ATXMEGA64D4-AUR

Overview

The ATXMEGA64D4-AUR is an 8/16-bit microcontroller from the AVR XMEGA D4 family, manufactured by Microchip Technology. It features a 64KB in-system self-programmable flash memory, 2KB EEPROM, and 4KB internal SRAM. The device operates on a supply voltage of 1.6V to 3.6V with frequencies up to 32MHz at 2.7V or 12MHz at 1.6V. It includes a twelve-channel 12-bit ADC, two USARTs, two TWIs, two SPIs, four 16-bit timer/counters, and a four-channel event system. The component is housed in a 44-lead TQFP package and supports industrial temperatures from -40°C to +85°C.

Feature Summary

• Supports capacitive touch sensing via QTouch library integration for buttons, sliders, and wheels
• Features a four-channel event system for hardware-based peripheral signaling without CPU intervention
• Includes high-resolution timer extensions and advanced waveform extension capabilities
• Provides five software-selectable power-saving modes including extended standby

Applications

• Industrial control systems
• Building and climate control units
• Utility metering applications
• Low power battery operated devices

Procurement Notes

Verify that the ordering suffix 'AUR' corresponds to tape and reel packaging as specified in the official datasheet. Confirm the specific revision status of the component against the manufacturer's current production lifecycle data. Ensure compatibility with the required operating temperature range of -40°C to +85°C for the intended application environment.

Selection Notes

Select this model when a balance of moderate program memory size and rich peripheral connectivity is required. The 64KB flash capacity accommodates complex firmware while the integrated analog peripherals reduce external component count. Consider the 44-lead TQFP package constraints regarding board space and thermal dissipation requirements during the design phase.

Part Context

This component belongs to the AVR XMEGA D4 series, which utilizes Atmel picoPower technology to maintain low sleep currents regardless of memory size. The D4 family distinguishes itself through enhanced timer resolution and flexible event routing compared to previous generations. It serves as a mid-range solution within the broader XMEGA portfolio, bridging the gap between smaller 16/32KB variants and larger 128KB models.

Replacement Considerations

The ATXMEGA64D4-AU is the tray-packaged equivalent of this part number. Other members of the D4 family such as the ATXMEGA32D4 or ATXMEGA128D4 offer different memory capacities but share similar architectural features.