The MICROCHIP TECH. part ATMEGA644PA-AUR is a powerful 8-bit AVR RISC microcontroller that features 64KB of Flash memory. It operates on multiple voltage levels, including 2.5V, 3.3V, and 5V. With its 44-Pin TQFP package and availability in Tape&Reel packaging, it is convenient for high volume production. This MCU is an ideal choice for various applications requiring reliable performance and low power consumption.