Features High-performance, Low-power 8/16-bit Atmel® AVR® XMEGATM Microcontroller Non-volatile Program and Data Memories – 64K - 256K Bytes of In-System Self-Programmable Flash – 4K - 8K Bytes Boot Code Section with Independent Lock Bits – 2K - 4K Bytes EEPROM – 4K - 16K Bytes Internal SRAM Peripheral Features – Four-channel Event System – Five 16-bit Timer/Counters      Four Timer/Counters with 4 Output Compare or Input Capture channels      One Timer/Counters with 2 Output Compare or Input Capture channels      High Resolution Extensions on two Timer/Counters      Advanced Waveform Extension on one Timer/Counter – Three USARTs      IrDA Extension on 1 USART – Two Two-Wire Interfaces with dual address match(I2C and SMBus compatible) – Two SPI (Serial Peripheral Interfaces) – 16-bit Real Time Counter with Separate Oscillator – One Sixteen-channel, 12-bit, 200ksps Analog to Digital Converter – Two Analog Comparators with Window compare function – External Interrupts on all General Purpose I/O pins – Programmable Watchdog Timer with Separate On-chip Ultra Low Power Oscillator Special Microcontroller Features – Power-on Reset and Programmable Brown-out Detection – Internal and External Clock Options with PLL – Programmable Multi-level Interrupt Controller – Sleep Modes: Idle, Power-down, Standby, Power-save, Extended Standby – Advanced Programming, Test and Debugging Interface      PDI (Program and Debug Interface) for programming, test and debugging I/O and Packages – 50 Programmable I/O Lines – 64-lead TQFP – 64-pad QFN Operating Voltage – 1.6 – 3.6V Speed performance – 0 – 12 MHz @ 1.6 – 3.6V – 0 – 32 MHz @ 2.7 – 3.6V