ATXMEGA64A4U-AU

Overview

The ATXMEGA64A4U-AU is an 8/16-bit microcontroller from the AVR XMEGA A4U family, manufactured by Microchip Technology. It features a 32 MHz maximum clock frequency and operates within a supply voltage range of 1.6V to 3.6V. The device includes 64KB of in-system self-programmable flash memory, 4KB of internal SRAM, and 2KB of EEPROM. It is housed in a 44-lead TQFP package with dimensions of 10x10mm. The component supports an operating temperature range from -40°C to +85°C.

Feature Summary

• AVR enhanced RISC architecture executing instructions in a single clock cycle for high throughput
• Integrated four-channel DMA controller and eight-channel event system for efficient data handling
• Built-in USB 2.0 full-speed device interface compliant with standard specifications
• Supports capacitive touch sensing via QTouch library integration

Applications

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

Procurement Notes

Verify the specific ordering suffix 'AU' corresponds to the 44-lead TQFP package configuration. Confirm that the procurement documentation explicitly references the ATXMEGA64A4U-AU part number to ensure compatibility with the required 1.6V to 3.6V operating voltage range and industrial temperature specifications.

Selection Notes

Select this component when a balance of processing speed and low power consumption is required for embedded applications. The inclusion of a hardware USB interface and cryptographic engines makes it suitable for secure communication tasks. Ensure the design accommodates the 44-pin TQFP footprint and utilizes the available 34 programmable I/O lines effectively.

Part Context

This device belongs to the AVR XMEGA A4U series, which emphasizes energy efficiency without compromising performance. The series integrates nonvolatile memory technologies allowing for read-while-write operations. It provides a flexible platform for developers requiring robust peripheral sets including multiple timers, serial interfaces, and analog converters within a compact form factor.

Replacement Considerations

ATXMEGA64A4U-MH

FAQ

What programming interface does the ATXMEGA64A4U-AU utilize?

The device uses 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 capacitive touch buttons, sliders, and wheels through the integration of the Microchip QTouch library.