Atmel XMEGA B User Manual
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8291B–AVR–01/2013
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
PORT - I/O ports
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
8291B- AVR-01/2013
8-bit Atmel XMEGA B Microcontroller
XMEGA B MANUAL