Features TM High-performance, Low-power 8/16-bit Atmel AVR XMEGA Microcontroller Non-volatile Program and Data Memories 256 KB of In-System Self-Programmable Flash 8 KB Boot Code Section with Independent Lock Bits 4 KB EEPROM 16 KB Internal SRAM Peripheral Features Four-channel DMA Controller with support for external requests Eight-channel Event System Seven 16-bit Timer/Counters 8/16-bit Four Timer/Counters with 4 Output Compare or Input Capture channels XMEGA A3B Three Timer/Counters with 2 Output Compare or Input Capture channels High-Resolution Extension on all Timer/Counters Microcontroller Advanced Waveform Extension on one Timer/Counter Six USARTs IrDA modulation/demodulation for one USART 2 Two Two-Wire Interfaces with dual address match (I C and SMBus compatible) ATxmega256A3B Two SPI (Serial Peripheral Interface) peripherals AES and DES Crypto Engine 32-bit Real Time Counter with separate Oscillator and Battery Backup System Two Eight-channel, 12-bit, 2 Msps Analog to Digital Converters Preliminary One Two-channel, 12-bit, 1 Msps Digital to Analog Converters Four 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 Not recommended for Special Microcontroller Features new designs - Use Power-on Reset and Programmable Brown-out Detection ATxmega256A3BU 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 Interfaces JTAG (IEEE 1149.1 Compliant) Interface for test, debug and programming PDI (Program and Debug Interface) for programming and debugging I/O and Packages 49 Programmable I/O Lines 64-lead TQFP 64-pad QFN/MLF Operating Voltage 1.6 3.6V Speed performance 0 12 MHz 1.6 3.6V 0 32 MHz 2.7 3.6V Typical Applications Industrial control Climate control Hand-held battery applications Factory automation ZigBee Power tools Building control Motor control HVAC Board control Networking Metering White Goods Optical Medical Applications 8116JAVR06/2013 Not recommended for new designs - Use ATxmega256A3BUXMEGA A3B 1. Ordering Information 2 (1)(2)(3) Ordering Code Flash E SRAM Speed (MHz) Power Supply Package Temp ATxmega256A3B-AU 256 KB + 8 KB 4 KB 16 KB 32 1.6 - 3.6V 64A -40 C - 85 C ATxmega256A3B-MH 256 KB + 8 KB 4 KB 16 KB 32 1.6 - 3.6V 64M2 Notes: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information. 2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green. 3. For packaging information, see Electrical Characteristics on page 64. Package Type 64-Lead, 14 x 14 mm Body Size, 1.0 mm Body Thickness, 0.8 mm Lead Pitch, Thin Profile Plastic Quad Flat Package (TQFP) 64A 64-Pad, 9 x 9 x 1.0 mm Body, Lead Pitch 0.50 mm, 7.65 mm Exposed Pad, Micro Lead Frame Package (MLF) 64M2 2 Not recommended for new designs - 8116JAVR06/2013 Use ATxmega256A3BU