You are here

CapSense® Controllers | Cypress

CapSense® Controllers

Cypress’s CapSense® technology consists of an advanced analog sensing channel and the Capacitive Sigma Delta (CSD) sensing algorithm.   This patented algorithm provides high sensitivity to ensure accurate touch in noisy environments, proximity distances of up to 30 cm, and allows for fast scan times.  Cypress has also developed the SmartSense™ algorithm, which provides for robust noise immunity and adaptation to changing environments, without the need for manual tuning.

Cypress’s CapSense® portfolio consists of the Mechanical Button Replacement (MBR) family.  The MBR family requires no firmware development and allows for easy development for Capacitive sensing systems using Cypress’s GUI-based software tool, EZ-Click™.  The latest solution in the MBR family is the CapSense MBR3 device.

Features supported by the CapSense MBR3 include:

  • Buttons and sliders (up to 16 GPIOs for buttons or slider use)
  • General Purpose Output pins (GPOs) that can be used for external feedback (such as LEDs and buzzers) when the capacitive button is touched
  • Register configurable, which can be accomplished using Cypress’s GUI-based software tool, EZ-Click™
  • Pre-programmed firmware (no need to develop firmware)
  • SmartSense™ auto tuning that allows your CapSense® system to adapt to changing environments, variations in PCB manufacturing, and eliminates the need for manual tuning.
  • Ultra-low power with industry’s widest voltage range
  • Industry’s best solution for liquid tolerance to prevent false touches in wet/moist environments
  • Industry’s best solution for proximity sensing to replace external sensors (for example, IR sensors in Smartphones)

The CapSense® technology can also be enabled in Cypress’s Programmable System on Chip (PSoC®) devices.  PSoC® is the world's only programmable embedded System-on-Chip integrating an MCU core, high-performance Programmable Analog Blocks, PLD-based Programmable Digital Blocks, and Programmable Interconnect and Routing.  This device allows for the user to implement Digital and Analog features, while also having the option to use CapSense®.  For more information on these devices, please visit the PSoC Webpage here.


Buy the $25 CY3280-MBR3 kit to evaluate the MBR3 solution’s features including configurability, button performance, proximity sensing and liquid-tolerance



Download EZ-Click for free and easily design your CapSense system

Design Guide

Download the CapSense MBR3 Design Guide for guidelines on designing with your MBR3 solution



Cypress holds Quarterly trainings for the MBR3 device.  In this half day workshop, you will learn to use the 

EZ-Click SW GUI and the CY3280-MBR3 kit to develop a CapSense system (buttons&sliders/proximity sensor/liquid tolerance/SmartSense).

Register for a CapSense MBR3 workshop in your area



  • CapSense MBR3 requires no firmware development
  • EZ-Click™ GUI-based software tool configures devices without the need to write any code


​SmartSense Auto-Tuning

  • A CapSense algorithm that continuously adapts to system, manufacturing and environmental changes
  • Eliminates the need for manual tuning during all product design phases



Robust Liquid Tolerance

  • CapSense MBR3 works under water droplets, rain, mist and other liquids
  • Ensures no false touches even under streaming water


Industry’s Best Capacitive Proximity Sensing

  • Achieve up to 30cm in proximity sensing distance
  • Implement advanced features like wake-on-approach to support ultra-low power applications


Reliable Performance

  • Advanced sensing algorithms ensure reliable performance even in noisy environments
  • Implement designs with Signal-to-Noise Ratio (SNR) of > 100:1



Introduction to CapSense MBR3

The CapSense MBR3 family is the world’s easiest capacitive-sensing solution that allows you the design with the click of a mouse using our GUI-based software tool, EZ-Click™. 

CapSense MBR3 combines the best of CapSense features including SmartSense™ Auto-Tuning, robust water tolerance and best-in-class proximity sensing while delivering reliable performance under all conditions.

Introduction to the CY3280-MBR3 CapSense MBR3 Evaluation Kit

Watch this video to learn how you can use the CapSense MBR3 Evaluation Kit to implement capacitive buttons and proximity sensors,and evaluate features like SmartSense Auto-tuning and water tolerance.

Introduction to EZ-Click Software Tool

Watch this video to learn how you can implement a CapSense design

 in minutes using the EZ-Click™ GUI-based software tool.


Register for a CapSense MBR3 workshop in your area