8/16-bit Atmel XMEGA A3U Microcontroller ATxmega256A3U / ATxmega192A3U / ATxmega128A3U / ATxmega64A3U DATASHEET Features z High-performance, low-power Atmel AVR XMEGA 8/16-bit Microcontroller z Nonvolatile program and data memories 64K - 256KBytes of in-system self-programmable flash 4K - 8KBytes boot section 2K - 4KBytes EEPROM 4K - 16KBytes internal SRAM z Peripheral features Four-channel DMA controller Eight-channel event system Seven 16-bit timer/counters z Four timer/counters with four output compare or input capture channels z Three timer/counters with two output compare or input capture channels z High resolution extension on all timer/counters z Advanced waveform extension (AWeX) on one timer/counter One USB device interface z USB 2.0 full speed (12Mbps) and low speed (1.5Mbps) device compliant z 32 Endpoints with full configuration flexibility Seven USARTs with IrDA support for one USART 2 Two two-wire interfaces with dual address match (I C and SMBus compatible) Three serial peripheral interfaces (SPIs) AES and DES crypto engine CRC-16 (CRC-CCITT) and CRC-32 (IEEE 802.3) generator 16-bit real time counter (RTC) with separate oscillator Two sixteen-channel, 12-bit, 2msps Analog to Digital Converters One two-channel, 12-bit, 1msps Digital to Analog Converter Four 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 z Capacitive touch buttons, sliders and wheels z 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 Atmel-8386E-AVR-XMEGA A3U-Datasheet 09/2014 Programming and debug interfaces z JTAG (IEEE 1149.1 compliant) interface, including boundary scan z PDI (program and debug interface) z I/O and packages 50 Programmable I/O pins 64-lead TQFP 64-pad QFN z Operating voltage 1.6 3.6V z Operating frequency 0 12MHz from 1.6V 0 32MHz from 2.7V XMEGA A3U DATASHEET 2 Atmel-8386E-AVR-XMEGA A3U-Datasheet 09/2014