Main features:
- New controllers support thick protective glass for multi-finger touch sensing
- Microchip's proprietary signal shaping technology significantly reduces emissions
- Adaptive touch sensing through thick gloves in the presence of moisture
- Functional safety in the car with intelligent self-diagnostic functions and via sensors
Microchip announces a new family of maXTouch touchscreen controllers® on a single chip designed to address the design challenges of modern automotive capacitive touch systems with displays up to 20 inches.
As the size of in-car touch screens increases, drivers expect these screens to offer the same touch-operating convenience as mobile phones. However, car screens must pass stringent shock and vibration tests, and therefore incorporate thick protective glass that can affect the performance of the touch interface. As screens get larger, they are more likely to interfere with other frequencies such as AM radio and car access systems.
The MXT2912TD-A, which incorporates some 3.000 touch-sensing nodes and the MXT2113TD-A, with more than 2.000 nodes, offer consumers the touchscreen-operating convenience they expect from vehicles. These new devices are based on Microchip's existing maXTouch touchscreen technology, which is widely adopted by manufacturers around the world. Microchip's latest solutions offer higher signal-to-noise ratios to meet the requirements of thick crystals and are compatible with even multiple fingers through thick gloves and in the presence of moisture.
Car manufacturers replace mechanical switches with dashboard displays to make interior design more elegant, making it even more important for safe and reliable operation. The MXT2912TD-A and MXT2113TD-A devices incorporate self-diagnostic capabilities and sensors that constantly monitor the integrity of the touch system.
These intelligent diagnostic functions are compatible with the ASIL (Automotive Safety Integrity Level) classification system as defined by the ISO 26262 standard for functional safety systems in vehicles.
The new devices incorporate technology that enables adaptive touch sensing that uses autocapacity and mutual capacitance measures, so all touches are recognized and false touch detections are avoided.
They also incorporate Microchip's new proprietary signal shaping technology, which significantly reduces emissions to help large touch screens use maXTouch controllers that meet CISPR-25 Level 5 requirements for automotive electromagnetic interference. The new touch controllers also cover Grade 3 (-40 to +85°C) and Grade 2 (-40 to +105°C) automotive operating temperature ranges and are AEC-Q100 certified.
The addition of the new maXTouch touchscreen controllers allows Microchip to offer full scalability to customers, offering the only comprehensive and growing catalog of automotive-compliant touchscreen controllers suitable for screen sizes of different sizes. Developers can build various platforms, from small touch keyboards to large screens in the same development environment with the same software interface and a high-quality user experience. Ultimately, this shortens design time and reduces system and development costs.
Eight design centers specializing in sensor and application design around the world help Microchip customers and partners accelerate the time to market for designs based on maXTouch technology, whose experts work with the largest manufacturers of sensors, displays and touch modules.
An evaluation kit is available for each maXTouch touchscreen controller. The kit includes a PCB with the maXTouch touch screen controller, a touch sensor on a transparent glass, the flat PCB for connection to the sensor screen, a card for connecting the kit to the host computer via USB , as well as cables, software and documentation. All devices are supported by maXTouch Studio, a comprehensive software development environment for evaluating maXTouch touchscreen drivers.
The MXT2912TD-A and MXT2113TD-A devices are now available for sampling and volume production in LQFP176 and LQFP144 packages, respectively.
For more information visit www.microchip.com/atmxt2912td-a
Supporting photographs are attached.
For more information, please contact:
Arrow Tel: + 34 91 304 30 40
Avnet Memec/Silica Tel: + 34 91 372 71 00
Digi-Key Corporation Tel: +1 800 344 4539
EBV Elektronik Tel: + 34 91 804 32 56
Farnell Tel: + 34 93 475 88 05
Future Electronics Tel: + 34 91 721 4270
Mouser Electronics Tel: + 34 936 455 263
RS Components Ltd Tel: + 34 902 100 711
david wright,
Microchip Technology.
Phone:+ 44 118 921 5849
Email: david.wright@microchip.com
Suzy Kenyon
Napier Partnership.
Tel: 44 1243 531123
Email: suzy@napierb2b.com, napierb2b.com
MC1439en
Note: The Microchip name and logo, the Microchip logo, and maXTouch are registered trademarks of Microchip Technology Incorporated in the US and other countries. All other brands mentioned belong to their respective companies.
