Cypress Semiconductor Corp CY8CMBR2010-24LQXIT

Overview

CY8CMBR2010-24LQXIT from Infineon Technologies (formerly Cypress) is a hardware-configurable capacitive touch controller supporting up to 10 independent CapSense buttons and 10 active-low general-purpose outputs (GPOs), operating from 1.71 V to 5.5 V with SmartSense™ Auto-Tuning, flanking sensor suppression (FSS), and system diagnostics. It drives LEDs directly, supports analog voltage output via external resistors, and targets battery-powered human interface applications in industrial and medical equipment.

For engineers reviewing the CY8CMBR2010-24LQXIT datasheet, CY8CMBR2010-24LQXIT pinout, CY8CMBR2010-24LQXIT application, or CY8CMBR2010-24LQXIT equivalent, key selection considerations include its hardware-strapped configuration (no firmware required), 21 µA/button average current, 100 nA deep sleep current, 32-pin QFN package, and real-time noise immunity tuning across 5–40 pF parasitic capacitance range.

Technical Context

The device implements a self-contained capacitive sensing engine with integrated modulator (CMOD pin), auto-calibrated baseline tracking, and runtime parameter adjustment via SmartSense™. All 10 CapSense inputs feed dedicated internal sensing channels, each mapped one-to-one with a GPO output without software intervention.

Hardware configuration is performed at power-up via resistor-ladder strapping on 11 dedicated pins (e.g., ARST/EMC for noise immunity level, Toggle/FSS for FSS enable, LEDFading for analog voltage mode). No I²C/SPI interface or host processor dependency exists - it operates as a standalone touch-to-output bridge.

Key Specifications

Pinout & Package

32-pin Quad Flat No-leads (QFN) package, 5 mm × 5 mm body, 0.5 mm pitch, exposed thermal pad. Pin 1 marked by top-side dot; pin numbering follows standard counter-clockwise layout from top-left corner.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar capacitive touch controller applications.

Compared with AT42QT1070-MAHR and TTP223B-BA6, CY8CMBR2010-24LQXIT uniquely delivers 10-button scalability, hardware-based noise immunity tuning, built-in diagnostics, and analog voltage generation - making it the sole option among the three for robust, production-ready, firmware-free touch interfaces in space-constrained industrial and medical devices.

Availability

CY8CMBR2010-24LQXIT is available at Aetrix Electronics and suitable for medical device keypads, industrial control panels, portable diagnostic tools, and home health monitoring devices requiring stable component supply, long-term lifecycle support, and full traceability.

Supply support for CY8CMBR2010-24LQXIT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, sensing, and connectivity solutions for automotive, industrial, and IoT markets.

CY8CMBR2010 belongs to Infineon's CapSense® Express™ product line, designed specifically for rapid deployment of reliable, low-cost, firmware-free capacitive touch interfaces in resource-constrained embedded systems.

FAQ

Does CY8CMBR2010-24LQXIT require firmware programming or host microcontroller interaction?

No. The device is fully hardware-configured via external resistors on strapping pins (e.g., ARST/EMC, Toggle/FSS, LEDFading). All CapSense functionality - including button scanning, GPO activation, SmartSense™ tuning, and diagnostics - executes autonomously without any firmware, I²C, or SPI interface. It operates as a true plug-and-play touch-to-output bridge.

What is the minimum and maximum parasitic capacitance (CP) the device supports per button?

The CY8CMBR2010-24LQXIT supports a confirmed CP range of 5 pF to 40 pF per button, as validated by SmartSense™ Auto-Tuning across environmental variations. Operation outside this range may cause unreliable detection or failure of System Diagnostics at power-up. Layout guidelines recommend keeping CP below 30 pF for optimal noise margin in high-interference environments.

Can GPO pins drive LEDs directly, and what current capability do they provide?

Yes - all 10 GPO pins are strong-drive, active-low outputs capable of sinking ≥10 mA per pin (per datasheet DC characteristics), sufficient to drive standard 2–20 mA indicator LEDs directly with a series resistor. No external transistor or driver IC is needed. Each GPO mirrors its paired CSx button state, providing immediate visual feedback without timing latency.

How does the Serial Debug Data feature work, and what data does it output?

Serial Debug Data is a single-wire, asynchronous UART-like output on the Delay pin (when configured with specific resistor value). It transmits real-time diagnostic values including per-button signal-to-noise ratio (SNR), measured parasitic capacitance (CP), and baseline delta - enabling automated pass/fail testing during manufacturing without host MCU involvement or custom test fixtures.