ATXMEGA64A3U-AN

Overview

The ATXMEGA64A3U-AN is an 8/16-bit AVR XMEGA microcontroller featuring a 64KB in-system self-programmable flash, 2KB EEPROM, and 4KB internal SRAM. It operates at frequencies up to 32MHz with a supply voltage range of 1.6V to 3.6V. The device includes a four-channel DMA controller, eight-channel event system, seven 16-bit timer/counters, one USB device interface, seven USARTs, two TWIs, three SPIs, AES/DES crypto engine, two 16-channel 12-bit ADCs, one 2-channel 12-bit DAC, and four analog comparators. It provides 50 programmable I/O pins and is housed in a 64-lead TQFP package.

Feature Summary

• Integrates a high-performance AVR RISC CPU with hardware multiplier for efficient arithmetic operations.
• Includes a dedicated USB 2.0 full-speed device interface supporting up to 32 endpoints.
• Features advanced peripheral connectivity including multiple USARTs, SPIs, and TWI interfaces.
• Supports capacitive touch sensing through the QTouch library integration.

Applications

• Industrial control systems
• Factory automation equipment
• Medical devices
• USB connectivity applications

Procurement Notes

Verify the specific ordering code matches the required temperature grade and package type. Confirm RoHS compliance and halide-free status as specified in the datasheet notes. Ensure the selected variant aligns with the intended memory configuration and operating frequency requirements for the target application design.

Selection Notes

Select this component when a robust USB interface combined with rich analog peripherals is required. The A3U series offers extended temperature ranges suitable for demanding environments. Consider the available memory sizes and I/O counts to ensure adequate headroom for future firmware updates and peripheral expansion needs.

Part Context

This microcontroller belongs to the AVR XMEGA A3U family, designed for high performance and low power consumption. It utilizes Atmel's high-density nonvolatile memory technology and supports read-while-write capabilities. The architecture allows for single-cycle instruction execution, optimizing the balance between processing speed and power efficiency.

Replacement Considerations

ATXMEGA64A3U-AU

FAQ

What programming interfaces are supported by this device?

The device supports both JTAG (IEEE 1149.1 compliant) and PDI (Program and Debug Interface) for programming and debugging purposes.

Does the microcontroller support capacitive touch sensing?

Yes, it supports capacitive touch buttons, sliders, and wheels through the free QTouch library.