Features and Overview
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Immune to GPIO current transient, Vdd fluctuation, entry and exit from sleep, and IDAC RTS noise.
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Implements CapSense® capacitive sensing using sigma-delta data conversion.
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Configurable system parameters allow tuning to optimize performance in a broad range of applications.
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Supports up to 35 capacitive sensors or 6 sliders.
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Capable of detecting touches as low as 0.1 pF, that is, detecting a finger is possible through up to 15 mm of glass or 5mm of plastic.
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Supports capacitive sensors configured as independent buttons and/or as dependent arrays to form sliders.
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Effective number of slider elements can double the number of dedicated I/O pins using diplexing technique.
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For more, see pdf.
The Capacitive Sensing using a Sigma Delta Modulator (CSD) User Module is based on the differential capacitive sensing method. This user module uses the Analog MUX Bus for connecting a capacitive sensing analog circuitry to any PSoC pin.
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