ATXMEGA64D3-AU

Overview

The ATXMEGA64D3-AU is an 8/16-bit microcontroller based on the AVR XMEGA D3 series. It features a 32 MHz maximum clock frequency and operates within a supply voltage range of 1.6 V to 3.6 V. The device includes 64 kB of Flash program memory, 4 kB of SRAM, and 2 kB of EEPROM. It provides 50 I/O lines and utilizes a 64-TQFP package. Key peripherals include a 12-bit ADC, five timers/counters, and interfaces such as SPI, TWI, and USART.

Feature Summary

• Integrates a high-performance AVR RISC core with up to 32 MIPS throughput at 32 MHz.
• Features an event system for direct peripheral-to-peripheral communication without CPU intervention.
• Includes a 12-bit analog-to-digital converter with multiple input channels.
• Supports low-power operation modes with real-time counter functionality.

Applications

• Battery-powered devices requiring extended sleep current efficiency
• Building automation and climate control systems
• Utility meters with RF connectivity
• Thermostats with display interfaces

Procurement Notes

Verify the specific revision level and manufacturing date code against the latest Microchip datasheet to ensure compatibility with required firmware libraries. Confirm that the TQFP-64 package dimensions match the target PCB footprint. Check for any recent product change notices regarding material composition or assembly processes.

Selection Notes

Select this component when a balance of moderate memory capacity and low power consumption is required. The D3 series offers enhanced analog performance compared to older A-series parts. Ensure the application does not require USB connectivity, which is absent in the D3 series but available in C3 variants.

Part Context

This part belongs to the AVR XMEGA D3 family, designed for applications needing efficient power management and robust peripheral integration. It shares architectural similarities with other XMEGA devices but distinguishes itself through specific pin counts and peripheral sets optimized for cost-sensitive embedded control tasks.

Replacement Considerations

ATXMEGA64A3-AU: Higher peripheral count including DAC and DMA, larger package options. ATXMEGA64C3-AU: Includes Full-Speed USB interface. ATXMEGA64D4-AUR: Smaller 44-TQFP package with reduced I/O count.