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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 16 MHz, 85DEG ATMEGA64M1-AU Microchip Technology 1: €5.93 26,144In Stock	Mfr. Part No. ATMEGA64M1-AU Mouser Part No 556-ATMEGA64M1-AU	Microchip Technology	8-bit Microcontrollers - MCU 16 MHz, 85DEG Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	26,144In Stock	€5.93 €5.38 €4.94 €4.91	Min.: 1 Mult.: 1	SMD/SMT	TQFP-32	AVR	8 bit	16 MHz	64 kB	4 kB	10 bit	27 I/O	2.7 V	5.5 V	+ 85 C	Tray
8-bit Microcontrollers - MCU AVR 64 KB FL 2 KB EE 4KB RAM 16 MHZ GRN ATMEGA644PA-MN Microchip Technology 1: €5.83 366In Stock	Mfr. Part No. ATMEGA644PA-MN Mouser Part No 556-ATMEGA644PA-MN	Microchip Technology	8-bit Microcontrollers - MCU AVR 64 KB FL 2 KB EE 4KB RAM 16 MHZ GRN Learn More about Microchip Technology microchip megaavr 8 bit mcus	Datasheet	366In Stock	€5.83 €5.33 €4.83	Min.: 1 Mult.: 1	SMD/SMT	VQFN-44	AVR	8 bit	20 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 IND ATMEGA644-20MUR Microchip Technology 1: €6.04 6,306In Stock	Mfr. Part No. ATMEGA644-20MUR Mouser Part No 556-ATMEGA644-20MUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE-20MHZ 5V IND Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	6,306In Stock	Cut Tape €6.04 €5.87 Reel €5.00	Min.: 1 Mult.: 1 : 4,000	SMD/SMT	VQFN-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
8-bit Microcontrollers - MCU AVR 64K FLSH 8K SRAM 4KB EE-8MHZ 1.8V ATMEGA640V-8AU Microchip Technology 1: €8.84 805In Stock	Mfr. Part No. ATMEGA640V-8AU Mouser Part No 556-ATMEGA640V8AU	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLSH 8K SRAM 4KB EE-8MHZ 1.8V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	805In Stock	€8.84 €8.11 €7.34	Min.: 1 Mult.: 1	SMD/SMT	TQFP-100	AVR	8 bit	8 MHz	64 kB	8 kB	10 bit	86 I/O	1.8 V	5.5 V	+ 85 C	Tray
8-bit Microcontrollers - MCU 20 MHz Ind Temp ATMEGA644A-MU Microchip Technology 1: €4.76 419In Stock	Mfr. Part No. ATMEGA644A-MU Mouser Part No 556-ATMEGA644A-MU	Microchip Technology	8-bit Microcontrollers - MCU 20 MHz Ind Temp Learn More about Microchip Technology microchip megaavr 8 bit mcus	Datasheet	419In Stock	€4.76 €4.35 €3.94	Min.: 1 Mult.: 1	SMD/SMT	VQFN-44	AVR	8 bit	20 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 ATMEGA649A-AUR Microchip Technology 1: €6.20 1,525In Stock	Mfr. Part No. ATMEGA649A-AUR Mouser Part No 556-ATMEGA649A-AUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	1,525In Stock	Cut Tape €6.20 €6.03 €5.66 Reel €5.12	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	TQFP-64	AVR	8 bit	16 MHz					1.8 V	5.5 V		Reel, Cut Tape
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM LCD16MHz,5 ATMEGA649-16AUR Microchip Technology 1: €8.39 2,000In Stock	Mfr. Part No. ATMEGA649-16AUR Mouser Part No 556-ATMEGA649-16AUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM LCD16MHz,5 Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	2,000In Stock	Cut Tape €8.39 €8.20 €7.61 Reel €6.97	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	TQFP-64	AVR	8 bit	16 MHz	64 kB	4 kB	10 bit	69 I/O	2.7 V	5.5 V	+ 85 C	Reel, Cut Tape
8-bit Microcontrollers - MCU 16MHz MLF 105C ATMEGA64A-MN Microchip Technology 1: €5.07 98In Stock	Mfr. Part No. ATMEGA64A-MN Mouser Part No 556-ATMEGA64A-MN	Microchip Technology	8-bit Microcontrollers - MCU 16MHz MLF 105C Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	98In Stock	€5.07 €4.64 €4.20	Min.: 1 Mult.: 1	SMD/SMT	QFN-64	AVR	8 bit	16 MHz	64 kB	4 kB	10 bit	53 I/O	2.7 V	5.5 V	+ 105 C	Tray
