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Microchip ATMEGA644PA-AU, 8 bit AVR, megaAVR Microcontroller, 20 MHz, 64kB FLASH, 44-Pin TQFP

RS Stock No.:: 131-0323
Distrelec Article No.:: 301-13-663
Mfr. Part No.:: ATMEGA644PA-AU
Manufacturer:: Microchip

Microchip ATMEGA644PA-AU, 8 bit AVR, megaAVR Microcontroller, 20 MHz, 64kB FLASH, 44-Pin TQFP

This image is representative of the product range

Bulk discount available

Subtotal (1 unit)*

SGD8.46

(exc. GST)

SGD9.22

(inc. GST)

FREE delivery for orders over $150, or create a business account to enjoy free delivery from just $28

In Stock

Plus 152 unit(s) shipping from 16 December 2025

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit
1 - 24	SGD8.46
25 - 99	SGD8.21
100 +	SGD7.95

*price indicative

RS Stock No.:: 131-0323
Distrelec Article No.:: 301-13-663
Mfr. Part No.:: ATMEGA644PA-AU
Manufacturer:: Microchip

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Microchip
	Product Type	Microcontroller
	Series	megaAVR
	Package Type	TQFP
	Mount Type	Surface
	Pin Count	44
	Device Core	AVR
	Data Bus Width	8bit
	Program Memory Size	64kB
	Interface Type	SPI, USART
	Maximum Clock Frequency	20MHz
	RAM Size	4kB
	Maximum Supply Voltage	5.5V
	Minimum Operating Temperature	-40°C
	Analogue Comparators	1
	Number of Programmable I/Os	32
	Maximum Operating Temperature	85°C
	Length	10.1mm
	Width	10.1 mm
	Height	1.05mm
	Standards/Approvals	No
	Minimum Supply Voltage	1.8V
	Instruction Set Architecture	RISC
	Automotive Standard	No
	ADCs	8 x 10 Bit
	Program Memory Type	FLASH
	Number of Timers	2
	Distrelec Product Id	30113663

	Select all
	Brand Microchip
	Product Type Microcontroller
	Series megaAVR
	Package Type TQFP
	Mount Type Surface
	Pin Count 44
	Device Core AVR
	Data Bus Width 8bit
	Program Memory Size 64kB
	Interface Type SPI, USART
	Maximum Clock Frequency 20MHz
	RAM Size 4kB
	Maximum Supply Voltage 5.5V
	Minimum Operating Temperature -40°C
	Analogue Comparators 1
	Number of Programmable I/Os 32
	Maximum Operating Temperature 85°C
	Length 10.1mm
	Width 10.1 mm
	Height 1.05mm
	Standards/Approvals No
	Minimum Supply Voltage 1.8V
	Instruction Set Architecture RISC
	Automotive Standard No
	ADCs 8 x 10 Bit
	Program Memory Type FLASH
	Number of Timers 2
	Distrelec Product Id 30113663

8-Bit PicoPower megaAVR Family Microcontrollers

This range of megaAVR microcontrollers feature picoPower technology — perfect for energy saving. They offer generous program and data memories with performance of up to 20 MIPS.

Features & Benefits of picoPower megaAVR microcontrollers

•On-chip Flash

•SRAM

•Internal EEPROM

•SPI

•TWI (I²C)

•USART, USB, CAN & LIN interfaces

•Watchdog timer

•Precision oscillator

•GPIO pins

•ADC

•DAC

•Built-in temperature sensor

•Internal voltage reference

•Brown-out detector

Microchip ATMEGA644PA-AU, 8 bit AVR, megaAVR Microcontroller, 20 MHz, 64kB FLASH, 44-Pin TQFP

FREE delivery for orders over $150, or create a business account to enjoy free delivery from just $28

8-Bit PicoPower megaAVR Family Microcontrollers

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