ATXMEGA64A3-AU

Overview

The ATXMEGA64A3-AU is an 8/16-bit AVR XMEGA microcontroller featuring a 32 MHz CPU, 64 KB Flash, 4 KB SRAM, and 2 KB EEPROM. It operates at 1.6V to 3.6V with five sleep modes. Key peripherals include a four-channel DMA controller, eight-channel event system, seven 16-bit timers, seven USARTs, AES/DES crypto engine, two 12-bit ADCs, one 12-bit DAC, and four analog comparators. It provides 50 programmable I/O lines in a 64-lead TQFP package.

Feature Summary

• Integrates a high-performance 8/16-bit AVR RISC CPU with hardware multiplier for efficient instruction execution.
• Includes a four-channel DMA controller and an eight-channel event system for autonomous peripheral communication.
• Features robust security with an integrated AES and DES cryptographic engine.
• Supports flexible data conversion via dual 12-bit ADCs and a dual-channel 12-bit DAC.

Applications

• Industrial control systems
• Factory automation equipment
• Medical devices
• Hand-held battery applications

Procurement Notes

Verify component authenticity through authorized Microchip Technology distributors or direct channels. Confirm the specific ordering code matches the required package and temperature range. Review the official datasheet for any recent production change notices regarding pinout or electrical characteristics before finalizing procurement specifications.

Selection Notes

Select this component for designs requiring high peripheral density and low power consumption within the AVR XMEGA A3 family. Note that the manufacturer recommends using the XMEGA A3U series for new designs. Ensure the application voltage falls within the 1.6V to 3.6V range and verify that the 64-TQFP package fits the board layout constraints.

Part Context

This device belongs to the Atmel AVR XMEGA A3 microcontroller family, manufactured by Microchip Technology. It utilizes CMOS technology and supports In-System Self-Programming. The part number suffix 'AU' indicates the 64-lead Thin Profile Plastic Quad Flat Package (TQFP) variant suitable for surface mount assembly.

Replacement Considerations

Microchip Technology explicitly recommends using the XMEGA A3U series for new designs instead of the A3 series. Verify compatibility if substituting with other members of the A3 family, such as ATXMEGA128A3-AU, noting differences in memory size.