Microcontrollers - MCU – Mouser United Kingdom

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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 (GBP) 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: £5.18 26,149In 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	26,149In Stock	£5.18 £4.70 £4.31 £4.29	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 64K FLSH 4K SRAM 2KB EE-20MHZ 5V IND ATMEGA644-20MUR Microchip Technology 1: £5.27 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 £5.27 £5.12 Reel £4.37	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 20 MHz Ind Temp ATMEGA644A-MU Microchip Technology 1: £4.16 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	£4.16 £3.80 £3.44	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 8K SRAM 4KB EE-8MHZ 1.8V ATMEGA640V-8AU Microchip Technology 1: £7.72 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	£7.72 £7.08 £6.41	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 AVR 64 KB FL 2 KB EE 4KB RAM 16 MHZ GRN ATMEGA644PA-MN Microchip Technology 1: £5.09 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	£5.09 £4.65 £4.22	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 64kB Flash 2kB EEPROM 54 I/O Pins ATMEGA645-16AU Microchip Technology 1: £5.90 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	£5.90 £5.40 £4.90 £4.89	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-20MHz, IND ATMEGA649A-AUR Microchip Technology 1: £5.41 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 £5.41 £5.26 £4.94 Reel £4.47	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 16MHz 105C ATMEGA64A-ANR Microchip Technology 1: £4.56 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 £4.56 £4.43 Reel £3.78 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-16MHz, 5V ATMEGA645-16AUR Microchip Technology 1: £6.03 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 £6.03 £5.87 £5.44 Reel £5.31 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 64KB FLSH 2KB EE 4KB SRAM LCD16MHz,5 ATMEGA649-16AUR Microchip Technology 1: £7.32 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 £7.32 £7.16 £6.64 Reel £6.08	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 AVR 64K FLASH 2K EE 4K SRAM ATMEGA644PV-10MU Microchip Technology 1: £5.29 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	£5.29 £4.85 £4.38 £4.37	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 LCD ATMEGA649-16MU Microchip Technology 1: £7.18 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	£7.18 £6.59 £5.97 £5.96	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: £5.28 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	£5.28 £4.84 £4.37 £4.36	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 16MHz MLF 105C ATMEGA64A-MN Microchip Technology 1: £4.43 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	£4.43 £4.05 £3.67	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 FLSH 4K SRAM 2KB EE-20MHZ 5V IND ATMEGA644-20AUR Microchip Technology 1: £5.27 1,863In Stock	Mfr. Part No. ATMEGA644-20AUR Mouser Part No 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 £5.27 £5.12 Reel £4.37	Min.: 1 Mult.: 1 : 2,000	SMD/SMT	TQFP-44	AVR	8 bit	20 MHz					2.7 V	5.5 V		Reel, Cut Tape
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-8MHz, EXT ATMEGA64L-8AQR Microchip Technology 1: £7.99 747In 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	747In Stock	Cut Tape £7.99 £7.80 Reel £6.63	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 AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND ATMEGA645A-AUR Microchip Technology 1: £4.94 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 £4.94 £4.82 £4.53 Reel £4.10	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 64K FLASH 2K EE 4K SRAM ADC 1.8V ATMEGA645V-8AU Microchip Technology 1: £5.90 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	£5.90 £5.40 £4.90	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 AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz IND ATMEGA64A-AUR Microchip Technology 1: £4.44 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 £4.44 £4.33 Reel £3.69 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: £4.44 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 £4.44 £4.33 Reel £3.69 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: £7.87 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 £7.87 £7.68 Reel £6.54 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: £7.72 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	£7.72 £7.08 £6.41	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: £7.87 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 £7.87 £7.66 Reel £6.53 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: £7.87 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 £7.87 £7.66 Reel £6.53	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-AU Microchip Technology 1: £4.16 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	£4.16 £3.80 £3.44	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

ATmega644PA 8-bit AVR® Microcontrollers

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