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8077I–AVR–11/2012
This document contains complete and detailed description of all modules included in the
Atmel
®
AVR
®
XMEGA
®
A microcontroller family. The XMEGA A is a family of low-power, high-
performance, and peripheral-rich CMOS 8/16-bit microcontrollers based on the AVR enhanced
RISC architecture. The available XMEGA A modules described in this manual are:
• Atmel AVR CPU
• Memories
• DMAC - Direct memory access controller
• Event system
• System clock and clock options
• Power management and sleep modes
• System control and reset
• Battery backup system
• WDT - Watchdog timer
• Interrupts and programmable multilevel interrupt controller
• PORT - I/O ports
• TC - 16-bit timer/counters
• AWeX - Advanced waveform extension
• Hi-Res - High resolution extension
• RTC - Real-time counter
• RTC32 - 32-bit real-time counter
• TWI - Two-wire serial interface
• SPI - Serial peripheral interface
• USART - Universal synchronous and asynchronous serial receiver and transmitter
• IRCOM - Infrared communication module
• AES and DES cryptographic engine
• EBI - External bus interface
• ADC - Analog-to-digital converter
• DAC - Digital-to-analog converter
• AC - Analog comparator
• IEEE 1149.1 JTAG interface
• PDI - Program and debug interface
• Memory programming
• Peripheral address map
• Register summary
• Interrupt vector summary
• Instruction set summary
8-bit Atmel XMEGA A Microcontroller
XMEGA A MANUAL