8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC LCD ATMEGA649-16MU Microchip Technology 1: €8.23 258In Stock	Mfr. Part No. ATMEGA649-16MU Mouser Part No 556-ATMEGA649-16MU	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC LCD Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	258In Stock	€8.23 €7.55 €6.84 €6.83	Min.: 1 Mult.: 1	SMD/SMT	MLF-64	AVR	8 bit	16 MHz	64 kB	4 kB	10 bit	69 I/O	2.7 V	5.5 V	+ 85 C	Tray
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz, IND ATMEGA645P-MU Microchip Technology 1: €6.05 1,300In Stock	Mfr. Part No. ATMEGA645P-MU Mouser Part No 556-ATMEGA645P-MU	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz, IND Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	1,300In Stock	€6.05 €5.54 €5.01 €4.99	Min.: 1 Mult.: 1	SMD/SMT	QFN-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, EXT ATMEGA64L-8AQR Microchip Technology 1: €9.15 707In Stock	Mfr. Part No. ATMEGA64L-8AQR Mouser Part No 556-ATMEGA64L-8AQR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-8MHz, EXT Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	707In Stock	Cut Tape €9.15 €8.93 Reel €7.59	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	TQFP-64	AVR	8 bit	8 MHz	64 kB	4 kB	10 bit	53 I/O	2.7 V	5.5 V	+ 85 C	Reel, Cut Tape
8-bit Microcontrollers - MCU 16MHz 105C ATMEGA64A-ANR Microchip Technology 1: €5.22 1,662In Stock	Mfr. Part No. ATMEGA64A-ANR Mouser Part No 556-ATMEGA64A-ANR	Microchip Technology	8-bit Microcontrollers - MCU 16MHz 105C Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	1,662In Stock	Cut Tape €5.22 €5.07 Reel €4.33 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	TQFP-64	AVR	8 bit	16 MHz	64 kB	4 kB	10 bit	53 I/O	2.7 V	5.5 V	+ 105 C	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND ATMEGA645A-AUR Microchip Technology 1: €5.66 960In Stock	Mfr. Part No. ATMEGA645A-AUR Mouser Part No 556-ATMEGA645A-AUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	960In Stock	Cut Tape €5.66 €5.52 €5.19 Reel €4.70	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	TQFP-64	AVR	8 bit	16 MHz					1.8 V	5.5 V		Reel, Cut Tape
8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 54 I/O Pins ATMEGA645-16AU Microchip Technology 1: €6.76 267In Stock	Mfr. Part No. ATMEGA645-16AU Mouser Part No 556-ATMEGA645-16AU	Microchip Technology	8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 54 I/O Pins Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	267In Stock	€6.76 €6.18 €5.61 €5.60	Min.: 1 Mult.: 1	SMD/SMT	TQFP-64	AVR	8 bit	16 MHz	64 kB	4 kB	10 bit	54 I/O	2.7 V	5.5 V	+ 85 C	Tray
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz, 5V ATMEGA645-16AUR Microchip Technology 1: €6.91 748In Stock	Mfr. Part No. ATMEGA645-16AUR Mouser Part No 556-ATMEGA645-16AUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz, 5V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	748In Stock	Cut Tape €6.91 €6.72 €6.23 Reel €6.08 Quote Quote	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	TQFP-64	AVR	8 bit	16 MHz	64 kB	4 kB	10 bit	54 I/O	2.7 V	5.5 V	+ 85 C	Reel, Cut Tape
8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ATMEGA644PV-10MU Microchip Technology 1: €6.06 200In Stock	Mfr. Part No. ATMEGA644PV-10MU Mouser Part No 556-ATMEGA644PV-10MU	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	200In Stock	€6.06 €5.56 €5.02 €5.01	Min.: 1 Mult.: 1	SMD/SMT	VQFN-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 FLASH 2K EE 4K SRAM ADC 1.8V ATMEGA645V-8AU Microchip Technology 1: €6.76 176In Stock	Mfr. Part No. ATMEGA645V-8AU Mouser Part No 556-ATMEGA645V8AU	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	176In Stock	€6.76 €6.18 €5.61	Min.: 1 Mult.: 1	SMD/SMT	TQFP-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 20 MHz Ind Temp ATMEGA644A-AU Microchip Technology 1: €4.76 3,012In Stock	Mfr. Part No. ATMEGA644A-AU