Configurable SoCs support turnkey touchscreen solutions

Cypress Semiconductor has extended its PSoC® CapSense™ range to help designers using rugged touch-sensor technologies including projectedcapacitance sensors that can be embedded in toughened panels.

Conventional surface-capacitance sensors are also supported, and a wide range of applications and screen sizes can be achieved.

In addition to accelerating design completion, the new PSoC CapSense touchscreen solution allows designers to implement multiple additional functions simultaneously, including capacitive buttons and sliders as well as proximity sensing. Engineers can also take advantage of the PSoC mixed-signal array to implement system-level functions such as backlight control, motor control, power management, I/O expansion, and ambientlight detection.

These functions, in conjunction with industry-standard I2C and SPI communications, allow a high level of system integration.

The flexibility of the PSoC mixedsignal array, supporting two touchsensing technologies, enables accurate touchscreen performance for a wide range of screen sizes. Projected-capacitance technology can sense through thick overlays and supports multi-touch detection and gesturing, making it ideal for small-form-factor screens. Surfacecapacitance sensing, by contrast, operates from the four corners of the screen and therefore scales well to larger screens without an attendant increase in I/O.

For more information see the Design Note on page 080222.

 

FEATURES PSoC embedded microcontroller On-chip Flash memory and RAM PSoC Designer Integrated Design Environment (IDE) Libraries of pre-configured CapSense modules

APPLICATIONS Automated kiosks and cash dispensers Access control systems Point-Of-Sale (POS) terminals Gaming machines Industrial user interfaces White goods

 

 

 

The PSoC® FirstTouch™ Starter Kit CY3270 is available to members of the Future Board Club. To apply for the development board, and membership of the Board Club, go to www.my-boardclub.com/manf-offers.htm This offer is free and subject to qualification.

 

Cypress Semiconductor/CapSense