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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 (USD) Filter the results in the table by unit price based on your quantity.	Qty.
8-bit Microcontrollers - MCU 16 MHz, 85DEG ATMEGA64M1-AU Microchip Technology 1: $6.89 26,149In Stock	Mfr. Part # ATMEGA64M1-AU Mouser Part # 556-ATMEGA64M1-AU	Microchip Technology	8-bit Microcontrollers - MCU 16 MHz, 85DEG Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	26,149In Stock	$6.89 $6.26 $5.74 $5.69 View $5.68 $5.67	Min.: 1 Mult.: 1
8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE-20MHZ 5V IND ATMEGA644-20MUR Microchip Technology 1: $7.02 6,306In Stock	Mfr. Part # ATMEGA644-20MUR Mouser Part # 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 $7.02 $6.83 Reel $5.81	Min.: 1 Mult.: 1 : 4,000
8-bit Microcontrollers - MCU 20 MHz Ind Temp ATMEGA644A-MU Microchip Technology 1: $5.53 419In Stock	Mfr. Part # ATMEGA644A-MU Mouser Part # 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	$5.53 $5.06 $4.58 $4.57 $4.56	Min.: 1 Mult.: 1
8-bit Microcontrollers - MCU AVR 64K FLSH 8K SRAM 4KB EE-8MHZ 1.8V ATMEGA640V-8AU Microchip Technology 1: $10.28 805In Stock	Mfr. Part # ATMEGA640V-8AU Mouser Part # 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	$10.28 $9.43 $8.54	Min.: 1 Mult.: 1
8-bit Microcontrollers - MCU AVR 64 KB FL 2 KB EE 4KB RAM 16 MHZ GRN ATMEGA644PA-MN Microchip Technology 1: $6.78 366In Stock	Mfr. Part # ATMEGA644PA-MN Mouser Part # 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	$6.78 $6.20 $5.62	Min.: 1 Mult.: 1
8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 54 I/O Pins ATMEGA645-16AU Microchip Technology 1: $7.86 267In Stock	Mfr. Part # ATMEGA645-16AU Mouser Part # 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	$7.86 $7.19 $6.52 $6.51	Min.: 1 Mult.: 1
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND ATMEGA649A-AUR Microchip Technology 1: $7.21 1,525In Stock	Mfr. Part # ATMEGA649A-AUR Mouser Part # 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 $7.21 $7.01 $6.58 Reel $5.95	Min.: 1 Mult.: 1 : 1,000
8-bit Microcontrollers - MCU 16MHz 105C ATMEGA64A-ANR Microchip Technology 1: $6.07 1,662In Stock	Mfr. Part # ATMEGA64A-ANR Mouser Part # 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 $6.07 $5.90 Reel $5.03 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz, 5V ATMEGA645-16AUR Microchip Technology 1: $8.04 748In Stock	Mfr. Part # ATMEGA645-16AUR Mouser Part # 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 $8.04 $7.81 $7.24 Reel $7.07 Quote Quote	Min.: 1 Mult.: 1 : 1,000
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM LCD16MHz,5 ATMEGA649-16AUR Microchip Technology 1: $9.76 2,000In Stock	Mfr. Part # ATMEGA649-16AUR Mouser Part # 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 $9.76 $9.54 $8.85 Reel $8.09	Min.: 1 Mult.: 1 : 1,000
8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ATMEGA644PV-10MU Microchip Technology 1: $7.05 200In Stock	Mfr. Part # ATMEGA644PV-10MU Mouser Part # 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	$7.05 $6.46 $5.84 $5.82 Quote Quote	Min.: 1 Mult.: 1
8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC LCD ATMEGA649-16MU Microchip Technology 1: $9.57 258In Stock	Mfr. Part # ATMEGA649-16MU Mouser Part # 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	$9.57 $8.78 $7.95 $7.92	Min.: 1 Mult.: 1
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz, IND ATMEGA645P-MU Microchip Technology 1: $7.03 1,300In Stock	Mfr. Part # ATMEGA645P-MU Mouser Part # 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	$7.03 $6.44 $5.83 $5.82 $5.80	Min.: 1 Mult.: 1
