8-bit Microcontrollers - MCU – Mouser United Kingdom

.hide-partial { max-height: none; } .show-more { display: none; }

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.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 86

Applied Filters:

Program Memory Size

Data RAM Size

Package/Case

Maximum Clock Frequency

ADC Resolution

Number of I/Os

Supply Voltage - Min

Supply Voltage - Max

Mounting Style

Minimum Operating Temperature

Maximum Operating Temperature

Series

Packaging

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	Core	Program Memory Size	Data RAM Size	Package/Case	Maximum Clock Frequency	ADC Resolution	Number of I/Os	Supply Voltage - Min	Supply Voltage - Max	Mounting Style	Data Bus Width	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
8-bit Microcontrollers - MCU 64K Flash 2K EEPROM 4K SRAM 32 IO Pins ATMEGA644PA-MU Microchip Technology 1: £4.84 791In Stock	Mfr. Part No. ATMEGA644PA-MU Mouser Part No 556-ATMEGA644PA-MU	Microchip Technology	8-bit Microcontrollers - MCU 64K Flash 2K EEPROM 4K SRAM 32 IO Pins Learn More about Microchip Technology microchip megaavr 8 bit mcus	Datasheet	791In Stock	£4.84 £4.43 £4.11 £4.02	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	QFN-44	20 MHz	10 bit	32 I/O	1.8 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega644	Tray
8-bit Microcontrollers - MCU 64K Flash 2K EEPROM 4K SRAM 32 IO Pins ATMEGA644PA-PU Microchip Technology 1: £5.15 574In Stock	Mfr. Part No. ATMEGA644PA-PU Mouser Part No 556-ATMEGA644PA-PU	Microchip Technology	8-bit Microcontrollers - MCU 64K Flash 2K EEPROM 4K SRAM 32 IO Pins Learn More about Microchip Technology microchip megaavr 8 bit mcus	Datasheet	574In Stock	£5.15 £4.71 £4.27	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	PDIP-40	20 MHz	10 bit	32 I/O	1.8 V	5.5 V	Through Hole	8 bit	- 40 C	+ 85 C	ATmega644	Tube
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-10MHz, 1.8 ATMEGA644PV-10AUR Microchip Technology 1: £5.40 840In Stock	Mfr. Part No. ATMEGA644PV-10AUR Mouser Part No 556-ATMEGA644PV10AUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-10MHz, 1.8 Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	840In Stock	Cut Tape £5.40 £5.26 Reel £4.49	Min.: 1 Mult.: 1 : 2,000	AVR	64 kB	4 kB	TQFP-44	10 MHz	10 bit	32 I/O	1.8 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega644P	Reel, Cut Tape
8-bit Microcontrollers - MCU 16 MHz, 85DEG ATMEGA64M1-MU Microchip Technology 1: £5.18 1,218In Stock	Mfr. Part No. ATMEGA64M1-MU Mouser Part No 556-ATMEGA64M1-MU	Microchip Technology	8-bit Microcontrollers - MCU 16 MHz, 85DEG Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	1,218In Stock	£5.18 £4.75 £4.31	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	QFN-32	16 MHz	10 bit	27 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega64M1	Tray
8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 32 I/O Pins ATMEGA644-20AU Microchip Technology 1: £5.15 329In Stock 2,400On Order	Mfr. Part No. ATMEGA644-20AU Mouser Part No 556-ATMEGA644-20AU	Microchip Technology	8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 32 I/O Pins Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	329In Stock 2,400On Order On Order Ship Dates Mfr. No: ATMEGA644-20AU Stock: 329 Can Dispatch Immediately On Order: 960 Expected 25/01/2027 1,440 Expected 04/03/2027 Factory Lead Time: 20 Weeks	£5.15 £4.73 £4.37 £4.29	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	TQFP-44	20 MHz	10 bit	32 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega644	Tray
8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE-20MHZ 5V IND ATMEGA644-20AUR Microchip Technology 1: £5.27 1,563In 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	1,563In Stock	Cut Tape £5.27 £5.12 Reel £4.37	Min.: 1 Mult.: 1 : 2,000	AVR			TQFP-44	20 MHz			2.7 V	5.5 V	SMD/SMT	8 bit			ATmega644	Reel, Cut Tape
8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 32 I/O Pins ATMEGA644V-10AU Microchip Technology 1: £5.15 232In Stock	Mfr. Part No. ATMEGA644V-10AU Mouser Part No 556-ATMEGA644V10AU	Microchip Technology	8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 32 I/O Pins Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	232In Stock	£5.15 £4.73 £4.29	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	TQFP-44	10 MHz	10 bit	32 I/O	1.8 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega644	Tray
