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User Module Datasheet: CSA Electromagnetic Datasheet CSA_EMC V 1.50 (CY8C20x34, CY8C20x24, CY8C20x66, CY8C20x36, CY8C20336AN, CY8C20436AN, CY8C20636AN, CY8C20xx6AS, CY8C20x46, CY8C20x96, CYONSFN2053, CYONSFN2061, CYONSFN2151, CYONSFN2161, CYONSFN2162... | Cypress Semiconductor

User Module Datasheet: CSA Electromagnetic Datasheet CSA_EMC V 1.50 (CY8C20x34, CY8C20x24, CY8C20x66, CY8C20x36, CY8C20336AN, CY8C20436AN, CY8C20636AN, CY8C20xx6AS, CY8C20x46, CY8C20x96, CYONSFN2053, CYONSFN2061, CYONSFN2151, CYONSFN2161, CYONSFN2162...

Last Updated: 
Jun 21, 2013
Version: 
1.50

Features and Overview

  • Scan 1 to 28 capacitive sensors
  • Scan capacitive sliders with 2 to 28 elements
  • Slider physical resolution doubling using diplexing
  • Slider interpolated resolution up to 1 part in 65535
  • Generate touchpad using multiple slider sensors
  • Adjustable sensor sensitivity, detection threshold, and sampling rate
  • Guided sensor and pin assignments using the CSA_EMC Wizard
  • Integrated baseline update algorithm for handling temperature changes
  • Compensate for environmental and physical sensor variations
     

The CapSense® Successive Approximation Electromagnetic Compatibility (CSA_EMC) User Module implements an array of capacitive touch sensors using switched capacitor circuitry, an analog multiplexer, digital counting functions, and high level software routines to compensate for environmental and physical sensor variations. The sensor array can consist of combinations of independent sensors, sliding sensors, and touchpads implemented as a pair of orthogonal sliding sensors. High level software routines accommodate slider diplexing. Slider diplexing allows a single pin to measure two electrical sensors in two different physical locations. Diplexing provides resolution enhancement of the slider without the cost of an additional I/O.