Touchscreen controllers for automotive HMIs

19 April 2017 Analogue, Mixed Signal, LSI

Microchip announced a new family of maXTouch touchscreen controllers for large-screen automotive human machine interface (HMI) designs. The technology brings multi-touch HMI, such as that experienced on a mobile phone, to car drivers and passengers on screen sizes from 8 to 15 inches.

The MXT1665T-A family features Microchip’s adaptive touch technology that uses self-capacitive touch as well as mutual-capacitive touch scanning. This combination provides a multi-touch experience even through thick cover lenses, thick gloves or in the presence of moisture and water. The product family is fully AEC Q100-qualified to address the unique needs of automotive system designs.

The family complements the successful MXT641T-A family of products and shares many of the same features developed for the automotive industry. It also supports larger screen sizes above 10 inches in addition to smaller multi-finger pinch separation.

The wide range of screen size options within Microchip’s touchscreen controller families enables scalability. The MXT1665T-A family consists of three controllers: the MXT1665T-A supports 1664 touch-node sensors; the MXT1189-A supports 1188 touch-node sensors; and the MXT799T-A with support for 798 touch-node sensors.

A designated evaluation kit is available for each of the parts in the MXT1665T-A family. Each kit includes a PCB with maXTouch controller; a touch sensor on a glass/plastic lens; the FPC to connect to the sensor display; a converter PCB to connect this kit to the PC via USB; and cables, software and documentation. The controllers are also compatible with maXTouch Studio, a full software development environment to support the evaluation of maXTouch.

For more information contact Shane Padayachee, Avnet South Africa, +27 (0)11 319 8600, [email protected], www.avnet.co.za

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