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AN56691 - CapSense® Express™ - Creating Reference Designs with 1CS/2CS Button Devices | Cypress Semiconductor

AN56691 - CapSense® Express™ - Creating Reference Designs with 1CS/2CS Button Devices

Last Updated: 
Feb 23, 2016
Version: 
*E
This is an Obsolete Application Note
The document AN56691 - CapSense® Express™ - Creating Reference Designs with 1CS/2CS Button Devices has been marked as obsolete. The obsolete version of this application note is still available with the below description but may not be complete or valid any longer. If you have any questions or require support in regards to the below application note content, please click here and create a technical support case.
CapSense® Express™ family of configurable devices provides a quick way to implement touch sensing functionality. The one- and two-button devices can easily replace mechanical switches in applications requiring low pin count devices. This application note demonstrates a reference schematic and layout design for these devices and also explains how to configure the functionality through PSoC® Designer™ 5.0 SP6.
Introduction

CapSense Express is a family of high-performance, fixedfunction devices that provides a robust solution for simple designs (involving few buttons, slider, LEDs and general purpose I/Os). CapSense Express controllers support two capacitive sensing (CapSense) buttons and two generalpurpose outputs in CY8C20121 and one CapSense button and one general-purpose output in CY8C20111. The host controller can configure these as I2C slave devices and read the sensor information in real time. A software tool is also provided for achieving optimal performance in real time using a GUI. These are plug and play devices with factory default settings. The 1B/2B devices achieve CapSense functionality without requiring any external components. The ease of use of these devices leads to reduced cost and less time to market the solution.