Microchip Unveils Turnkey Controllers Targeting the Displayless HMI Market
TECHWORLD ·
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Microchip Technology has launched the MTCH3380P and MTCH3240P turnkey capacitive touch controllers, aimed at the displayless HMI market and supporting parallel touch sensing.
The two products operate 12 on-chip ADCs in parallel to handle multiple touch sensors such as buttons, sliders, and wheels, and support operation up to 105°C as well as certification for IEC/UL 60730 Class B functional safety.
The MTCH3380P supports up to 38 sensors in Self-capacitance mode and up to 64 sensors in Mutual-capacitance mode, while the MTCH3240P supports up to 24 and 32 sensors, respectively.
Microchip Technology has launched turnkey capacitive touch controllers aimed at the displayless HMI market. The newly released products are the MTCH3380P and MTCH3240P, which support parallel touch sensing.
The products can handle multiple touch sensors, including buttons, sliders, and wheels, at the same time, and are used in human-machine interface (HMI) applications based on buttons, sliders, and wheels. They also support certification for IEC/UL 60730 Class B functional safety.
The supported operating temperature for both products is up to 105°C. As a result, they can be used in consumer appliances, outdoor equipment, and industrial equipment environments.
Recently, manufacturers have been introducing interfaces that combine lighting and capacitive touch buttons instead of displays in order to reduce system costs and improve product design and user experience. However, as the number of touch sensors increases, existing controllers may face the risk of data collection delays and the possibility of lower signal-to-noise ratio (SNR). Microchip said it is addressing those issues with a parallel sensing architecture that collects data from multiple sensors at the same time.
The MTCH3380P and MTCH3240P operate 12 on-chip ADCs in parallel to collect data from multiple sensors. This is intended to reduce data collection delays as the number of sensors increases, and the two products are designed to ensure fast touch response and high SNR.
The number of supported sensors differs by product. The MTCH3380P supports up to 38 sensors in Self-capacitance mode and up to 64 sensors in Mutual-capacitance mode. The MTCH3240P handles up to 24 sensors in Self-capacitance mode and up to 32 sensors in Mutual-capacitance mode.
Based on improved touch sensitivity and noise immunity, the two products support stable touch detection even in environments with thick cover materials and when wearing gloves. As a result, they can be used in ovens, cooktops, refrigerators, and washing machines, where moisture and glove use are likely. They can also be used in EV chargers, parking meters, and kiosks, where protective covers and stable operation across a wide temperature range are required.
In addition to supplying controllers, Microchip also provides a touch sensing ecosystem. The scope of this ecosystem includes support for product development, evaluation, and testing. Supported items include the mTouch Studio development environment, evaluation hardware, a host driver for Linux, and a host driver for Zephyr.
With this support, manufacturers can reduce hardware and software development burdens and shorten product design and verification processes. Both products support certification for IEC 60730 Class B functional safety. The two products can be used in manufacturers' development efforts aimed at meeting relevant regulatory requirements.
Giovanni Fontana, senior director of Microchip's HMI business unit, said manufacturers are looking for ways to deliver intuitive and visually appealing user interfaces while also reducing system costs. He said the MTCH3380P and MTCH3240P provide fast touch data collection and high signal-to-noise ratio. He added that the MTCH3380P and MTCH3240P help address touch sensing challenges in displayless interfaces and support responsiveness and reliability in demanding applications.
Source: TECHWORLD · Park Gyu-chan
Original: https://www.epnc.co.kr/news/articleView.html?idxno=407991
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Source: TECHWORLD
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