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Manufacturer Part Number : ATMEGA644PA-AUR
Manufacturer : Microchip Technology
Description : MCU 8-bit AVR RISC 64KB Flash 2.5V/3.3V/5V 44-Pin TQFP T/R
Lead Free Status / RoHS Status : Lead free / RoHS Compliant
1 77 3525295 http://www.atmel.com/Images/Atmel-8272-8-bit-AVR-microcontroller-ATmega164A_PA-324A_PA-644A_PA-1284_P_summary.pdf Microchip-Technology/ATMEGA644PA-AUR 3525295

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Technical Parameters of ATMEGA644PA-AUR

Core Processor:AVR
Core Size:8-Bit
Peripherals:Brown-out Detect/Reset, POR, PWM, WDT
Program Memory Size:64KB (32K x 16)
Program Memory Type:FLASH
RAM Size:4K x 8
Voltage - Supply (Vcc/Vdd):1.8 V ~ 5.5 V
Oscillator Type:Internal
Operating Temperature:-40~C ~ 85~C (TA)
Package / Case:44-TQFP
Supplier Device Package:44-TQFP (10x10)

Product Details

Key Technical Features

  • Architecture: 8-bit AVR

  • Flash Memory: 64 KB

  • RAM: 4 KB

  • Operating Voltage: 1.8 V to 5.5 V

  • Number of I/O Pins: 32

  • ADC Channels: 8

  • Communication Interfaces: USART, SPI, I2C

  • Timers/Counters: 3

  • Clock Speed: Up to 20 MHz


The ATMEGA644PA-AUR offers a robust set of features, making it suitable for applications such as robotics, industrial control systems, home automation, and more. Its extensive range of peripherals, including multiple communication interfaces and timers, provides the flexibility needed for complex tasks.

This microcontroller is known for its low power consumption, enabling energy-efficient designs. The wide operating voltage range further enhances its versatility, allowing it to be integrated into diverse projects with varying power requirements.


  • Versatility: Suitable for a broad range of applications due to its rich feature set.

  • Reliability: Microchip's AVR microcontrollers are known for their reliability and stability.

  • Low Power Consumption: Enables energy-efficient designs, extending battery life in portable applications.

Microchip Technology ATMEGA644PA-AUR Stock and Price

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