ATXMEGA64A3U-MN

Overview

The ATXMEGA64A3U-MN is an 8/16-bit AVR XMEGA microcontroller featuring 64KB of in-system self-programmable flash, 2KB EEPROM, and 4KB internal SRAM. It operates at frequencies up to 32MHz within a 1.6V to 3.6V supply range. The device includes a four-channel DMA controller, eight-channel event system, seven 16-bit timer/counters, one USB 2.0 full-speed interface, seven USARTs, two TWI interfaces, three SPIs, AES/DES crypto engine, two 16-channel 12-bit ADCs, one 2-channel 12-bit DAC, and four analog comparators. It utilizes a 64-pad QFN package.

Feature Summary

• Integrates a high-performance AVR RISC CPU with hardware multiplier for efficient arithmetic operations.
• Provides advanced peripheral connectivity including USB 2.0, multiple serial interfaces, and cryptographic engines.
• Supports low-power operation through five selectable sleep modes and programmable brown-out detection.
• Features an eight-channel event system and four-channel DMA controller for direct peripheral-to-peripheral communication.

Applications

• Industrial control systems
• Factory automation equipment
• Building control applications
• Medical devices
• Utility metering

Procurement Notes

Verify the specific ordering code suffix against official Microchip documentation to confirm package type and temperature rating. Confirm current production status as availability may vary. Ensure compatibility with existing design constraints regarding voltage levels and pin configurations before procurement.

Selection Notes

Select this component for designs requiring integrated USB connectivity alongside robust analog processing capabilities. The inclusion of dedicated hardware cryptographic engines makes it suitable for secure data transmission applications. Evaluate memory requirements against the available 64KB flash and 4KB SRAM to ensure sufficient capacity for application logic and data storage.

Part Context

This part belongs to the AVR XMEGA A3U family, designed for high-performance embedded applications. It combines the efficiency of the AVR architecture with rich peripheral sets and low power consumption. The A3U series specifically targets applications needing flexible I/O, advanced timing control, and secure communication protocols.

Replacement Considerations

Consult official Microchip documentation for verified substitute part numbers. Cross-reference memory sizes, package dimensions, and operating voltage ranges when evaluating alternatives.