ATXMEGA64A4U-CUK

Overview

The ATXMEGA64A4U-CUK is an 8/16-bit microcontroller from the AVR XMEGA A4U family, manufactured by Microchip Technology. It features a 64 KB in-system self-programmable flash memory, 2 KB EEPROM, and 4 KB internal SRAM. The device operates within a supply voltage range of 1.6 V to 3.6 V and supports clock frequencies up to 32 MHz when powered at 2.7 V or higher. It is housed in a 49-ball VFBGA package (5.0 x 5.0 mm) with a 0.65 mm pitch. Key peripherals include a four-channel DMA controller, an eight-channel event system, five USARTs, two TWIs, two SPIs, a USB 2.0 full-speed interface, and a 12-channel 12-bit ADC.

Feature Summary

• Integrates a high-performance AVR CPU executing instructions in a single clock cycle for optimized power consumption versus processing speed.
• Includes a dedicated USB 2.0 full-speed device interface supporting 32 endpoints with flexible configuration capabilities.
• Features an AES and DES cryptographic engine alongside CRC-16 and CRC-32 generators for data security and integrity.
• Provides an eight-channel event system and a four-channel DMA controller to minimize CPU intervention during data transfers.

Applications

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

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature rating. Ensure compatibility with required programming interfaces such as PDI. Confirm that the selected variant meets the environmental operating conditions necessary for the intended deployment scenario.

Selection Notes

Select this component for designs requiring integrated USB functionality combined with robust peripheral sets like multiple USARTs and timers. Consider the 49-ball VFBGA package constraints regarding PCB layout and soldering requirements. Evaluate the 32 MHz performance capability against the available supply voltage headroom to ensure stable operation across the target application's power profile.

Part Context

This part belongs to the AVR XMEGA A4U series, which emphasizes low power consumption and high performance. The family shares common architectural features including the enhanced RISC core and extensive peripheral integration. Variants within the series differ primarily in memory sizes and package options, allowing designers to scale resources based on specific application needs while maintaining software compatibility.

Replacement Considerations

Consult the official datasheet for cross-reference information. Verify pinout compatibility if substituting with other packages in the same memory class. Ensure equivalent peripheral availability and electrical characteristics match the original design requirements before implementation.