ATXMEGA64A4U-CUR

Overview

The ATXMEGA64A4U-CUR is an 8/16-bit microcontroller from the AVR XMEGA A4U family, manufactured by Microchip Technology. It features a 49-ball VFBGA package and operates within a supply voltage range of 1.6V to 3.6V. The device includes 64KB of in-system self-programmable flash memory, 2KB of EEPROM, and 4KB of internal SRAM. It supports clock frequencies up to 32MHz at 2.7V and 12MHz at 1.6V. Key peripherals include a USB 2.0 interface, five USARTs, two TWIs, two SPIs, a four-channel DMA controller, and a twelve-channel 12-bit ADC.

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 compliant with low-speed operation requirements.
• Features a four-channel DMA controller and an eight-channel event system for efficient data transfer and peripheral synchronization.
• Provides cryptographic security through integrated AES and DES engines alongside CRC generators.

Applications

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

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature range. Ensure compatibility with required programming interfaces such as PDI. Confirm RoHS compliance status if environmental regulations apply to the final assembly. Cross-reference datasheet revision history for any silicon errata or functional clarifications relevant to production integration.

Selection Notes

Select this component when a balance of moderate program memory and rich peripheral sets is required. The VFBGA package suits designs needing compact footprints with fine-pitch interconnects. Consider the operating voltage range and available clock speeds relative to power constraints. Evaluate the need for USB connectivity and hardware encryption capabilities before choosing over lower-end variants.

Part Context

This part belongs to the AVR XMEGA A4U series, designed for low-power, high-performance embedded applications. It shares architectural similarities with other members like the ATXMEGA32A4U and ATXMEGA128A4U, differing primarily in memory sizes and package options. The A4U line emphasizes energy efficiency while maintaining robust I/O and communication capabilities.

Replacement Considerations

ATXMEGA64A4U-AU

FAQ

What is the maximum operating frequency at 1.6V supply?

The device supports frequencies up to 12MHz when operating at a minimum supply voltage of 1.6V.

Does the ATXMEGA64A4U support capacitive touch sensing?

Yes, the device supports capacitive touch buttons, sliders, and wheels via the Microchip QTouch library.