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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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Part #

8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 54 I/O Pins

ATMEGA64-16AU
Microchip Technology
1: $15.81
661In Stock

Mfr. Part #
ATMEGA64-16AU

Mouser Part #
556-ATMEGA64-16AU

Microchip Technology

8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 54 I/O Pins

Datasheet

661In Stock

$15.81

$14.52

$13.14

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU 64kB Flash 4kB EEPROM 86 I/O Pins

ATMEGA640-16AU
Microchip Technology
1: $15.78
1,071In Stock

Mfr. Part #
ATMEGA640-16AU

Mouser Part #
556-ATMEGA640-16AU

Microchip Technology

8-bit Microcontrollers - MCU 64kB Flash 4kB EEPROM 86 I/O Pins

Datasheet

1,071In Stock

$15.78

$14.48

$13.11

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU 20 MHz Ind Temp

ATMEGA644A-AU
Microchip Technology
1: $8.49
695In Stock

Mfr. Part #
ATMEGA644A-AU

Mouser Part #
556-ATMEGA644A-AU

Microchip Technology

8-bit Microcontrollers - MCU 20 MHz Ind Temp

Datasheet

695In Stock

$8.49

$7.77

$7.03

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE 20MHZ 5V

ATMEGA644P-20AU
Microchip Technology
1: $10.82
833In Stock

Mfr. Part #
ATMEGA644P-20AU

Mouser Part #
556-ATMEGA644P-20AU

Microchip Technology

8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE 20MHZ 5V

Datasheet

833In Stock

$10.82

$9.92

$8.96

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE 20MHZ 5V

ATMEGA644P-20MU
Microchip Technology
1: $10.82
1,116In Stock

Mfr. Part #
ATMEGA644P-20MU

Mouser Part #
556-ATMEGA644P-20MU

Microchip Technology

8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE 20MHZ 5V

Datasheet

1,116In Stock

$10.82

$9.92

$8.96

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU 16 MHz, 105C, Green, TQFP

ATMEGA644PA-AN
Microchip Technology
1: $10.32
780In Stock

Mfr. Part #
ATMEGA644PA-AN

Mouser Part #
556-ATMEGA644PA-AN

Microchip Technology

8-bit Microcontrollers - MCU 16 MHz, 105C, Green, TQFP

Datasheet

780In Stock

$10.32

$9.44

$8.55

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB RAM-20MHz IND

ATMEGA644PA-AUR
Microchip Technology
1: $10.13
1,312In Stock

Mfr. Part #
ATMEGA644PA-AUR

Mouser Part #
556-ATMEGA644PA-AUR

Microchip Technology

8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB RAM-20MHz IND

Datasheet

1,312In Stock

Cut Tape

$10.13

$9.29

$8.41

Reel

$8.41

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,000

8-bit Microcontrollers - MCU 64K Flash 2K EEPROM 4K SRAM 32 IO Pins

ATMEGA644PA-MU
Microchip Technology
1: $9.89
684In Stock

Mfr. Part #
ATMEGA644PA-MU

Mouser Part #
556-ATMEGA644PA-MU

Microchip Technology

8-bit Microcontrollers - MCU 64K Flash 2K EEPROM 4K SRAM 32 IO Pins

Datasheet

684In Stock

$9.89

$9.07

$8.23

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU 64K Flash 2K EEPROM 4K SRAM 32 IO Pins

ATMEGA644PA-PU
Microchip Technology
1: $10.53
947In Stock

Mfr. Part #
ATMEGA644PA-PU

Mouser Part #
556-ATMEGA644PA-PU

Microchip Technology

8-bit Microcontrollers - MCU 64K Flash 2K EEPROM 4K SRAM 32 IO Pins

Datasheet

947In Stock

$10.53

$9.62

$8.73

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC-10MHZ

ATMEGA644PV-10AU
Microchip Technology
1: $10.82
458In Stock

Mfr. Part #
ATMEGA644PV-10AU

Mouser Part #
556-ATMEGA644PV10AU

Microchip Technology

8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC-10MHZ

Datasheet

458In Stock

$10.82

$9.92

$8.96

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND

ATMEGA649A-AUR
Microchip Technology
1: $11.07
1,925In 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

