S-Touch™ controllers Ultra-low-power solution for touch sensing

S-Touch™ leading technology Touch-sensing interfaces are simplifying the way people interact with technology. They have not only replaced traditional button-type user interfaces in many applications, but also opened up new markets with high consumer interest. STMicroelectronics, as a leading semiconductor supplier, has developed the S-Touch family of touch-sensing controllers. These controllers offer highly-efficient solutions for advanced user interfaces. S-Touch controllers give designers the flexibility to create new attractive products with stylish features in applications such as LCD TVs,...

Multimedia control bars QQ QQ Touch keys, sliders Blinking and brightness control White goods, home appliances Home appliance control panels QQ QQ Touch keys, sliders Blinking and brightness control

Solution for touchscreen applications The S-Touch touchscreen controller is a four-wire resistive controller featuring autonomous functionality to minimize demands on the host processor. For embedded designers, this frees valuable CPU cycles to ease pressure on performance, power consumption and response times. PCI film Top circuit layer ITO conductive coating Advanced 4-wire resistive touchscreen controller CPU Touchscreen I²C/SPI Spacer dot ITO conductive coating Bottom circuit layer Glass or acrylic backing panel REF+, REF/GPIOs Advanced movement tracking to reduce CPU/bus use2 Window masking2...

S-Touch™ technology for capacitive touch keys, wheels and sliders The S-Touch capacitive touch-key controller is based on an impedance change detection engine with an all digital, ultra-low-power capacitance measurement architecture. The high sensitivity of the device ensures excellent performance, even with a relatively small sensor pad size (0.30 cm²) under a few millimeters of plastic/glass overlay. Capacitive sensor pads can be built with any conductive material, including standard PCB pads, Flex-PCB, ITO (indium tin oxide). S-Touch™ capacitive touch-key block diagram Key Capacitive touch-key...

S-Touch designer support Touch-sensor basic function description A capacitive sensor electrode is a conductive pad used for the measurement of finger capacitance. It is connected to the sense input of the S-Touch™ controller IC. Button The S-Touch™ controller IC measures the capacitance of the button electrode. The button has the basic function of detecting the finger’s presence. Any button shape can be implemented, such as square, circle, triangle or others. Slider The slider function is used to detect finger movement in a one dimensional direction. One example of its application is volume control....

S-Touch designer support S-Touch™ support S-Touch™ devices: system considerations S-Touch™ PCB and layout guidelines S-Touch™ design procedure S-Touch™ hardware tuning guidelines A programming guide for the touch module in capacitive S-Touch™ devices Application notes Reference number S-Touch™ system integration test STEVAL-IHI002V1, capacitive touch-sensing keyboard based on the STMPE1208S STEVAL-IHI001V1 demonstration board: washing machine user interface based on the ST7LITE49M and STLED316S PCB design guidelines for STMPE16M31, STMPE24M31 Wheels, sliders STMPE811 PCB reference code for touchscreen...

S-Touch products Touch-sensing technology Operating voltage Capacitive touch Capacitive touch Capacitive touch Capacitive touch Touch keys Capacitive touch Part number Capacitive touch with proximity Capacitive touch with proximity Wheels, sliders Capacitive touchscreen S-Touch controller packages © STMicroelectronics - April 2010 - Printed in Italy - All rights reserved The STMicroelectronics corporate logo is a registered trademark of the STMicroelectronics group of companies. All other names are the property of their respective owners. For more information on ST products and solutions, visit...