ATXMEGA64A1U-AN

Overview

The ATXMEGA64A1U-AN is an 8/16-bit microcontroller from the AVR XMEGA A1U family, manufactured by Microchip Technology. It features 64KB of in-system self-programmable flash memory, 2KB of EEPROM, and 4KB of internal SRAM. The device operates on a supply voltage ranging from 1.6V to 3.6V and supports a maximum clock frequency of 32MHz. It is housed in a 100-lead TQFP package with an operating temperature range of -40°C to 105°C.

Feature Summary

• High-performance AVR CPU executing instructions in a single clock cycle for optimized power consumption versus processing speed.
• Integrated USB 2.0 full-speed device interface compliant with low-speed operation requirements.
• Advanced peripheral set including four-channel DMA controller, eight-channel event system, and AES/DES cryptographic engine.
• Capacitive touch sensing support via QTouch library integration for buttons, sliders, and wheels.

Applications

• Industrial control systems
• Building and climate control units
• Utility metering applications
• Medical devices

Procurement Notes

Verify the specific ordering suffix AN against official Microchip documentation to confirm the 100-lead TQFP package and industrial temperature rating (-40°C to 105°C). Ensure compatibility with existing PCB footprints for the 100A package type. Confirm RoHS compliance status through current datasheet revisions before finalizing procurement specifications.

Selection Notes

Select this component when application requirements demand high I/O count (78 pins) combined with robust connectivity options like USB and multiple serial interfaces. The extended temperature range makes it suitable for environments exceeding standard commercial limits. Consider the available memory sizes relative to software stack requirements and the need for real-time counter functionality.

Part Context

This part belongs to the AVR XMEGA A1U series, designed for low-power, high-performance embedded applications. The AU designation indicates the use of picoPower technology, ensuring consistent low-power characteristics across varying memory sizes within the family. It serves as a scalable solution for designs requiring significant processing power without excessive energy consumption.

Replacement Considerations

ATXMEGA64A1U-AU

FAQ

What programming interfaces are supported by the ATXMEGA64A1U-AN?

The device supports the Program and Debug Interface (PDI), a fast two-pin interface, as well as an IEEE 1149.1 compliant JTAG interface for boundary scan, on-chip debug, and programming.

Does the ATXMEGA64A1U-AN include hardware encryption capabilities?

Yes, the microcontroller integrates an AES and DES cryptographic engine to handle data security requirements directly in hardware.