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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Qty. RoHS ECAD Model 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
Microchip Technology 8-bit Microcontrollers - MCU 16 MHz, 85DEG
Datasheet
24,818In Stock
$6.89
$6.32
$5.74
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
Microchip Technology 8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE-20MHZ 5V IND
Datasheet
6,306In Stock
Cut Tape
$7.02
$6.83
Reel
$5.81
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
Microchip Technology 8-bit Microcontrollers - MCU 20 MHz Ind Temp
Datasheet
558In Stock
Cut Tape
$5.67
$5.54
Reel
$4.71
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
Microchip Technology 8-bit Microcontrollers - MCU 20 MHz Ind Temp
Datasheet
371In Stock
$5.53
$5.06
$4.58
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
Microchip Technology 8-bit Microcontrollers - MCU AVR 64 KB FL 2 KB EE 4KB RAM 16 MHZ GRN
Datasheet
342In Stock
$6.78
$6.20
$5.62
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
Microchip Technology 8-bit Microcontrollers - MCU 64kB Flash 2kB EEPROM 54 I/O Pins
Datasheet
266In Stock
$7.86
$7.19
$6.52
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

Microchip Technology 8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-8MHz, IND
Datasheet
2,732In Stock
Cut Tape
$10.49
$10.23
Reel
$8.71
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
Microchip Technology 8-bit Microcontrollers - MCU 16 MHz, 105C, Green, TQFP
Datasheet
735In Stock
$6.72
$6.15
$5.57
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
Microchip Technology 8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM
Datasheet
200In Stock
$7.05
$6.46
$5.84
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

Microchip Technology 8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz, IND
Datasheet
1,300In Stock
$7.03
$6.44
$5.83
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
Microchip Technology 8-bit Microcontrollers - MCU 16MHz MLF 105C
Datasheet
98In Stock
$5.89
$5.39
$4.87
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
Microchip Technology 8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-8MHz, EXT
Datasheet
707In Stock
Cut Tape
$10.64
$10.38
Reel
$8.83
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
Microchip Technology 8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-20MHz, IND
Datasheet
824In Stock
Cut Tape
$6.58
$6.42
Reel
$5.46
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
Microchip Technology 8-bit Microcontrollers - MCU 16MHz 105C
Datasheet
1,662In Stock
Cut Tape
$6.07
$5.90
Reel
$5.03
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
Microchip Technology 8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz, 5V
Datasheet
748In Stock
Cut Tape
$8.04
$7.81
Reel
$6.68
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
Microchip Technology 8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM LCD16MHz,5
Datasheet
1,300In Stock
Cut Tape
$9.76
$9.54
Reel
$8.11
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
Microchip Technology 8-bit Microcontrollers - MCU AVR 64K FLASH 2K EE 4K SRAM ADC 1.8V
Datasheet
176In Stock
$7.86
$7.19
$6.52
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
Microchip Technology 8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB RAM-20MHz IND
Datasheet
4,034In Stock
Cut Tape
$6.60
$6.45
Reel
$5.48
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
Microchip Technology 8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz IND
Datasheet
6,595In Stock
Cut Tape
$5.92
$5.77
Reel
$4.92
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

Microchip Technology 8-bit Microcontrollers - MCU AVR 64KB FLSH 2KB EE 4KB SRAM-16MHz, IND
Datasheet
5,125In Stock
Cut Tape
$5.92
$5.77
Reel
$4.92
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
Microchip Technology 8-bit Microcontrollers - MCU AVR 64K FLSH 8K SRAM 4KB EE-16MHZ 5V IND
Datasheet
669In Stock
Cut Tape
$10.48
$10.21
Reel
$8.70
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
Microchip Technology 8-bit Microcontrollers - MCU AVR 64K FLSH 8K SRAM 4KB EE-8MHZ 1.8V IND
Datasheet
872In Stock
Cut Tape
$10.48
$10.21
Reel
$8.70
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
Microchip Technology 8-bit Microcontrollers - MCU 20 MHz Ind Temp
Datasheet
2,373In Stock
$5.53
$5.06
$4.58
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
Microchip Technology 8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE 20MHZ 5V
Datasheet
516In Stock
$7.05
$6.46
$5.84
Min.: 1
Mult.: 1
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 ATmega644P Tray
Microchip Technology 8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE 20MHZ 5V
Datasheet
275In Stock
$7.49
$6.86
$6.22
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 ATmega644P Tube