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND ATMEGA649A-AUR Microchip Technology 1: £5.41 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	525In Stock	Cut Tape £5.41 £5.26 £4.94 Reel £4.47	Min.: 1 Mult.: 1 : 1,000	AVR			TQFP-64	16 MHz			1.8 V	5.5 V	SMD/SMT	8 bit			ATmega649A	Reel, Cut Tape
8-bit Microcontrollers - MCU 64K Flsh 2K EEPROM 4K SRAM 16MHz ATMEGA64A-AU Microchip Technology 1: £4.32 2,025In Stock 2,160Expected 21/01/2027	Mfr. Part No. ATMEGA64A-AU Mouser Part No 556-ATMEGA64A-AU	Microchip Technology	8-bit Microcontrollers - MCU 64K Flsh 2K EEPROM 4K SRAM 16MHz Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	2,025In Stock 2,160Expected 21/01/2027	£4.32 £3.96 £3.59	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	TQFP-64	16 MHz	10 bit	53 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega64A	Tray
8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 32 I/O Pins ATMEGA644-20PU Microchip Technology 1: £5.48 29In Stock 110Expected 17/11/2026	Mfr. Part No. ATMEGA644-20PU Mouser Part No 556-ATMEGA644-20PU	Microchip Technology	8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 32 I/O Pins Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	29In Stock 110Expected 17/11/2026	£5.48 £5.01 £4.54	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	PDIP-40	20 MHz	10 bit	32 I/O	2.7 V	5.5 V	Through Hole	8 bit	- 40 C	+ 85 C	ATmega644	Tube
8-bit Microcontrollers - MCU 20 MHz Ind Temp ATMEGA644A-PU Microchip Technology 1: £4.43 12In Stock 390Expected 30/10/2026	Mfr. Part No. ATMEGA644A-PU Mouser Part No 556-ATMEGA644A-PU	Microchip Technology	8-bit Microcontrollers - MCU 20 MHz Ind Temp Learn More about Microchip Technology microchip megaavr 8 bit mcus	Datasheet	12In Stock 390Expected 30/10/2026	£4.43 £4.05 £3.68	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	PDIP-40	20 MHz	10 bit	32 I/O	1.8 V	5.5 V	Through Hole	8 bit	- 40 C	+ 85 C	ATmega644	Tube
8-bit Microcontrollers - MCU 64K Flash 2K EEPROM 4K SRAM 32 IO Pins ATMEGA644PA-AU Microchip Technology 1: £4.93 214In Stock	Mfr. Part No. ATMEGA644PA-AU Mouser Part No 556-ATMEGA644PA-AU	Microchip Technology	8-bit Microcontrollers - MCU 64K Flash 2K EEPROM 4K SRAM 32 IO Pins Learn More about Microchip Technology microchip megaavr 8 bit mcus	Datasheet	214In Stock	£4.93 £4.85 £4.53 £4.43 View £4.11 £4.02	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	TQFP-44	20 MHz	10 bit	32 I/O	1.8 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega644	Tray
8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE 20MHZ 5V ATMEGA644P-20AQ Microchip Technology 1: £5.40 47In Stock	Mfr. Part No. ATMEGA644P-20AQ Mouser Part No 556-ATMEGA644P-20AQ	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE 20MHZ 5V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	47In Stock	£5.40 £4.96 £4.49	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	TQFP-44	20 MHz		32 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega644P	Tray
8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC LCD ATMEGA649-16AU Microchip Technology 1: £7.18 25In Stock	Mfr. Part No. ATMEGA649-16AU Mouser Part No 556-ATMEGA649-16AU	Microchip Technology	8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC LCD Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	25In Stock	£7.18 £6.59 £5.97	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	TQFP-64	16 MHz	10 bit	69 I/O	4.5 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega649	Tray
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND ATMEGA649A-AU Microchip Technology 1: £5.28 23In Stock	Mfr. Part No. ATMEGA649A-AU Mouser Part No 556-ATMEGA649A-AU	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	23In Stock	£5.28 £4.84 £4.37	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	TQFP-64	16 MHz	10 bit	54 I/O	1.8 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega649A	Tray
8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 54 I/O Pins ATMEGA64L-8AU Microchip Technology 1: £7.73 12In Stock 990On Order	Mfr. Part No. ATMEGA64L-8AU Mouser Part No 556-ATMEGA64L-8AU	Microchip Technology	8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 54 I/O Pins Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	12In Stock 990On Order On Order Ship Dates Mfr. No: ATMEGA64L-8AU Stock: 12 Can Dispatch Immediately On Order: 90 Pending 180 Expected 08/03/2027 270 Expected 01/04/2027 450 Expected 15/04/2027 Factory Lead Time: 28 Weeks	£7.73 £7.11 £6.43	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	TQFP-64	8 MHz	10 bit	53 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega64	Tray
