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Water tolerance in Touch-Sensing Software library

Posted: 10 Dec 2013     Print Version  Bookmark and Share

Keywords:Xtrinsic  Touch-Sensing Software  measurements  capacitive touch  keypads 

The water tolerance feature in the Xtrinsic Touch-Sensing Software (TSS) library is a tool to filter out changes in measurements due to the presence of water in capacitive touch keypads.

This application note describes how the water tolerance feature works, as well as the hardware requirements for proper operation. It also shows some examples of situations in which the water tolerance feature will correctly work and some other cases in which a mixture of water tolerance feature and user software involvement is needed to solve the condition. Additionally, some mechanical recommendations are provided to help improve application robustness.

View the PDF document for more information.

Originally published by Freescale Semiconductor at as "In-Depth Understanding of Water Tolerance Feature in Touch-Sensing Software Library".

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