ATXMEGA64A3-MH

Overview

The ATXMEGA64A3-MH is an 8/16-bit AVR XMEGA microcontroller featuring a 64 KB Flash program memory, 2 KB EEPROM, and 4 KB SRAM. It operates within a voltage range of 1.6 V to 3.6 V and supports clock speeds up to 32 MHz at 2.7–3.6 V. The device includes a four-channel DMA controller, eight-channel event system, seven 16-bit timers/counters, seven USARTs, AES/DES crypto engine, two 12-bit ADCs, one 12-bit DAC, and five analog comparators. It provides 50 programmable I/O lines and is housed in a 64-pad QFN package.

Feature Summary

• Integrates a high-performance 8/16-bit AVR RISC CPU with single-cycle execution capabilities.
• Includes a four-channel Direct Memory Access (DMA) controller for autonomous data transfers between memories and peripherals.
• Features an eight-channel Event System for low-latency inter-peripheral communication without CPU intervention.
• Provides hardware security through integrated AES and DES cryptographic engines.

Applications

• Industrial control systems
• Factory automation equipment
• Medical devices
• HVAC and climate control units

Procurement Notes

Verify the component datasheet against the manufacturer's official documentation to confirm specifications. Ensure compatibility with existing design constraints regarding the QFN-64 package dimensions and thermal requirements. Confirm that the specific ordering suffix matches the required packaging format. Validate that the device meets all necessary regulatory standards for the intended application environment.

Selection Notes

This component belongs to the XMEGA A3 family, which is explicitly noted as not recommended for new designs. Engineers should evaluate the XMEGA A3U series as the designated successor for future projects. Consider the available development tools and programming interfaces when integrating this MCU into a system architecture.

Part Context

The ATXMEGA64A3-MH is part of the Microchip Technology AVR XMEGA A3 microcontroller family. This series is characterized by its combination of high processing performance and low power consumption. The device utilizes CMOS technology and features extensive peripheral integration suitable for complex embedded applications requiring robust connectivity and processing capabilities.

Replacement Considerations

Microchip Technology recommends using the XMEGA A3U series as a replacement for new designs. Verify pinout compatibility and peripheral availability when migrating from the A3 to the A3U series to ensure seamless integration.