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-8MHz, IND ATMEGA64L-8AUR Microchip Technology 1: £7.87 15In Stock 2,000Expected 12/02/2027	Mfr. Part No. ATMEGA64L-8AUR Mouser Part No 556-ATMEGA64L-8AUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-8MHz, IND Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	15In Stock 2,000Expected 12/02/2027	Cut Tape £7.87 £7.68 Reel £6.54 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	AVR	64 kB	4 kB	TQFP-64	8 MHz	10 bit	53 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega64	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHZ 5V ATMEGA64-16AUR Microchip Technology 1: £7.87 2,000Expected 15/03/2027	Mfr. Part No. ATMEGA64-16AUR Mouser Part No 556-ATMEGA64-16AUR	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHZ 5V Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	2,000Expected 15/03/2027	Cut Tape £7.87 £7.68 Reel £6.54 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	AVR	64 kB	4 kB	TQFP-64	16 MHz	10 bit	53 I/O	4.2 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega64	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE-20MHZ IND,5V ATMEGA644P-20AUR Microchip Technology 1: £5.40 3,999Expected 04/03/2027	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	3,999Expected 04/03/2027	Cut Tape £5.40 £5.26 Reel £4.49 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	AVR	64 kB	4 kB	TQFP-44	20 MHz	10 bit	32 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega644P	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 64kB Flash 4kB EEPROM 86 I/O Pins ATMEGA640-16AU Microchip Technology 1: £7.72 549Expected 22/03/2027	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	549Expected 22/03/2027	£7.72 £7.08 £6.41	Min.: 1 Mult.: 1	AVR	64 kB	8 kB	TQFP-100	16 MHz	10 bit	86 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega640	Tray
8-bit Microcontrollers - MCU AVR 64K FLSH 8K SRAM 4KB EE-8MHZ 1.8V ATMEGA640V-8AU Microchip Technology 1: £7.07 180Expected 29/03/2027	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	180Expected 29/03/2027	£7.07 £7.06 £6.56 £6.39	Min.: 1 Mult.: 1	AVR	64 kB	8 kB	TQFP-100	8 MHz	10 bit	86 I/O	1.8 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega640	Tray
8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 54 I/O Pins ATMEGA64-16AU Microchip Technology 1: £7.73 899Expected 15/02/2027	Mfr. Part No. ATMEGA64-16AU Mouser Part No 556-ATMEGA64-16AU	Microchip Technology	8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 54 I/O Pins Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	899Expected 15/02/2027	£7.73 £7.11 £6.43	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	TQFP-64	16 MHz	10 bit	53 I/O	4.2 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega64	Tray
8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE 20MHZ 5V ATMEGA644P-20AU Microchip Technology 1: £5.29 689On 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	689On Order On Order Ship Dates Mfr. No: ATMEGA644P-20AU Stock: 0 On Order: 49 Expected 11/12/2026 640 Expected 28/01/2027 Factory Lead Time: 20 Weeks	£5.29 £4.85 £4.38	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	TQFP-44	20 MHz	10 bit	32 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega644P	Tray
8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC-10MHZ ATMEGA644PV-10AU Microchip Technology 1: £5.29 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 25/01/2027 480 Expected 08/03/2027 Factory Lead Time: 20 Weeks	£5.29 £4.85 £4.38	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	TQFP-44	10 MHz	10 bit	32 I/O	1.8 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega644P	Tray
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND ATMEGA645A-AU Microchip Technology 1: £4.79 478Expected 21/01/2027	Mfr. Part No. ATMEGA645A-AU Mouser Part No 556-ATMEGA645A-AU	Microchip Technology	8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND Learn More about Microchip Technology microchip atmega644pa mcus	Datasheet	478Expected 21/01/2027	£4.79 £4.40 £3.98	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	TQFP-64	16 MHz	10 bit	54 I/O	1.8 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega645A	Tray

ATmega644PA 8-bit AVR® Microcontrollers

Applied Filters:

Customer Service Office

Company

Resources

Support

Share This

ATmega644PA 8-bit AVR® Microcontrollers

Applied Filters: