Turnkey Capacitive Controller For Interface Design

These low-power, water-tolerant solutions offer robust performance, easy integration, and flexible design options, streamlining development with tools that eliminate complex tuning and reduce design cycles.

Turnkey touch controllers provide a quick and efficient way to upgrade from mechanical buttons to modern touch buttons or displays. Microchip Technology has introduced the 12-button MTCH2120 touch controller, offering a streamlined solution for integrating touch button capabilities into user interfaces. This low-power, water-tolerant device is part of the company’s unified ecosystem, simplifying the design process and ensuring smooth transitions between turnkey solutions and MCU-based touch implementations. The MTCH2120 is the first in a planned series of I²C-based touch controllers supported by a comprehensive design-in ecosystem.

It delivers a reliable touch experience that remains unaffected by noise or moisture. It provides flexibility to meet diverse product requirements, with low-power features enabling button grouping to reduce scan activity and power consumption while maintaining full functionality.

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Key features and tools include:

• Easy Tune Feature: Automatically adjusts sensitivity and filter levels based on real-time noise assessment, eliminating complex threshold tuning.
• Harmony Host Code Configurator Plug-In: Simplifies the connection to Microchip MCUs and MPUs by removing the need to implement the I²C protocol on the host.
• Data Visualizer: Facilitates design validation.
• I²C Port Expander Capabilities: Enhances design options.
• Touch Library: Reduces design cycles by minimizing software engineering and firmware handling.
• Evaluation Board: Includes a SAM C21 host MCU for seamless prototype integration.

It is the first in the MTCH family to incorporate I²C technology. Additional models such as the MTCH1010, MTCH1030, and MTCH1060 offer similar robust performance with a straightforward GPIO interface. Future MTCH2XXX family solutions will expand bus-controlled flexibility, broadening the reach of the company’s user-friendly design-in ecosystem across more markets.

“The MTCH2120 combines decades of Microchip’s touch expertise with a robust ecosystem of development tools to deliver a superior and user-friendly touch experience,” said Rodger Richey, vice president of development systems and academic programs at Microchip Technology. “Developers gain both exceptional touch robustness and design flexibility without the challenges of tuning or programming.”

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