ATXMEGA64D3-AN

Overview

The ATXMEGA64D3-AN is an 8-bit microcontroller from the AVR XMEGA D3 series, manufactured by Microchip Technology. It features a 32 MHz AVR RISC core with 64 kB of in-system programmable Flash memory, 4 kB of SRAM, and 2 kB of EEPROM. The device operates within a supply voltage range of 1.6 V to 3.6 V and supports an industrial temperature range of -40°C to +85°C. It is housed in a 64-pin TQFP package and provides 50 general-purpose I/O lines. Key peripherals include sixteen 12-bit ADC channels, five timers/counters, and communication interfaces such as SPI, TWI (I2C), and USART.

Feature Summary

• Integrates a high-performance 8/16-bit AVR RISC core capable of executing complex instructions in a single clock cycle.
• Includes a comprehensive event system for direct peripheral-to-peripheral communication, reducing CPU overhead and latency.
• Features low-power operation with picoPower technology, enabling fast wake-up times and extended battery life in sleep modes.
• Supports multiple communication protocols including SPI, TWI, and USART for versatile connectivity options.

Applications

• Battery-powered thermostats and climate control systems
• Utility meters with RF or ZigBee connectivity
• Building automation and smart home devices
• Industrial sensor nodes requiring precise analog signal acquisition

Procurement Notes

Verify the specific suffix 'AN' against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with existing PCB footprints for the 64-TQFP form factor. Check for RoHS compliance status in the latest datasheet revision. Confirm availability through authorized distributors as part numbers may have lifecycle changes.

Selection Notes

Select this component when a balance of moderate memory size and rich peripheral set is required for cost-sensitive applications. The D3 series offers enhanced analog performance compared to older generations. Consider the 64-pin count for sufficient I/O flexibility without excessive board space usage. Evaluate power consumption requirements against the picoPower capabilities if battery operation is critical.

Part Context

This part belongs to the AVR XMEGA D3 family, which focuses on low-power and high-performance embedded control. The D3 series distinguishes itself with improved ADC accuracy and additional timer resources compared to the B3 series. It shares architectural similarities with other XMEGA devices but offers optimized pinouts and peripheral configurations for specific application needs.

Replacement Considerations

Direct substitutes include ATXMEGA64D3-AU (TQFP) or ATXMEGA64D3-AUR (Reel). For QFN packages, consider ATXMEGA64D3-MH. Verify pinout compatibility and software register mapping before swapping between different package types within the same series.