Datasheet

2018 Microchip Technology Inc. Data Sheet Complete DS40002058A-page 1
Features
High-performance, low-power AVR
®
XMEGA
®
8/16-bit Microcontroller
Nonvolatile program and data memories
64K - 128KBytes of in-system self-programmable flash
4K - 8KBytes boot section
2KBytes EEPROM
4K - 8KBytes internal SRAM
External bus interface for up to 16Mbytes SRAM
External bus interface for up to 128Mbit SDRAM
Peripheral features
Four-channel DMA controller
Eight-channel event system
Eight 16-bit timer/counters
Four timer/counters with 4 output compare or input capture channels
Four timer/counters with 2 output compare or input capture channels
High resolution extension on all timer/counters
Advanced waveform extension (AWeX) on two timer/counters
One USB device interface
USB 2.0 full speed (12Mbps) and low speed (1.5Mbps) device compliant
32 Endpoints with full configuration flexibility
Eight USARTs with IrDA support for one USART
Four two-wire interfaces with dual address match (I
2
C and SMBus compatible)
Four serial peripheral interfaces (SPIs)
AES and DES crypto engine
XMEGA
®
A1U Data Sheet
ATxmega128A1U/ATxmega64A1U
Introduction
The AVR
®
XMEGA
®
AU is a family of low power, high performance, and peripheral rich 8/16-bit microcon-
trollers based on the AVR enhanced RISC architecture. The XMEGA A1U is a 100-pins device ranging
from 64KB to 128KB Flash, with 4KB to 8KB SRAM, 2KB EEPROM and up to 8KB boot section. The
ATxmegaA1U devices operate at a maximum frequency of 32MHz. By executing instructions in a single
clock cycle, the devices achieve CPU throughput approaching one million instructions per second (MIPS)
per megahertz, allowing the system designer to optimize power consumption versus processing speed.

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