Mouser Part No 556-ATMEGA644A-AU	Microchip Technology	8-bit Microcontrollers - MCU 20 MHz Ind Temp Learn More about Microchip Technology microchip megaavr 8 bit mcus	Datasheet	3,012In Stock	€4.76 €4.35 €3.94	Min.: 1 Mult.: 1	SMD/SMT	TQFP-44	AVR	8 bit	20 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-16MHz IND ATMEGA64A-AUR Microchip Technology 1: €5.09 2,721In Stock 4,000Expected 02/10/2026	Mfr. Part No. ATMEGA64A-AUR Mouser Part No 556-ATMEGA64A-AUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz IND Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	2,721In Stock 4,000Expected 02/10/2026	Cut Tape €5.09 €4.96 Reel €4.23 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	TQFP-64	AVR	8 bit	16 MHz	64 kB	4 kB	10 bit	53 I/O	2.7 V	5.5 V	+ 85 C	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz, IND ATMEGA64A-MUR Microchip Technology 1: €5.09 6,275In Stock	Mfr. Part No. ATMEGA64A-MUR Mouser Part No 556-ATMEGA64A-MUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz, IND Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	6,275In Stock	Cut Tape €5.09 €4.96 Reel €4.23 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	SMD/SMT	VQFN-64	AVR	8 bit	16 MHz	64 kB	4 kB	10 bit	53 I/O	2.7 V	5.5 V	+ 85 C	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-8MHz, IND ATMEGA64L-8MUR Microchip Technology 1: €9.02 2,732In Stock	Mfr. Part No. ATMEGA64L-8MUR Mouser Part No 556-ATMEGA64L-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	2,732In Stock	Cut Tape €9.02 €8.80 Reel €7.49 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	SMD/SMT	MLF-64	AVR	8 bit	8 MHz	64 kB	4 kB	10 bit	53 I/O	2.7 V	5.5 V	+ 85 C	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 64kB Flash 4kB EEPROM 86 I/O Pins ATMEGA640-16AU Microchip Technology 1: €8.84 469In Stock	Mfr. Part No. ATMEGA640-16AU Mouser Part No 556-ATMEGA640-16AU	Microchip Technology	8-bit Microcontrollers - MCU 64kB Flash 4kB EEPROM 86 I/O Pins Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	469In Stock	€8.84 €8.11 €7.34	Min.: 1 Mult.: 1	SMD/SMT	TQFP-100	AVR	8 bit	16 MHz	64 kB	8 kB	10 bit	86 I/O	2.7 V	5.5 V	+ 85 C	Tray
8-bit Microcontrollers - MCU AVR 64K FLSH 8K SRAM 4KB EE-16MHZ 5V IND ATMEGA640-16AUR Microchip Technology 1: €9.01 679In Stock	Mfr. Part No. ATMEGA640-16AUR Mouser Part No 556-ATMEGA640-16AUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLSH 8K SRAM 4KB EE-16MHZ 5V IND Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	679In Stock	Cut Tape €9.01 €8.78 Reel €7.48 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	SMD/SMT	TQFP-100	AVR	8 bit	16 MHz	64 kB	8 kB	10 bit	86 I/O	2.7 V	5.5 V	+ 85 C	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU AVR 64K FLSH 8K SRAM 4KB EE-8MHZ 1.8V IND ATMEGA640V-8AUR Microchip Technology 1: €9.01 872In Stock	Mfr. Part No. ATMEGA640V-8AUR Mouser Part No 556-ATMEGA640V-8AUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLSH 8K SRAM 4KB EE-8MHZ 1.8V IND Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	872In Stock	Cut Tape €9.01 €8.78 Reel €7.48	Min.: 1 Mult.: 1 : 1,500	SMD/SMT	TQFP-100	AVR	8 bit	8 MHz					1.8 V	5.5 V		Reel, Cut Tape
8-bit Microcontrollers - MCU 20 MHz Ind Temp ATMEGA644A-AUR Microchip Technology 1: €4.88 558In Stock	Mfr. Part No. ATMEGA644A-AUR Mouser Part No 556-ATMEGA644A-AUR	Microchip Technology	8-bit Microcontrollers - MCU 20 MHz Ind Temp Learn More about Microchip Technology microchip megaavr 8 bit mcus	Datasheet	558In Stock	Cut Tape €4.88 €4.76 Reel €4.05 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	1.8 V	5.5 V	+ 85 C	Reel, Cut Tape, MouseReel

ATmega644PA 8-bit AVR® Microcontrollers

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