CY8CMBR3116-LQXI

Overview

The CY8CMBR3116-LQXI is a CapSense Express controller supporting up to 16 capacitive sensing inputs, including buttons and proximity sensors. It operates within a voltage range of 1.71 V to 5.5 V and functions across an industrial temperature range of -40 °C to +85 °C. The device features SmartSense Auto-tuning for continuous performance compensation and liquid tolerance to prevent false touches. It communicates via an I2C interface with support for up to 400 kHz and includes system diagnostics for fault detection.

Feature Summary

• Register-configurable architecture eliminates firmware development requirements
• SmartSense Auto-tuning algorithm dynamically maintains optimal sensor performance
• Liquid tolerance capability prevents false touches in wet conditions
• High-sensitivity CSD PLUS sensing algorithm ensures superior noise immunity

Applications

• Capacitive touch user interfaces replacing mechanical buttons
• Proximity sensing solutions requiring wake-on-approach functionality
• Industrial control panels operating in noisy or wet environments

Procurement Notes

Verify the specific ordering suffix against official Infineon documentation to ensure correct package type and tape/reel configuration. Confirm that the component meets RoHS compliance standards required for your assembly process. Cross-reference the datasheet revision number to ensure compatibility with existing design files and software tools.

Selection Notes

Select this model when the design requires up to 16 independent sensing channels without firmware overhead. Ensure the application environment supports the specified operating voltage and temperature ranges. Verify that the host processor can accommodate the I2C communication protocol and interrupt requirements defined in the datasheet.

Part Context

This component belongs to the CY8CMBR3xxx family of CapSense Express controllers originally developed by Cypress Semiconductor. Following the acquisition by Infineon Technologies, the product line continues under the Infineon portfolio with maintained part numbering and datasheet continuity. The device represents a register-configurable solution for rapid capacitive touch implementation.

Replacement Considerations

Direct substitutes within the same family include CY8CMBR3110 and CY8CMBR3108, though these offer fewer sensing channels. Verify pinout compatibility and feature set alignment before substitution. No other external part numbers are confirmed as direct replacements in public documentation.