CY8CMBR3102-SX1IT

Overview

The CY8CMBR3102-SX1IT is a register-configurable capacitive touch controller from the CapSense Express family, designed for applications requiring two sensing inputs. It utilizes the CSD PLUS algorithm to achieve high sensitivity and noise immunity without firmware development. The device supports up to two buttons or proximity sensors and communicates via an I2C interface. It operates within a voltage range of 1.71 V to 5.5 V and functions in temperatures from -40 °C to +85 °C. The component is housed in an 8-pin SOIC package.

Feature Summary

• SmartSense Auto-tuning eliminates manual tuning by dynamically maintaining optimal sensor performance across environmental variations.
• Liquid tolerance capabilities prevent false touches caused by water droplets, mist, or streaming water through shield electrode configurations.
• System diagnostics detect fault conditions such as improper modulating capacitor values, out-of-range parasitic capacitance, and sensor shorts.

Applications

• Capacitive button interfaces replacing mechanical switches
• Proximity detection systems with wake-on-approach functionality
• Low-power battery-operated user interface devices

Procurement Notes

Verify the specific ordering suffix against official Infineon documentation to ensure correct packaging and temperature grade. Confirm that the selected variant matches the required pinout and feature set for the target application design.

Selection Notes

Select this model when only two sensing channels are required. Compare against the CY8CMBR3002 if GPO output or I2C communication is not needed, as the CY8CMBR3102 includes these advanced features for host integration.

Part Context

This component belongs to the CY8CMBR3xxx family of CapSense Express controllers. It shares core architecture with models like the CY8CMBR3108 and CY8CMBR3116 but offers a reduced channel count suitable for simpler interfaces.

Replacement Considerations

The CY8CMBR3002-SX1IT serves as a functional substitute if I2C communication and General Purpose Outputs are not utilized in the design.

FAQ

Does the CY8CMBR3102 support sliders?

No, the CY8CMBR3102 supports a maximum of two buttons or proximity sensors and does not support slider configurations.

How does the device handle wet conditions?

It provides liquid tolerance by allowing the configuration of shield electrodes and guard sensors to eliminate false touches from water or moisture.