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CPT112S

Silicon Laboratories
Part Number CPT112S
Manufacturer Silicon Laboratories
Description Capacitive Touch Controller
Published Feb 12, 2016
Detailed Description TouchXpress™ Family CPT112S Data Sheet The CPT112S device, part of the TouchXpress family, is designed to quickly add c...
Datasheet PDF File CPT112S PDF File

CPT112S
CPT112S

Overview
TouchXpress™ Family CPT112S Data Sheet The CPT112S device, part of the TouchXpress family, is designed to quickly add capacitive touch via an I2C interface by eliminating the firmware complexity and reducing the development time for capacitive sensing applications.
Supporting up to 12 capacitive sensor inputs in a 3 mm x 3 mm QFN package, the CPT112S is a highly-integrated device that interfaces via I2C to the host processor to provide a simple solution for adding capacitive touch.
The device also comes with advanced features like moisture immunity, wake-on proximity, and buzzer feedback for an enhanced user experience.
No firmware development is needed, and all the capacitive touch sense parameters can be configured using a simple GUI-based configurator.
By eliminating the need for complex firmware development, the CPT112S device enables rapid user interface designs with minimal development effort.
The CPT112S device is ideal for a wide range of capacitive touch applications including the following: • Home appliances • Instrument / Control panels • White goods • Medical equipment • Consumer electronics • Lighting control KEY FEATURES • No firmware development required • Simple GUI-based configurator • 12 Capacitive Sensor inputs with programmable sensitivity • Configurable multi-button slider • I2C interface to communicate to the host • Lowest power capacitive sense solution • Active — 200 µA • Sleep — 1 µA • Wake on proximity • Superior noise immunity: SNR up to 270:1 • Moisture immunity • Mutually-exclusive touch qualifier • Button touch time-out to avoid false touches • Buzzer output for audible touch feedback Input Features Capacitive Touch Sensing Features Proximity Wake Input Touch Qualification MutuallyExclusive Touch Qualifier Option for a Multi-Button Slider Configuration Profile for each Input Baselining Input Engine with 12 Inputs Low Power State Touch Time-Out Machine Timer Lowest power mode with feature operational: Active Optimize...


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