Datasheet

1,925In Stock

Cut Tape

$11.07

$10.15

$9.19

Reel

$9.19

Min.: 1
Mult.: 1

Reel: 1,000

8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz IND

ATMEGA64A-AUR
Microchip Technology
1: $9.09
299In Stock

Mfr. Part #
ATMEGA64A-AUR

Mouser Part #
556-ATMEGA64A-AUR

Microchip Technology

8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz IND

Datasheet

299In Stock

Cut Tape

$9.09

$8.35

$7.55

Reel

$7.55

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

8-bit Microcontrollers - MCU 16 MHz, 85DEG

ATMEGA64M1-MU
Microchip Technology
1: $10.58
841In Stock

Mfr. Part #
ATMEGA64M1-MU

Mouser Part #
556-ATMEGA64M1-MU

Microchip Technology

8-bit Microcontrollers - MCU 16 MHz, 85DEG

Datasheet

841In Stock

$10.58

$9.70

$8.81

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE 20MHZ 5V

ATMEGA644P-20PU
Microchip Technology
1: $11.50
514In Stock

Mfr. Part #
ATMEGA644P-20PU

Mouser Part #
556-ATMEGA644P-20PU

Microchip Technology

8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE 20MHZ 5V

Datasheet

514In Stock

$11.50

$10.53

$9.55

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHZ 5V

ATMEGA64-16AUR
Microchip Technology
1: $16.10
148In Stock
1,000Expected 2026-03-26

Mfr. Part #
ATMEGA64-16AUR

Mouser Part #
556-ATMEGA64-16AUR

Microchip Technology

8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHZ 5V

Datasheet

148In Stock

1,000Expected 2026-03-26

Cut Tape

$16.10

$14.77

$13.37

Reel

$13.37

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC

ATMEGA64-16MU
Microchip Technology
1: $15.81
25In Stock

Mfr. Part #
ATMEGA64-16MU

Mouser Part #
556-ATMEGA64-16MU

Microchip Technology

8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC

Datasheet

25In Stock

$15.81

$14.52

$13.14

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU AVR 64K FLSH 8K SRAM 4KB EE-8MHZ 1.8V IND

ATMEGA640V-8AUR
Microchip Technology
1: $16.09
1,174In 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

Datasheet

1,174In Stock

Cut Tape

$16.09

$14.74

$13.35

Reel

$13.35

Min.: 1
Mult.: 1

Reel: 1,500

8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 32 I/O Pins

ATMEGA644-20PU
Microchip Technology
1: $11.21
57In Stock

Mfr. Part #
ATMEGA644-20PU

Mouser Part #
556-ATMEGA644-20PU

Microchip Technology

8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 32 I/O Pins

Datasheet

57In Stock

$11.21

$10.25

$9.29

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU 20 MHz Ind Temp

ATMEGA644A-MU
Microchip Technology
1: $8.49
93In Stock

Mfr. Part #
ATMEGA644A-MU

Mouser Part #
556-ATMEGA644A-MU

Microchip Technology

8-bit Microcontrollers - MCU 20 MHz Ind Temp

Datasheet

93In Stock

$8.49

$7.77

$7.03

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU 20 MHz Ind Temp

ATMEGA644A-PU
Microchip Technology
1: $9.06
235In Stock
280Expected 2026-03-03

Mfr. Part #
ATMEGA644A-PU

Mouser Part #
556-ATMEGA644A-PU

Microchip Technology

8-bit Microcontrollers - MCU 20 MHz Ind Temp

Datasheet

235In Stock

280Expected 2026-03-03

$9.06

$8.29

$7.51

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM

ATMEGA644PV-10MU
Microchip Technology
1: $10.82
200In Stock

Mfr. Part #
ATMEGA644PV-10MU

Mouser Part #
556-ATMEGA644PV-10MU

Microchip Technology

8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM

Datasheet

200In Stock

$10.82

$9.92

$8.96

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND

ATMEGA645A-AU
Microchip Technology
1: $9.79
94In Stock

Mfr. Part #
ATMEGA645A-AU

Mouser Part #
556-ATMEGA645A-AU

Microchip Technology

8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND

Datasheet

94In Stock

$9.79

$9.00

$8.14

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND

ATMEGA649A-AU
Microchip Technology
1: $10.79
26In Stock

Mfr. Part #
ATMEGA649A-AU

Mouser Part #
556-ATMEGA649A-AU

Microchip Technology

8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND

Datasheet

26In Stock

$10.79

$9.89

$8.95

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 54 I/O Pins

ATMEGA64L-8AU
Microchip Technology
1: $15.81
22In Stock
360Expected 2026-04-16

Mfr. Part #
ATMEGA64L-8AU

Mouser Part #
556-ATMEGA64L-8AU

Microchip Technology

8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 54 I/O Pins

Datasheet

22In Stock

360Expected 2026-04-16

$15.81

$14.52

$13.14

Min.: 1
Mult.: 1

8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-8MHz, IND

ATMEGA64L-8AUR
Microchip Technology
1: $16.10
20In Stock

Mfr. Part #
ATMEGA64L-8AUR

Mouser Part #
556-ATMEGA64L-8AUR

Microchip Technology

8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-8MHz, IND

Datasheet

20In Stock

Cut Tape

$16.10

$14.77

$13.37

Reel

$13.37

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000