The CY8CMBR3xxx CapSense® Express™ controllers enable advanced, yet easy-to-implement, capacitive touch sensing user
interface solutions. This register-configurable family, which supports up to 16 capacitive sensing inputs, eliminates time-consuming
firmware development. These controllers are ideal for implementing capacitive buttons, sliders, and proximity sensing solutions with
minimal development-cycle times.
The CY8CMBR3xxx family features an advanced analog sensing channel and the Capacitive Sigma Delta PLUS (CSD PLUS) sensing
algorithm, which delivers a signal-to-noise ratio (SNR) of greater than 100:1 to ensure touch accuracy even in extremely noisy
environments. These controllers are enabled with Cypress’s SmartSense™ Auto-tuning algorithm, which compensates for
manufacturing variations and dynamically monitors and maintains optimal sensor performance in all environmental conditions. In
addition, SmartSense Auto-tuning enables a faster time-to-market by eliminating the time-consuming manual tuning efforts during
development and production ramp-up.
Advanced features, such as LED brightness control, proximity sensing, and system diagnostics, save development time. These
controllers enable robust liquid-tolerant designs by eliminating false touches due to mist, water droplets, or streaming water. The
CY8CMBR3xxx controllers are offered in a variety of small form factor industry-standard packages.
The ecosystem for the CY8CMBR3xxx family includes development tools—software and hardware—to enable rapid user interface
designs. For example, the EZ-Click Customizer tool is a simple graphical user interface software for configuring the device features
through the I2C interface. This tool also supports CapSense data viewing to monitor system performance and support validation and
debugging. Another tool, the Design Toolbox, simplifies circuit board layout by providing design guidelines and layout
recommendations to optimize sensor size, trace lengths, and parasitic capacitance. To quickly evaluate the CY8CMBR3xxx family
features, use the CY3280-MBR3 Evaluation Kit.