The ATXMEGA64A3-AU is a low-power 8-bit microcontroller from Microchip's AVR family of microcontrollers. This microcontroller features 64KB flash memory, 512B SRAM, and 64B EEPROM, as well as 16 natively-supported USARTs, 2 real-time clocks, an analog comparator, and on-chip voltage regulators. The ATXMEGA64A3-AU also includes several advanced peripherals like a low power oscillator, a sleep and wake-up feature, and an InsightICE embedded logic analyzer. The ATXMEGA64A3-AU is ideal for applications requiring a low power 8-bit microcontroller with ample peripherals and flash memory.