ATXMEGA64A4U-AN

Overview

The ATXMEGA64A4U-AN is an 8/16-bit microcontroller from the AVR XMEGA A4U family, manufactured by Microchip Technology. It features a 32 MHz CPU throughput and operates within a supply voltage range of 1.6 V to 3.6 V. The device includes 64 KB of in-system self-programmable flash memory, 2 KB of EEPROM, and 4 KB of internal SRAM. It is housed in a 44-lead TQFP package with an industrial operating temperature range of 0°C to 105°C.

Feature Summary

• Integrates a high-performance 8/16-bit AVR RISC CPU capable of executing instructions in a single clock cycle for optimized power consumption versus processing speed.
• Includes a four-channel DMA controller and an eight-channel event system for hardware-accelerated data movement and peripheral synchronization without CPU intervention.
• Features a comprehensive analog subsystem comprising a twelve-channel 12-bit ADC, a two-channel 12-bit DAC, and dual analog comparators with window compare functionality.
• Supports multiple communication protocols including USB 2.0 full-speed device interface, five USARTs, two TWIs, and two SPIs.

Applications

• Industrial control systems
• Factory automation
• Building control
• USB connectivity devices

Procurement Notes

Verify the specific ordering suffix AN against official Microchip documentation to confirm the 0°C to 105°C industrial temperature rating and 44-lead TQFP package configuration. Ensure compatibility with the required voltage levels and pinout assignments before finalizing procurement specifications.

Selection Notes

Select this component when an application requires a balance of moderate program memory capacity and extensive peripheral integration. The inclusion of hardware cryptographic engines and capacitive touch sensing support makes it suitable for secure embedded interfaces. Evaluate the 32 MHz performance ceiling against the target power budget constraints.

Part Context

This part belongs to the AVR XMEGA A4U series, which emphasizes low power consumption and high peripheral richness. The A4U designation indicates the specific feature set and package options available within the broader XMEGA portfolio, designed for cost-effective embedded solutions requiring robust I/O capabilities.

Replacement Considerations

Consult the official datasheet for confirmed substitute part numbers within the same product family. Verify that any alternative maintains identical pinout, memory size, and thermal characteristics to ensure direct interchangeability.

FAQ

What programming interface does the ATXMEGA64A4U-AN utilize?

The device utilizes the Program and Debug Interface (PDI), a fast two-pin interface designed for programming and debugging operations.

Does the microcontroller support capacitive touch sensing?

Yes, the device supports QTouch library integration for implementing capacitive touch buttons, sliders, and wheels functionality.