ATXMEGA64C3-MHR

Overview

The ATXMEGA64C3-MHR is an 8/16-bit AVR XMEGA microcontroller featuring 64KB of in-system self-programmable Flash, 2KB EEPROM, and 4KB SRAM. It operates within a 1.6V to 3.6V supply range at frequencies up to 32MHz. The device includes a 16-channel 12-bit ADC, USB 2.0 full-speed interface, three USARTs, two TWIs, and two SPIs. It utilizes a 64-lead QFN package.

Feature Summary

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

Applications

• Industrial control systems
• USB connectivity devices
• Sensor control applications
• HVAC systems
• Medical equipment

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and tape-and-reel configuration. Ensure compatibility with existing PCB footprints and reflow profiles. Confirm that the component meets required environmental standards such as RoHS compliance before finalizing procurement orders.

Selection Notes

Select this model when a balance of moderate program memory and integrated USB functionality is required. The QFN package suits designs needing compact form factors. Consider the operating voltage range and available I/O count relative to system requirements. Evaluate the need for the specific event routing features compared to other series members.

Part Context

This component belongs to the AVR XMEGA C3 family, designed for high-performance, low-power embedded applications. It shares architectural similarities with other C3 variants but offers specific memory sizes and package options. The family emphasizes code efficiency through single-cycle instruction execution and rich peripheral integration.

Replacement Considerations

ATXMEGA64C3-AU serves as a tray-packaged alternative within the same series. Verify pinout compatibility and ensure the replacement matches the required temperature range and package dimensions for direct substitution.