ATXMEGA64A1U-CUR

Overview

The ATXMEGA64A1U-CUR is a low-power, high-performance 8/16-bit microcontroller based on the AVR XMEGA architecture. It features 64KB of in-system self-programmable flash with read-while-write capabilities, 2KB EEPROM, and 4KB internal SRAM. The device includes a four-channel DMA controller, an eight-channel event system, and up to 78 programmable I/O pins. Key peripherals include one USB 2.0 full-speed interface, eight USARTs, four TWIs, four SPIs, two 12-bit ADCs, two 12-bit DACs, and AES/DES cryptographic engines. Operating at frequencies up to 32MHz with a supply voltage range of 1.6V to 3.6V, it supports five sleep modes for optimized power consumption.

Feature Summary

• Integrates a high-performance AVR CPU executing instructions in a single clock cycle for efficient processing.
• Includes advanced connectivity options such as USB 2.0 full-speed interface and multiple serial communication modules.
• Features robust security through integrated AES and DES cryptographic engines alongside CRC generators.
• Supports capacitive touch sensing via QTouch library compatibility for intuitive user interfaces.

Applications

• Industrial control systems
• USB connectivity devices
• Low power battery applications
• Building control systems

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature range. Ensure the component matches the required RoHS compliance standards. Cross-reference the datasheet revision history to confirm the availability of errata information relevant to your design implementation. Confirm that the selected variant aligns with your board layout constraints regarding pinout and physical dimensions.

Selection Notes

Select this model when 64KB of program memory and 4KB of SRAM are sufficient for application requirements. Consider the 100-pin package availability if space constraints allow for higher pin counts. Evaluate the need for USB connectivity and cryptographic hardware acceleration before choosing over simpler variants. Ensure the operating voltage range of 1.6V to 3.6V matches the system power supply design.

Part Context

This component belongs to the AVR XMEGA A1U family, which offers enhanced peripheral richness compared to standard AVR devices. The A1U series is designed for applications requiring high performance combined with low power consumption. It utilizes Microchip's high-density nonvolatile memory technology, allowing for flexible in-system programming and debugging via PDI or JTAG interfaces.

Replacement Considerations

The ATXMEGA64A1U-AU is a verified alternative within the same family, offering identical electrical characteristics but potentially differing in packaging or temperature rating. Verify pin compatibility and software register mapping before substitution. Consult the official ordering information table for exact cross-references regarding package types and industrial grade variants.