8-bit Microcontrollers - MCU 16MHz MLF 105C ATMEGA64A-MN Microchip Technology 1: $5.89 98In Stock	Mfr. Part # ATMEGA64A-MN Mouser Part # 556-ATMEGA64A-MN	Microchip Technology	8-bit Microcontrollers - MCU 16MHz MLF 105C Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	98In Stock	$5.89 $5.39 $4.87	Min.: 1 Mult.: 1
8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE-20MHZ 5V IND ATMEGA644-20AUR Microchip Technology 1: $7.02 1,863In Stock	Mfr. Part # ATMEGA644-20AUR Mouser Part # 556-ATMEGA644-20AUR	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	1,863In Stock	Cut Tape $7.02 $6.83 Reel $5.81	Min.: 1 Mult.: 1 : 2,000
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-8MHz, EXT ATMEGA64L-8AQR Microchip Technology 1: $10.64 747In Stock	Mfr. Part # ATMEGA64L-8AQR Mouser Part # 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	747In Stock	Cut Tape $10.64 $10.38 Reel $8.83	Min.: 1 Mult.: 1 : 1,000
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND ATMEGA645A-AUR Microchip Technology 1: $6.58 960In Stock	Mfr. Part # ATMEGA645A-AUR Mouser Part # 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 $6.58 $6.42 $6.03 Reel $5.46	Min.: 1 Mult.: 1 : 1,000
8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC 1.8V ATMEGA645V-8AU Microchip Technology 1: $7.86 176In Stock	Mfr. Part # ATMEGA645V-8AU Mouser Part # 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	$7.86 $7.19 $6.52	Min.: 1 Mult.: 1
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz IND ATMEGA64A-AUR Microchip Technology 1: $5.92 2,721In Stock 4,000Expected 10/2/2026	Mfr. Part # ATMEGA64A-AUR Mouser Part # 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 10/2/2026	Cut Tape $5.92 $5.77 Reel $4.92 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz, IND ATMEGA64A-MUR Microchip Technology 1: $5.92 6,275In Stock	Mfr. Part # ATMEGA64A-MUR Mouser Part # 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 $5.92 $5.77 Reel $4.92 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-8MHz, IND ATMEGA64L-8MUR Microchip Technology 1: $10.49 2,732In Stock	Mfr. Part # ATMEGA64L-8MUR Mouser Part # 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 $10.49 $10.23 Reel $8.71 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
8-bit Microcontrollers - MCU 64kB Flash 4kB EEPROM 86 I/O Pins ATMEGA640-16AU Microchip Technology 1: $10.28 469In Stock	Mfr. Part # ATMEGA640-16AU Mouser Part # 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	$10.28 $9.43 $8.54	Min.: 1 Mult.: 1
8-bit Microcontrollers - MCU AVR 64K FLSH 8K SRAM 4KB EE-16MHZ 5V IND ATMEGA640-16AUR Microchip Technology 1: $10.48 679In Stock	Mfr. Part # ATMEGA640-16AUR Mouser Part # 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 $10.48 $10.21 Reel $8.70 MouseReel Available	Min.: 1 Mult.: 1 : 1,500
8-bit Microcontrollers - MCU AVR 64K FLSH 8K SRAM 4KB EE-8MHZ 1.8V IND ATMEGA640V-8AUR Microchip Technology 1: $10.48 872In Stock	Mfr. Part # ATMEGA640V-8AUR Mouser Part # 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 $10.48 $10.21 Reel $8.70	Min.: 1 Mult.: 1 : 1,500
8-bit Microcontrollers - MCU 20 MHz Ind Temp ATMEGA644A-AU Microchip Technology 1: $5.53 3,012In Stock	Mfr. Part # ATMEGA644A-AU Mouser Part # 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	$5.53 $5.06 $4.58	Min.: 1 Mult.: 1

ATmega644PA 8-bit AVR® Microcontrollers

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