CY8CMBR2010-24LQXIT

Overview

The CY8CMBR2010-24LQXIT is a hardware-configurable capacitive touch controller supporting up to ten buttons. It features SmartSense Auto-Tuning for dynamic parameter adjustment without software tools. The device provides ten active-low General Purpose Outputs (GPOs) and operates within a voltage range of 1.71 V to 5.5 V. It includes advanced features such as Flanking Sensor Suppression, Noise Immunity, and System Diagnostics. Power consumption averages 21 µA per button with a Deep Sleep current of 100 nA. The component is housed in a 32-pin QFN package measuring 5 mm × 5 mm × 0.6 mm.

Feature Summary

• Hardware-configurable operation eliminates the need for firmware programming or external software tools.
• SmartSense Auto-Tuning dynamically adjusts parameters to maintain performance across varying environmental conditions.
• Integrated System Diagnostics perform power-on self-tests to detect faults such as button shorts or improper capacitor values.

Applications

• Consumer electronics requiring simple capacitive user interfaces
• Industrial control panels needing robust noise immunity
• Medical devices utilizing hardware-configurable safety diagnostics

Procurement Notes

Verify the specific ordering suffix against official Infineon documentation to ensure correct package and temperature grade compatibility. Confirm that the hardware configuration resistors match the intended feature set before production deployment. Check for continuity of support status as Cypress products transitioned to the Infineon portfolio.

Selection Notes

Select this component when a zero-code solution for capacitive sensing is required. Ensure the design supports the necessary external resistor network for pin configuration. Verify that the parasitic capacitance of the touch sensors remains within the specified operational range for reliable detection.

Part Context

This part belongs to the CapSense Express family developed by Cypress Semiconductor, now part of Infineon Technologies. It is designed to replace mechanical switches in applications where rapid time-to-market and reduced engineering effort are critical priorities.

Replacement Considerations

Consult official Infineon cross-reference lists for verified substitutes. Do not assume functional equivalence with other CapSense controllers without verifying pinout and configuration logic compatibility.

FAQ

How is the device configured if no software is used?

Configuration is achieved entirely through external resistors connected to specific hardware pins during power-up.

What happens if a button fails the power-on self-test?

The device disables the faulty button and sends a 5 ms pulse on the corresponding GPO to indicate the failure.

Can the device drive LEDs directly?

Yes, the GPOs provide strong drive capabilities suitable for sinking LED currents directly.