ATXMEGA64A3-AUR

Overview

The ATXMEGA64A3-AUR is an 8/16-bit AVR XMEGA microcontroller featuring a 32 MHz AVR RISC CPU, 64 KB Flash, 2 KB EEPROM, and 4 KB SRAM. It includes a four-channel DMA controller, eight-channel event system, seven 16-bit timers, seven USARTs, AES/DES crypto engine, two 12-bit ADCs, one 12-bit DAC, and five analog comparators. Operating at 1.6V to 3.6V with -40°C to 85°C range, it uses a 64-lead TQFP package.

Feature Summary

• AVR RISC architecture executing instructions in single clock cycles for high throughput
• Integrated four-channel DMA controller supporting memory-to-peripheral transfers
• Eight-channel event system enabling inter-peripheral communication without CPU intervention
• AES and DES cryptographic engines for secure data processing

Applications

• Industrial control systems
• Factory automation equipment
• Medical devices
• HVAC controllers
• Motor control applications

Procurement Notes

Verify the specific suffix 'AUR' indicates tape-and-reel packaging rather than tray packaging when sourcing components. Confirm RoHS compliance status as required by project specifications. Ensure the ordering code matches the exact pinout and package dimensions of the 64-lead TQFP variant to avoid assembly errors.

Selection Notes

Select this component for designs requiring high-performance peripheral integration and low power consumption. The device supports multiple sleep modes including idle and power-down. Consider the XMEGA A3U series if new design recommendations are strictly followed, as the A3 series is not recommended for new designs.

Part Context

This part belongs to the Atmel AVR XMEGA A3 family of microcontrollers. It utilizes CMOS technology and features a Harvard architecture with separate program and data buses. The device integrates non-volatile memory with read-while-write capabilities and supports in-system programming via PDI or JTAG interfaces.

Replacement Considerations

Microchip recommends using the XMEGA A3U series instead of the A3 series for new designs. Verify compatibility with existing development tools and software frameworks before transitioning to alternative packages within the same memory configuration family.