Atmel XMEGA B User Manual

This document contains complete and detailed description of all modules included in the
® ® ®
Atmel AVR XMEGA B microcontroller family. The Atmel AVR XMEGA B is a family of low-
power, high-performance, and peripheral-rich CMOS 8/16-bit microcontrollers based on the
AVR enhanced RISC architecture with integrated LCD controller. The available Atmel AVR
XMEGA B 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

WDT - Watchdog timer

Interrupts and programmable multilevel interrupt controller
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PORT - I/O ports
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TC - 16-bit timer/counters

AWeX - Advanced waveform extension

Hi-Res - High resolution extension

RTC - Real-time counter

USB - Universal serial bus interface

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

CRC - Cyclic redundancy check

LCD - Liquid Crystal Display controller

ADC - Analog-to-digital 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 B Microcontroller
XMEGA B MANUAL
8291B- AVR-01/2013
8291B–AVR–01/2013