CY8CMBR2110-24LQXIT

Overview

The CY8CMBR2110 is a register-configurable CapSense Express controller supporting up to ten capacitive sensing buttons and ten general-purpose outputs (GPOs). It operates within a voltage range of 1.71 V to 5.5 V and features SmartSense Auto-Tuning for dynamic parameter adjustment. The device includes an I2C interface with speeds up to 100 kHz, low power consumption of 23 µA per button in run mode, and deep sleep current of 100 nA. It utilizes a 32-pin QFN package measuring 5 mm × 5 mm × 0.6 mm and supports industrial temperatures from –40 °C to +85 °C.

Feature Summary

• SmartSense Auto-Tuning algorithm dynamically adjusts parameters to maintain performance across varying environmental conditions without manual tuning.
• Flanking Sensor Suppression (FSS) ensures robust sensing by preventing multiple button triggers in designs with closely spaced inputs.
• Advanced LED effects including configurable power-on sequences, touch-triggered breathing patterns, and variable on-time after release.
• Integrated system diagnostics detect faults such as button shorts or improper capacitor values during power-up to simplify production testing.

Applications

• Consumer electronics requiring capacitive user interfaces
• Industrial control panels needing noise immunity
• Medical devices utilizing sterile touch controls

Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature grade. Confirm that the EZ-Click Customizer tool version is compatible with the latest firmware configurations. Ensure host processor APIs are integrated correctly for runtime configuration if applicable. Check datasheet revisions for any updates to electrical specifications or pin definitions before finalizing procurement.

Selection Notes

Select this component when a firmware-free capacitive solution is required. It is suitable for designs needing direct LED driving capabilities via GPOs. Consider its wide operating voltage range for battery-powered applications. Evaluate the need for Flanking Sensor Suppression if button spacing is limited. Verify I2C bus speed requirements against the 100 kHz maximum specification.

Part Context

This part belongs to the Cypress/Infineon CapSense Express family, designed to simplify capacitive touch integration. It replaces traditional mechanical switches with reliable digital sensing. The series emphasizes ease of use through graphical configuration tools and eliminates the need for complex microcontroller programming for basic touch functions.

Replacement Considerations

Check for CY8CMBR2xxx series variants with different button counts. Verify compatibility with existing PCB layouts due to potential pinout differences. Ensure host software can support the specific I2C communication protocol used by the replacement model.