This document contains complete and detailed description of all modules included in
the AVR XMEGATM 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:
• AVR CPU
• Memories
• DMAC - Direct Memory Access Controller
• Event System
• System Clock and Clock options
• Power Management and Sleep Modes
• System Contrl and Reset
8-bit
XMEGA A
Microcontroller
• WDT - Watchdog Timer
• Interrupts and Programmable Multi-level Interrupt Controller
• I/O Ports
• TC - 16-bit Timer/Counter
• AWeX - Advanced Waveform Extension
• Hi-Res - High Resolution Extension
• RTC - Real Time Counter
XMEGA A
MANUAL
• TWI - Two Wire Serial Interface
• SPI - Serial Programmable Interface
• USART - Universal Synchronous and Asynchronous Serial Receiver and Transmitter
• IrCOM - IR Communication Module
• Crypto Engines
Preliminary
• EBI - External Bus Interface
• ADC - Analog to Digital Converter
• DAC - Digital to Analog Converter
• AC - Analog Comparator
• IEEE 1149.1 JTAG Boundary Scan Interface
• PDI - Program and Debug Interface
• Memory Programming
• Instruction Set Summary
8077B- AVR-06/08