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ATmega644 Series 8-bit Microcontrollers - MCU

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CHF) 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 AVR 64K FLSH 4K SRAM 2KB EE-20MHZ 5V IND ATMEGA644-20MUR Microchip Technology 1: CHF 5.83 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 CHF 5.83 CHF 5.68 CHF 5.36 Reel CHF 4.82	Min.: 1 Mult.: 1 : 4’000	AVR	64 kB	4 kB	VQFN-44	20 MHz	10 bit	32 I/O	2.7 V	5.5 V	SMD/SMT	8 bit	- 40 C	+ 85 C	ATmega644	Reel, Cut Tape
8-bit Microcontrollers - MCU 20 MHz Ind Temp ATMEGA644A-AUR Microchip Technology 1: CHF 4.71 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 CHF 4.71 CHF 4.61 Reel CHF 3.91 MouseReel Available	Min.: 1 Mult.: 1 : 2’000	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	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU AVR 64 KB FL 2 KB EE 4KB RAM 16 MHZ GRN ATMEGA644PA-MN Microchip Technology 1: CHF 5.63 337In 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	337In Stock	CHF 5.63 CHF 5.16 CHF 4.67	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	VQFN-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 20 MHz Ind Temp ATMEGA644A-MU Microchip Technology 1: CHF 4.60 371In 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	371In Stock	CHF 4.60 CHF 4.20 CHF 3.81	Min.: 1 Mult.: 1	AVR	64 kB	4 kB	VQFN-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 16 MHz, 105C, Green, TQFP ATMEGA644PA-AN Microchip Technology 1: CHF 5.59 734In Stock	Mfr. Part No. ATMEGA644PA-AN Mouser Part No 556-ATMEGA644PA-AN	Microchip Technology	8-bit Microcontrollers - MCU 16 MHz, 105C, Green, TQFP Learn More about Microchip Technology microchip megaavr 8 bit mcus	Datasheet	734In Stock	CHF 5.59 CHF 5.11 CHF 4.63	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 64KB FLSH 2KB EE 4KB RAM-20MHz IND ATMEGA644PA-AUR Microchip Technology 1: CHF 5.48 4’029In Stock	Mfr. Part No. ATMEGA644PA-AUR Mouser Part No 556-ATMEGA644PA-AUR	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	4’029In Stock	Cut Tape CHF 5.48 CHF 5.36 Reel CHF 4.56 MouseReel Available	Min.: 1 Mult.: 1 : 2’000	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	Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 20 MHz Ind Temp ATMEGA644A-AU Microchip Technology 1: CHF 4.60 2’271In 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	2’271In Stock	CHF 4.60 CHF 4.20 CHF 3.81	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 64K Flash 2K EEPROM 4K SRAM 32 IO Pins ATMEGA644PA-MU Microchip Technology 1: CHF 5.35 768In 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	768In Stock	CHF 5.35 CHF 4.91 CHF 4.46	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: CHF 5.70 564In 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	564In Stock	CHF 5.70 CHF 5.21 CHF 4.73	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 64K FLSH 4K SRAM 2KB EE-20MHZ 5V IND ATMEGA644-20AUR Microchip Technology 1: CHF 5.83 1’553In 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	1’553In Stock	Cut Tape CHF 5.83 CHF 5.68 Reel CHF 4.83	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: CHF 5.70 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	CHF 5.70 CHF 5.23 CHF 4.75	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 64kB Flash 2kB EEPROM 32 I/O Pins ATMEGA644-20PU Microchip Technology 1: CHF 6.07 29In Stock 110Expected 11/17/2026	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 11/17/2026	CHF 6.07 CHF 5.55 CHF 5.03	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: CHF 4.90 2In Stock 620Expected 1/8/2027	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	2In Stock 620Expected 1/8/2027	CHF 4.90 CHF 4.49 CHF 4.06	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: CHF 5.35 137In Stock 480Expected 11/26/2026	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	137In Stock 480Expected 11/26/2026	CHF 5.35 CHF 4.91 CHF 4.46	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 64kB Flash 2kB EEPROM 32 I/O Pins ATMEGA644-20AU Microchip Technology 1: CHF 5.70 144In 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	144In Stock 2’400On Order On Order Ship Dates Mfr. No: ATMEGA644-20AU Stock: 144 Can Dispatch Immediately On Order: 1’440 Expected 1/18/2027 960 Expected 1/25/2027 Factory Lead Time: 20 Weeks	CHF 5.70 CHF 5.23 CHF 4.75	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 ATMEGA644-20MU Microchip Technology 360: CHF 4.75 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	CHF 4.75	Min.: 360 Mult.: 360	AVR	64 kB	4 kB	MLF-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 20 MHz Ind Temp ATMEGA644A-MUR Microchip Technology 4’000: CHF 3.91 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 CHF 3.91	Min.: 4’000 Mult.: 4’000 : 4’000	AVR			VQFN-44	20 MHz			1.8 V	5.5 V	SMD/SMT	8 bit			ATmega644	Reel
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB RAM-16MHz 105C ATMEGA644PA-MNR Microchip Technology 4’000: CHF 4.75 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 CHF 4.75	Min.: 4’000 Mult.: 4’000 : 4’000	AVR			VQFN-44	20 MHz			1.8 V	5.5 V	SMD/SMT	8 bit			ATmega644	Reel
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB RAM-20MHz IND ATMEGA644PA-MUR Microchip Technology 4’000: CHF 4.52 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 CHF 4.52	Min.: 4’000 Mult.: 4’000 : 4’000	AVR			VQFN-44	20 MHz			1.8 V	5.5 V	SMD/SMT	8 bit			ATmega644	Reel
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-10MHz, 1.8V ATMEGA644V-10MUR Microchip Technology 4’000: CHF 4.83 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 CHF 4.83	Min.: 4’000 Mult.: 4’000 : 4’000	AVR			VQFN-44	10 MHz			1.8 V	5.5 V	SMD/SMT	8 bit			ATmega644	Reel
8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC-10MHZ ATMEGA644V-10MU Microchip Technology 360: CHF 4.75 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	CHF 4.75	Min.: 360 Mult.: 360	AVR	64 kB	4 kB	MLF-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 RAM-16MHz 105C ATMEGA644PA-ANR Microchip Technology 2’000: CHF 4.75 Non-Stocked Lead-Time 19 Weeks	Mfr. Part No. ATMEGA644PA-ANR Mouser Part No 556-ATMEGA644PA-ANR	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 19 Weeks	Reel CHF 4.75	Min.: 2’000 Mult.: 2’000 : 2’000	AVR			TQFP-44	20 MHz			1.8 V	5.5 V	SMD/SMT	8 bit			ATmega644	Reel
8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-10MHz, 1.8 ATMEGA644V-10AUR Microchip Technology 2’000: CHF 4.83 Non-Stocked Lead-Time 19 Weeks	Mfr. Part No. ATMEGA644V-10AUR Mouser Part No 556-ATMEGA644V-10AUR	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	Non-Stocked Lead-Time 19 Weeks	Reel CHF 4.83	Min.: 2’000 Mult.: 2’000 : 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	ATmega644	Reel

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ATmega644 Series 8-bit Microcontrollers - MCU

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