8-bit Microcontrollers - MCU – Mouser Hong Kong

.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; }

Part #

8-bit Microcontrollers - MCU 16 MHz, 85DEG

ATMEGA64M1-AU
Microchip Technology
1: HK$56.64
26,199In Stock

Mfr. Part No.
ATMEGA64M1-AU

Mouser Part No
556-ATMEGA64M1-AU

Microchip Technology

8-bit Microcontrollers - MCU 16 MHz, 85DEG

Learn More

Datasheet

26,199In Stock

HK$56.64

HK$51.95

HK$47.18

Min.: 1
Mult.: 1

AVR

64 kB

4 kB

TQFP-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 AVR 64 KB FL 2 KB EE 4KB RAM 16 MHZ GRN

ATMEGA644PA-MN
Microchip Technology
1: HK$55.73
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

Datasheet

366In Stock

HK$55.73

HK$50.96

HK$46.20

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 AVR 64K FLSH 4K SRAM 2KB EE-20MHZ 5V IND

ATMEGA644-20MUR
Microchip Technology
1: HK$57.70
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

Datasheet

6,306In Stock

Cut Tape

HK$57.70

HK$56.14

Reel

HK$47.76

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 AVR 64K FLSH 8K SRAM 4KB EE-8MHZ 1.8V

ATMEGA640V-8AU
Microchip Technology
1: HK$84.50
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

Datasheet

805In Stock

HK$84.50

HK$77.51

HK$70.20

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 20 MHz Ind Temp

ATMEGA644A-MU
Microchip Technology
1: HK$45.46
431In Stock

Mfr. Part No.
ATMEGA644A-MU

Mouser Part No
556-ATMEGA644A-MU

Microchip Technology

8-bit Microcontrollers - MCU 20 MHz Ind Temp

Learn More

Datasheet

431In Stock

HK$45.46

HK$41.59

HK$37.65

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 AVR 64KB FLSH 2KB EE 4KB SRAM LCD16MHz,5

ATMEGA649-16AUR
Microchip Technology
1: HK$80.23
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

Datasheet

2,000In Stock

Cut Tape

HK$80.23

HK$78.42

Reel

HK$66.66

Min.: 1
Mult.: 1

: 1,000

AVR

64 kB

4 kB

TQFP-64

16 MHz

10 bit

69 I/O

2.7 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

ATmega649

Reel, Cut Tape

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

ATMEGA644-20AUR
Microchip Technology
1: HK$57.70
3,863In 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

Datasheet

3,863In Stock

Cut Tape

HK$57.70

HK$56.14

Reel

HK$47.76

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 54 I/O Pins

ATMEGA645-16AU
Microchip Technology
1: HK$64.61
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

Datasheet

267In Stock

HK$64.61

HK$59.10

HK$53.59

Min.: 1
Mult.: 1

AVR

64 kB

4 kB

TQFP-64

16 MHz

10 bit

54 I/O

2.7 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

ATmega645

Tray

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

ATMEGA649A-AUR
Microchip Technology
1: HK$59.27
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

Datasheet

1,525In Stock

Cut Tape

HK$59.27

HK$57.62

Reel

HK$49.24

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 16MHz 105C

ATMEGA64A-ANR
Microchip Technology
1: HK$49.90
1,662In Stock

Mfr. Part No.
ATMEGA64A-ANR

Mouser Part No
556-ATMEGA64A-ANR

Microchip Technology

8-bit Microcontrollers - MCU 16MHz 105C

Learn More

Datasheet

1,662In Stock

Cut Tape

HK$49.90

HK$48.50

Reel

HK$41.35

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

+ 105 C

ATmega64A

Reel, Cut Tape, MouseReel

8-bit Microcontrollers - MCU 16MHz MLF 105C

ATMEGA64A-MN
Microchip Technology
1: HK$48.42
98In Stock

Mfr. Part No.
ATMEGA64A-MN

Mouser Part No
556-ATMEGA64A-MN

Microchip Technology

8-bit Microcontrollers - MCU 16MHz MLF 105C

Learn More

Datasheet

98In Stock

HK$48.42

HK$44.31

HK$40.03

Min.: 1
Mult.: 1

AVR

64 kB

4 kB

QFN-64

16 MHz

10 bit

53 I/O

2.7 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 105 C

ATmega64A

Tray

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

ATMEGA645P-MU
Microchip Technology
1: HK$57.79
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

Datasheet

1,300In Stock

HK$57.79

HK$52.94

HK$47.92

Min.: 1
Mult.: 1

AVR

64 kB

4 kB

QFN-64

16 MHz

10 bit

54 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

ATmega645P

Tray

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

ATMEGA644PV-10MU
Microchip Technology
1: HK$57.95
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

