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User Module Datasheet: AUTOTUNING CAPSENSE® SIGMA-DELTA DATASHEET, CSDAUTO V 1.0 (CY8C20X66, CY8C20X36, CY8C20336AN, CY8C20436AN, CY8C20636AN, CY8C20X46, CY8C20X96, CY8C20XX6AS, CY7C645XX, CY7C643/4/5XX, CY7C60424, CY7C6053X, CYONS2110, CYONS21L1T, C... | Cypress Semiconductor

User Module Datasheet: AUTOTUNING CAPSENSE® SIGMA-DELTA DATASHEET, CSDAUTO V 1.0 (CY8C20X66, CY8C20X36, CY8C20336AN, CY8C20436AN, CY8C20636AN, CY8C20X46, CY8C20X96, CY8C20XX6AS, CY7C645XX, CY7C643/4/5XX, CY7C60424, CY7C6053X, CYONS2110, CYONS21L1T, C...

Last Updated: 
Dec 15, 2014
Version: 
1.0

Features and Overview

  • AutoTuning algorithms optimize the operational parameters at runtime based on the parasitic capacitance of each sensor.
  • Scans 1 to 36 capacitive sensors.
  • Capable of detecting 0.1 pF touch with parasitic sensor capacitance (Cp) up to 50 pF, as long as the layout guidelines given in the application note “Capacitance Sensing - Layout Guidelines for PSoC CapSense”, AN2292, are followed.
  • Sensing possible through up to a 15 mm glass overlay.
  • High immunity to AC mains noise, other EMI, and power supply voltage changes.
  • Supports capacitive sensors configured as independent buttons, proximity sensors, and/or as dependent arrays to form sliders. Sliders and proximity sensors not fully supported in this beta version.
  • Effective number of slider elements can double the number of dedicated IO pins using diplexing technique.
  • Supports slider resolution greater than physical pitch through interpolation.
  • Touchpads can be implemented as pairs of interwoven orthogonal sliders.
  • Shield electrode provides for reliable operation with high parasitic capacitance and/or in the presence of water film.
  • Guided sensor and pin assignments using the CSDAUTO Wizard.
  • PC GUI application support for raw data monitoring in real-time.

The CSDAUTO (Autotuning CapSense® using a Sigma-Delta Modulator) User Module provides capacitance sensing using the switched capacitor technique with a sigma-delta modulator to convert the sensor capacitance into digital code.

Note This user module supports only C language projects. ASM (Assembly language) projects are not supported.

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