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New Single-Chip Solution for Vehicle Ultrawide Touch Displays

Microchip's new MXT2912TD-UW is suitable for both LCD and OLED displays, up to 45 inches, with up to 32 touch keys

To better meet the need for safe, intuitive and easy-to-use user interfaces within automotive vehicles, designers are continuing to consolidate the vehicle’s cluster, center stack and co-driver displays into very wide screens. Streamlining and simplifying system development for these ultrawide screens often seen in electric vehicles (EVs), advanced driver-assistance systems (ADAS) and premium vehicles, Microchip Technology has released its maXTouch® MXT2912TD-UW touchscreen controller. This is the industry’s first automotive-qualified, single-chip solution that addresses display sizes up to 45 inches with a very wide aspect ratio, supporting liquid-crystal display (LCD) and organic light emitting diode (OLED) display technologies.

Click for Larger Image - Microchip Releases Single-Chip Solution for Vehicle Ultrawide Touch Displays The MXT2912TD-UW reduces the need for multiple touch controllers within a vehicle’s human machine interface (HMI) display. This single-chip touch controller provides the highest report rate for wide displays and is independent of the display resolution, helping achieve the same smartphone user experience that consumers have come to expect. Also supported by the exceptional signal-to-noise ratio (SNR) intrinsic to maXTouch technology, the MXT2912TD-UW enables detection and tracking of multi-finger touch through thick gloves and a wide variety of overlay materials and thicknesses, even in the presence of moisture.

Driven by the ISO 26262 specification for functional safety in road vehicles, the MXT2912TD-UW contains a variety of safety related features, simplifying the display module system’s path to functional safety certification. These include periodic self-test, touch sensor test, internal Flash and RAM tests, full signal data path integrity checks and additional microprocessor (MPU) core testing. The embedded firmware is developed to Automotive SPICE® processes.

“The automotive industry is driving innovations in interior design, including the integration of sleek human machine interface concepts. Microchip enables these revolutionary designs with our new touch controller, supporting wide aspect ratio touch sensors with our unique and patented technology,” said Fanie Duvenhage, vice president of Microchip’s human machine interface business unit. “Our single-chip solution offers display makers and automotive Tier 1 suppliers simple and known touch solutions for modern vehicle HMI systems, reducing cost, risk and time to market.”

Features of the MXT2912 Automotive maXTouch Touchscreen Controller include:

  • Single IC solution for very wide aspect ratio touchscreens
  • Fully automotive-qualified (Grade 2),operating temperature range of -40 to +105°C
  • Communication via a serial interface (I2C or SPI) up to 8MHz
  • Supports multiple thick glove (5mm) touches
  • Support thick lens (up to 3mm plastic)
  • Additional smart diagnostic reporting capabilities
  • Up to 32 touch keys

More information on the MXT2912 Automotive maXTouch Touchscreen Controller can be found on the Microchip website at Microchip MXT2912 product page

Note: The Microchip name and the Microchip logo are registered trademarks of Microchip Technology Incorporated in the U.S.A and other countries. All other trademarks mentioned herein are the property of their respective companies.

The Microchip website address is www.microchip.com
[Reprinted with kind permission from Microchip Corporation - Release Date, 20th April, 2021]