Microchip, 8bit AVR, ATmega Microcontroller, 20MHz, 64 kB Flash, 40-Pin PDIP

RS Stock No.:: 131-0322P
Mfr. Part No.:: ATMEGA644P-20PU
Brand:: Microchip

Microchip, 8bit AVR, ATmega Microcontroller, 20MHz, 64 kB Flash, 40-Pin PDIP

Bulk discount available

Subtotal 10 units (supplied in a tube)*

$119.20

(exc. GST)

$131.10

(inc. GST)

FREE delivery for orders over $60.00 ex GST

In Stock

Plus 170 unit(s) shipping from 08 December 2025

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

Units	Per unit
10 - 24	$11.92
25 +	$11.39

*price indicative

RS Stock No.:: 131-0322P
Mfr. Part No.:: ATMEGA644P-20PU
Brand:: 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
	Family Name	ATmega
	Package Type	PDIP
	Mounting Type	Through Hole
	Pin Count	40
	Device Core	AVR
	Data Bus Width	8bit
	Program Memory Size	64 kB
	Maximum Frequency	20MHz
	RAM Size	4 kB
	USB Channels	0
	Number of PWM Units	1
	Number of SPI Channels	3
	Number of CAN Channels	0
	Number of UART Channels	2
	Number of I2C Channels	1
	Number of USART Channels	2
	Typical Operating Supply Voltage	2.7 → 5.5 V
	Number of Ethernet Channels	0
	Number of PCI Channels	0
	Maximum Number of Ethernet Channels	0
	ADCs	8 x 10 bit
	Length	52.57mm
	Number of ADC Units	1
	Maximum Operating Temperature	+85 °C
	Program Memory Type	Flash
	Minimum Operating Temperature	-40 °C
	Instruction Set Architecture	RISC
	Pulse Width Modulation	1 (6 Channel)
	Dimensions	52.57 x 13.97 x 4.44mm
	Width	13.97mm
	Height	4.44mm
	Number of LIN Channels	0

	Select all
	Brand Microchip
	Family Name ATmega
	Package Type PDIP
	Mounting Type Through Hole
	Pin Count 40
	Device Core AVR
	Data Bus Width 8bit
	Program Memory Size 64 kB
	Maximum Frequency 20MHz
	RAM Size 4 kB
	USB Channels 0
	Number of PWM Units 1
	Number of SPI Channels 3
	Number of CAN Channels 0
	Number of UART Channels 2
	Number of I2C Channels 1
	Number of USART Channels 2
	Typical Operating Supply Voltage 2.7 → 5.5 V
	Number of Ethernet Channels 0
	Number of PCI Channels 0
	Maximum Number of Ethernet Channels 0
	ADCs 8 x 10 bit
	Length 52.57mm
	Number of ADC Units 1
	Maximum Operating Temperature +85 °C
	Program Memory Type Flash
	Minimum Operating Temperature -40 °C
	Instruction Set Architecture RISC
	Pulse Width Modulation 1 (6 Channel)
	Dimensions 52.57 x 13.97 x 4.44mm
	Width 13.97mm
	Height 4.44mm
	Number of LIN Channels 0

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, 8bit AVR, ATmega Microcontroller, 20MHz, 64 kB Flash, 40-Pin PDIP

FREE delivery for orders over $60.00 ex GST

8-Bit PicoPower megaAVR Family Microcontrollers

For these non-cancellable (NC), and non-returnable (NR) products, Terms and Conditions apply.

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