Datasheet

200In Stock

HK$57.95

HK$53.10

HK$48.00

Min.: 1
Mult.: 1

AVR

64 kB

4 kB

VQFN-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 64K FLASH 2K EE 4K SRAM ADC LCD

ATMEGA649-16MU
Microchip Technology
1: HK$78.67
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

Datasheet

258In Stock

HK$78.67

HK$72.17

HK$65.35

Min.: 1
Mult.: 1

AVR

64 kB

4 kB

MLF-64

16 MHz

10 bit

69 I/O

2.7 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-16MHz, 5V

ATMEGA645-16AUR
Microchip Technology
1: HK$66.09
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

Datasheet

748In Stock

Cut Tape

HK$66.09

HK$64.20

Reel

HK$54.91

Min.: 1
Mult.: 1

: 1,000

AVR

64 kB

4 kB

TQFP-64

16 MHz

10 bit

54 I/O

2.7 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

ATmega645

Reel, Cut Tape

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

ATMEGA64L-8AQR
Microchip Technology
1: HK$87.46
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

Datasheet

747In Stock

Cut Tape

HK$87.46

HK$85.32

Reel

HK$72.58

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

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

ATMEGA645A-AUR
Microchip Technology
1: HK$54.09
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

Datasheet

960In Stock

Cut Tape

HK$54.09

HK$52.77

Reel

HK$44.88

Min.: 1
Mult.: 1

: 1,000

AVR

TQFP-64

16 MHz

1.8 V

5.5 V

SMD/SMT

8 bit

ATmega645A

Reel, Cut Tape

8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC 1.8V

ATMEGA645V-8AU
Microchip Technology
1: HK$64.61
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

Datasheet

176In Stock

HK$64.61

HK$59.10

HK$53.59

Min.: 1
Mult.: 1

AVR

64 kB

4 kB

TQFP-64

8 MHz

10 bit

54 I/O

1.8 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

ATmega645

Tray

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

ATMEGA64A-AUR
Microchip Technology
1: HK$48.66
2,721In Stock
4,000Expected 2/10/2026

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

Datasheet

2,721In Stock

4,000Expected 2/10/2026

Cut Tape

HK$48.66

HK$47.43

Reel

HK$40.44

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

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

Reel, Cut Tape, MouseReel

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

ATMEGA64A-MUR
Microchip Technology
1: HK$48.66
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

Datasheet

6,275In Stock

Cut Tape

HK$48.66

HK$47.43

Reel

HK$40.44

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

AVR

64 kB

4 kB

VQFN-64

16 MHz

10 bit

53 I/O

2.7 V

5.5 V

SMD/SMT

8 bit

- 40 C

+ 85 C

ATmega64A

Reel, Cut Tape, MouseReel

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

ATMEGA64L-8MUR
Microchip Technology
1: HK$86.23
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

Datasheet

2,732In Stock

Cut Tape

HK$86.23

HK$84.09

Reel

HK$71.60

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

AVR

64 kB

4 kB

MLF-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 64kB Flash 4kB EEPROM 86 I/O Pins

ATMEGA640-16AU
Microchip Technology
1: HK$84.50
479In 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

Datasheet

479In Stock

HK$84.50

HK$77.51

HK$70.20

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-16MHZ 5V IND

ATMEGA640-16AUR
Microchip Technology
1: HK$86.15
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

Datasheet

679In Stock

Cut Tape

HK$86.15

HK$83.93

Reel

HK$71.51

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

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

Reel, Cut Tape, MouseReel

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

ATMEGA640V-8AUR
Microchip Technology
1: HK$86.15
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

Datasheet

872In Stock

Cut Tape

HK$86.15

HK$83.93

Reel

HK$71.51

Min.: 1
Mult.: 1

: 1,500

AVR

TQFP-100

8 MHz

1.8 V

5.5 V

SMD/SMT

8 bit

ATmega640

Reel, Cut Tape

8-bit Microcontrollers - MCU 20 MHz Ind Temp

ATMEGA644A-AU
Microchip Technology
1: HK$45.46
932In Stock
2,080Expected 28/9/2026

Mfr. Part No.
ATMEGA644A-AU

Mouser Part No
556-ATMEGA644A-AU

Microchip Technology

8-bit Microcontrollers - MCU 20 MHz Ind Temp

Learn More

Datasheet

932In Stock

2,080Expected 28/9/2026

HK$45.46

HK$41.59

HK$37.65

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

ATmega644PA 8-bit AVR® Microcontrollers

Customer Service Office

Company

Resources

Support