ATXMEGA64B3-AN

Overview

The ATXMEGA64B3-AN is an 8/16-bit microcontroller from the AVR XMEGA B3 family, manufactured by Microchip Technology. It features 64KB of in-system self-programmable flash memory, 2KB EEPROM, and 4KB internal SRAM. The device operates at frequencies up to 32MHz with a supply voltage range of 1.6V to 3.6V. Key peripherals include a two-channel DMA controller, four-channel event system, USB 2.0 full-speed interface, AES/DES crypto engine, and an LCD driver supporting up to 4x25 segments. It utilizes a 64-lead TQFP package.

Feature Summary

• Integrates a high-performance AVR RISC CPU with single-cycle execution capabilities and hardware multiplier.
• Includes advanced analog peripherals such as an 8-channel 12-bit ADC and dual analog comparators with window compare functionality.
• Supports capacitive touch sensing through the QTouch library for buttons, sliders, and wheels.
• Features a dedicated Liquid Crystal Display controller with built-in contrast control and ASCII character mapping.

Applications

• Industrial control systems
• Building and climate control units
• Utility metering applications
• Medical devices

Procurement Notes

Verify the specific ordering suffix 'AN' against official Microchip documentation to confirm the exact package type and temperature rating. Ensure compatibility with existing PCB footprints for the 64-lead TQFP configuration. Confirm that the component meets all required environmental standards for the intended deployment environment.

Selection Notes

Select this model when a balance of processing power and low-power consumption is required for embedded applications. The integrated USB interface and crypto engine make it suitable for secure connectivity needs. Consider the available I/O count and peripheral set against application requirements before finalizing the design.

Part Context

This component belongs to the AVR XMEGA B3 microcontroller family, designed for applications requiring high performance and low power. The family shares architectural similarities but varies in memory size and package options. The B3 series specifically targets cost-sensitive applications while maintaining robust peripheral sets.

Replacement Considerations

Consult official Microchip documentation for verified substitute part numbers within the same family or compatible series. Ensure any replacement maintains pinout compatibility and functional equivalence for critical peripherals.