The ATXMEGA128A3U-AU is a high performance, low power AVR XMEGA A3U 8/16bit microcontroller in 64 pin TQFP package. The device has four analogue comparators, one two channel, 12bit digital to analogue converter, two sixteen channel, 12bit analogue to digital converters, 16bit real time counter (RTC) with separate oscillator and seven 16bit timer/counters. 128KB of in-system self programmable flash 2KB of EEPROM and 8KB of internal SRAM Operating voltage range from 1.6V to 3.6V Operating frequency of 32MHz 50 programmable I/O pins QTouch library support