The MICROCHIP TECH. part ATXMEGA256A3U-AUR is a powerful microcontroller unit (MCU) with an 8-bit/16-bit AVR RISC architecture. It features 256KB of Flash memory, 16KB of SRAM, and 4KB of EEPROM, providing ample storage for your applications. With a clock speed of 32MHz, this MCU offers fast and efficient performance.Designed to withstand extreme temperatures, the ATXMEGA256A3U-AUR operates in a wide temperature range of -40°C to +85°C. It supports three different voltage options (1.8V/2.5V/3.3V) to accommodate various power supply requirements.This MCU comes in a compact and convenient 64-Pin TQFP package, which is ideal for space-constrained designs. It is supplied in Tape&Reel packaging, ensuring easy handling and protection during shipping.Overall, the ATXMEGA256A3U-AUR is a versatile and reliable microcontroller that caters to a wide range of industrial, automotive, and consumer electronics applications.