ATXMEGA64A4U-ANR

Overview

The ATXMEGA64A4U-ANR is an 8/16-bit microcontroller from the AVR XMEGA A4U family, manufactured by Microchip Technology. It features a 44-lead TQFP package and operates within a 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 execution capabilities for optimized power consumption versus processing speed.
• Includes a dedicated USB 2.0 full-speed device interface compliant with standard specifications.
• Features a four-channel DMA controller and an eight-channel event system for efficient data handling without CPU intervention.
• 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 ANR corresponds to the required tape and reel packaging configuration. Confirm that the 44-lead TQFP package dimensions match the target PCB footprint requirements. Ensure the operating temperature range aligns with the intended environmental conditions. Cross-reference the datasheet revision history for any silicon errata relevant to the production batch.

Selection Notes

Select this component when a balance of moderate program memory size and extensive peripheral connectivity is required. The inclusion of a hardware USB interface simplifies design for communication-heavy applications. Consider the available sleep modes if power efficiency is a critical constraint. Verify that the 34 programmable I/O pins meet the system's interface needs.

Part Context

This part belongs to the AVR XMEGA A4U series, which emphasizes low power operation and rich peripheral sets. The A4U family distinguishes itself with integrated USB controllers and advanced timer features compared to other AVR lines. It utilizes Microchip's high-density nonvolatile memory technology for reliable data retention.

Replacement Considerations

ATXMEGA64A4U-AUR

FAQ

Does the ATXMEGA64A4U-ANR support read-while-write operations?

Yes, the device features in-system programmable flash with read-while-write capabilities, allowing the boot loader to run while the application section is updated.

What is the maximum operating frequency at the minimum supply voltage?

At the minimum supply voltage of 1.6V, the device supports a maximum operating frequency of 12MHz.