ATXMEGA64A1U-AUR

Overview

The ATXMEGA64A1U-AUR is an 8/16-bit microcontroller from the AVR XMEGA A1U family, manufactured by Microchip Technology. It features a 32 MHz maximum clock frequency and operates within a supply voltage range of 1.6 V to 3.6 V. The device includes 64 KB of in-system self-programmable flash memory, 4 KB of internal SRAM, and 2 KB of EEPROM. It provides 78 programmable I/O pins and utilizes a 100-lead TQFP package (100A). Key peripherals include a four-channel DMA controller, eight-channel event system, USB 2.0 full-speed interface, AES/DES crypto engine, two 16-channel 12-bit ADCs, and four USARTs.

Feature Summary

• Integrates a high-performance AVR CPU with single-cycle instruction execution for optimized power consumption versus processing speed.
• Includes a dedicated USB 2.0 full-speed device interface supporting up to 32 endpoints with flexible configuration.
• Features a four-channel Direct Memory Access (DMA) controller and an eight-channel event system for efficient data transfer without CPU intervention.
• Provides hardware security through an integrated AES and DES cryptographic engine alongside CRC-16 and CRC-32 generators.

Applications

• USB connectivity applications
• Industrial control systems
• Factory automation equipment
• Low power battery operated devices

Procurement Notes

Verify the specific ordering suffix 'AUR' corresponds to the Tape and Reel packaging format as defined in the official Microchip datasheet. Confirm that the component meets RoHS compliance requirements if applicable to your manufacturing standards. Ensure compatibility with the 100-lead TQFP footprint during PCB layout. Cross-reference the latest revision history for any silicon errata or design changes affecting this specific part number before finalizing procurement.

Selection Notes

Select this component when a balance of moderate program memory size and extensive peripheral integration is required. The inclusion of a native USB interface makes it suitable for communication-heavy designs without external transceivers. Consider the 100-pin package constraints regarding board space and routing complexity. Evaluate the 1.6V to 3.6V operating range against your system's power supply architecture to ensure stable operation across all environmental conditions.

Part Context

This device belongs to the AVR XMEGA A1U series, which is characterized by low power consumption and high performance. It shares architectural similarities with other members like the ATXMEGA128A1U but offers reduced memory capacity. The AU suffix indicates industrial temperature range capabilities. This family is designed for embedded applications requiring robust analog and digital peripherals within a compact form factor.

Replacement Considerations

The ATXMEGA64A1U-AU is a pin-compatible alternative available in Tray packaging. For higher memory capacity, the ATXMEGA128A1U-AUR serves as a direct upgrade within the same package. Note that older non-U variants may have different thermal or electrical characteristics and should be evaluated carefully for drop-in replacement scenarios.