Microchip ATMEGA644P-20PU, 8 bit AVR, ATMEGA644P Microcontroller, 20 MHz, 64kB FLASH, 40-Pin PDIP

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Subtotal (1 unit)*

TWD242.00

(exc. GST)

TWD254.10

(inc. GST)

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  • Plus 19 unit(s) shipping from January 12, 2026
  • Plus 170 unit(s) shipping from January 19, 2026
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Packaging Options:
RS Stock No.:
131-0322
Distrelec Article No.:
173-25-149
Mfr. Part No.:
ATMEGA644P-20PU
Manufacturer:
Microchip
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Brand

Microchip

Series

ATMEGA644P

Product Type

Microcontroller

Package Type

PDIP

Mount Type

Through Hole

Pin Count

40

Device Core

AVR

Data Bus Width

8bit

Program Memory Size

64kB

Maximum Clock Frequency

20MHz

RAM Size

4kB

Maximum Supply Voltage

5.5V

Number of Programmable I/Os

32

Minimum Operating Temperature

-40°C

Analogue Comparators

1

Maximum Operating Temperature

85°C

Standards/Approvals

No

Width

13.97 mm

Height

4.44mm

Length

52.57mm

Minimum Supply Voltage

2.7V

ADCs

8 x 10 Bit

Automotive Standard

No

Instruction Set Architecture

RISC

Number of Timers

2

Program Memory Type

FLASH

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

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