Features High-performance, low-power Atmel® AVR® XMEGA® 8/16-bit Microcontroller Nonvolatile program and data memories – 64K - 256KBytes of In-System Self-Programmable Flash – 4K - 8KBytes Boot Code Section with Independent Lock Bits – 2K - 4KBytes EEPROM – 4K - 16KBytes Internal SRAM Peripheral features – Four-channel event system – Five 16-bit timer/counters      Four timer/counters with four output compare or input capture channels      One timer/counter with two output compare or input capture channels      High resolution extension on two timer/counters      Advanced waveform extension (AWeX) on one timer/counter – One USB device interface      USB 2.0 full speed (12Mbps) and low speed (1.5Mbps) device compliant      32 Endpoints with full configuration flexibility – Three USARTs with IrDA support for one USART – Two two-wire interfaces with dual address match (I2C and SMBus compatible) – Two serial peripheral interfaces (SPIs) – CRC-16 (CRC-CCITT) and CRC-32 (IEEE®802.3) generator – 16-bit real time counter (RTC) with separate oscillator – One sixteen-channel, 12-bit, 300ksps Analog to Digital Converter – Two Analog Comparators with window compare function, and current sources – External interrupts on all general purpose I/O pins – Programmable watchdog timer with separate on-chip ultra low power oscillator – QTouch® library support      Capacitive touch buttons, sliders and wheels Special microcontroller features – Power-on reset and programmable brown-out detection – Internal and external clock options with PLL and prescaler – Programmable multilevel interrupt controller – Five sleep modes – Programming and debug interface      PDI (program and debug interface) I/O and packages – 50 programmable I/O pins – 64-lead TQFP – 64-pad QFN Operating voltage – 1.6 – 3.6V Operating frequency – 0 – 12MHz from 1.6V – 0 – 32MHz from 2.7V