Capacitive Sensing Interface Webinar

Cypress Semiconductor
Cypress Semiconductor will host a free online seminar that explores capacitive sensing interfaces. The 60-minute seminar entitled “Innovations in Capacitive Interfaces,” will be take place on Wednesday, March 7 at 9:00 am PST.

The Webinar will explore the latest capacitive sensing techniques based on Cypress’s popular PSoC(R) (Programmable System-on-Chip(TM)) CapSense device and what factors influence the performance of such devices. It will introduce easy-to-use PSoC design tools to enable rapid, cost-efficient integration of a capacitive sensing interface into a product.

A single Cypress PSoC CapSense device can replace dozens of mechanical switches and controls with a simple, touch-sensitive interface. CapSense-based “button” and “slider” controls are more reliable than their mechanical counterparts because they are not prone to the environmental wear-and-tear that affects exposed buttons and switches. Cypress has surpassed 100 CapSense design wins worldwide in applications that include mobile handsets, portable media players, white goods, computers, printers and automotive, among others.

Capacitive sensing is fast becoming the solution of choice for front-panel display and media control applications. Increased durability, decreased bill of materials (BOM) and a clean, minimalist appearance make this elegant interface attractive to a wide range of designs. With Cypress’s CapSense interface, a finger on the interface forms an electrical connection with embedded sensors, which work with the PSoC device to translate data about the finger’s presence into various system control functions. The sensor itself is only a copper pad on the PCB, not an actual component. All of the circuitry for controlling the sensor is inside the PSoC device.

Cypress’s CapSense solution offers system designers numerous advantages over capacitive sensing products built around modules and sub-assemblies, including increased flexibility, reduced board space and lower cost. Because of the unique PSoC architecture, designers can easily integrate multiple functions (e.g., LED drivers and LCD displays), in addition to capacitive sensing. The PSoC CapSense solution also delivers benefits such as easy communications using either I2C or SPI interfaces, the ability to implement both trackpad (x-y matrix) and linear slider applications with the same device, and the ability to make quick design changes using the flash-based PSoC architecture.

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