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User Module Datasheet: SmartSense™ Auto-tuning CapSense® Sigma-Delta Datasheet SmartSense V 1.60 (CY8C21x34B) | Cypress Semiconductor

User Module Datasheet: SmartSense™ Auto-tuning CapSense® Sigma-Delta Datasheet SmartSense V 1.60 (CY8C21x34B)

Last Updated: 
Jun 21, 2013
Version: 
1.60

Features and Overview

  • Implements CapSense® capacitive sensing in the CY8C21x34B family of PSoC® devices.
  • Auto-tunes configurable system parameters in runtime to account for sensor, IC, and PCB characteristics.
  • Supports up to 24 capacitive sensors and 4 sliders.
  • Supports parasitic sensor capacitance range of 5 pF to 45 pF.
  • Detects touches as low as 0.1 pF, that is, a finger can be detected through up to 15 mm of glass or 5 mm of plastic.
  • High immunity to AC line noise, other EMI, and power supply noise.
  • Supports capacitive sensors configured as independent buttons and also as dependent arrays to form sliders.
  • Provides a diplexing option that allows assigning two slider elements for every dedicated I/O pin.
  • Supports slider resolution greater than the physical pitch through interpolation.
  • Provides shield electrode for reliable operation with high parasitic capacitance and also in the presence of  a water film.
  • Enables guided sensor and pin assignments using the SmartSense™ Wizard.
  • Supports proximity sensing up to a range of 5 cm (with onboard PCB trace).