	AVR	8 bit	8 MHz	64 kB	4 kB	10 bit	54 I/O	1.8 V	5.5 V	+ 85 C	Tray
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM LCD16MHz,5V ATMEGA649-16MUR Microchip Technology 4 000: 6,97 € Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. ATMEGA649-16MUR Mouser Part No 556-ATMEGA649-16MUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM LCD16MHz,5V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 8 Weeks	Reel 6,97 €	Min.: 4 000 Mult.: 4 000 : 4 000	SMD/SMT	VQFN-64	AVR	8 bit	16 MHz					2.7 V	5.5 V		Reel
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM LCD16MHz,5V ATMEGA6490-16AUR Microchip Technology 1 500: 7,98 € Non-Stocked Lead-Time 9 Weeks	Mfr. Part No. ATMEGA6490-16AUR Mouser Part No 556-ATMEGA6490-16AUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM LCD16MHz,5V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 9 Weeks	Reel 7,98 €	Min.: 1 500 Mult.: 1 500 : 1 500	SMD/SMT	TQFP-100	AVR	8 bit	16 MHz					2.7 V	5.5 V		Reel
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND ATMEGA649A-MUR Microchip Technology 4 000: 5,15 € Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. ATMEGA649A-MUR Mouser Part No 556-ATMEGA649A-MUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel 5,15 €	Min.: 4 000 Mult.: 4 000 : 4 000	SMD/SMT	VQFN-64	AVR	8 bit	16 MHz					1.8 V	5.5 V		Reel
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM LCD-16MHz ATMEGA649P-MUR Microchip Technology 4 000: 5,61 € Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. ATMEGA649P-MUR Mouser Part No 556-ATMEGA649P-MUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM LCD-16MHz Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel 5,61 €	Min.: 4 000 Mult.: 4 000 : 4 000	SMD/SMT	VQFN-64	AVR	8 bit									Reel
8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC LCD ATMEGA649V-8AU Microchip Technology 90: 6,84 € Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. ATMEGA649V-8AU Mouser Part No 556-ATMEGA649V8AU	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC LCD Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 12 Weeks	6,84 €	Min.: 90 Mult.: 90	SMD/SMT	TQFP-64	AVR	8 bit	8 MHz	64 kB	4 kB	10 bit	54 I/O	2.7 V	5.5 V	+ 85 C	Tray
8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC LCD ATMEGA649V-8MU Microchip Technology 260: 6,84 € Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. ATMEGA649V-8MU Mouser Part No 556-ATMEGA649V8MU	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC LCD Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	Non-Stocked Lead-Time 8 Weeks	6,84 €	Min.: 260 Mult.: 260	SMD/SMT	MLF-64	AVR	8 bit	8 MHz	64 kB	4 kB		54 I/O	1.8 V	5.5 V	+ 85 C	Tray

ATmega644PA 8-bit AVR® Microcontrollers

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