ATXMEGA256A3U Datasheet, PDF (1/116 Pages) ATMEL Corporation – 8/16-bit Atmel XMEGA A3U Microcontroller

Features
• High-performance, Low-power Atmel^® AVR^® XMEGA^® 8/16-bit Microcontroller
• Non-volatile Program and Data Memories
– 64K - 256KBytes of In-System Self-Programmable Flash
– 4K - 8KBytes Boot Section
– 2K - 4KBytes EEPROM
– 4K - 16KBytes Internal SRAM
• Peripheral Features
– Four-channel DMA Controller
– Eight-channel Event System
– Seven 16-bit Timer/Counters
Four Timer/Counters with 4 Output Compare or Input Capture channels
Three Timer/Counters with 2 Output Compare or Input Capture channels
High Resolution Extensions on all Timer/Counters
Advanced Waveform Extension 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
– Seven USARTs with IrDA support for one USART
– AES and DES Crypto Engine
– CRC-16 (CRC-CCITT) and CRC-32 (IEEE 802.3) Generator
– Two Two-wire Interfaces with dual address match (I²C and SMBus compatible)
– Three Serial Peripheral Interfaces (SPIs)
– 16-bit Real Time Counter with Separate Oscillator
– Two Eight-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 source
feature
– 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
Up to 64 sense channels
• Special Microcontroller Features
– Power-on Reset and Programmable Brown-out Detection
– Internal and External Clock Options with PLL
– Programmable Multi-level Interrupt Controller
– Five Sleep Modes
– Programming and Debug Interfaces
JTAG (IEEE 1149.1 Compliant) Interface, including Boundary Scan
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
Typical Applications
• Industrial control
• Factory automation
• Building control
• Board control
• White goods
• Climate control
• RF and ZigBee
• USB connectivity
• Sensor control
• Optical
• Low power battery applications
• Power tools
• HVAC
• Utility metering
• Medical applications
8/16-bit Atmel
XMEGA A3U
Microcontroller
ATxmega256A3U
ATxmega192A3U
ATxmega128A3U
ATxmega64A3U
Preliminary
8386A–AVR–07/11