ATMEGA644PA AU TQFP 44 Pin Microcontroller SMD Package

ATMEGA644PA AU TQFP 44 Pin Microcontroller SMD Package 

The ATmega644PA-AU is a high-performance 8-bit AVR microcontroller manufactured by Atmel (now Microchip Technology). It belongs to the ATmega family and is designed for advanced embedded and industrial control applications requiring large program memory and multiple communication interfaces.

The microcontroller uses Harvard architecture with a RISC instruction set, enabling most instructions to execute in a single clock cycle. The “PA” suffix indicates picoPower technology, which provides ultra-low power consumption, making it ideal for energy-efficient designs.

The AU variant is available in a 44-pin TQFP SMD package, suitable for compact PCB layouts and surface-mount assembly.

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Features

• 8-bit AVR RISC CPU
• Operating voltage: 1.8 V – 5.5 V
• Maximum clock frequency: Up to 20 MHz
• Program memory: 64 KB Flash
• Data memory:
• 4 KB SRAM
• 2 KB EEPROM
• I/O pins: Up to 32 programmable digital I/O pins
• Timers/Counters:
• Two 8-bit timers
• Two 16-bit timers with PWM
• Analog features:
• 10-bit ADC with up to 8 channels
• Analog comparator
• Communication interfaces:
• Two USARTs
• SPI
• I²C (TWI)
• PWM channels
• Interrupt system with multiple sources
• Watchdog Timer (WDT)
• Advanced picoPower sleep modes
• In-System Programming (ISP)
• Package type: SMD TQFP-44 (AU)

Applications

• Industrial automation systems
• Embedded control units
• Data acquisition and monitoring systems
• Robotics and motion control
• Communication and networking devices
• Low-power battery-operated systems
• Consumer and commercial electronics