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Cypress Semiconductor Corp CY8CMBR3002-SX1I
- Part No.:
- CY8CMBR3002-SX1I
- Manufacturer:
- Cypress Semiconductor Corp
- Category:
- Sensor, Capacitive Touch
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY8CMBR3002-SX1I.pdf
- Description:
- IC CAP SENSE CTRLR 2CAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:659
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Product details
Overview
CY8CMBR3002-SX1I from Infineon Technologies (formerly Cypress) is a register-configurable CapSense Express™ capacitive touch controller supporting two sensing inputs, SmartSense Auto-tuning, and I²C slave interface. It delivers >100:1 SNR, 0.1 pF sensitivity, and liquid-tolerant operation for robust button and proximity sensing in industrial HMI applications.
For engineers reviewing the CY8CMBR3002-SX1I datasheet, CY8CMBR3002-SX1I pinout, CY8CMBR3002-SX1I application, or CY8CMBR3002-SX1I equivalent, key selection criteria include sensing input count (2), SmartSense auto-calibration capability, I²C timing compliance (up to 400 kHz), deep-sleep current (22 µA per sensor), and SOIC-8 package compatibility with PCB layout constraints.
Technical Context
The CY8CMBR3002-SX1I implements the Capacitive Sigma Delta PLUS (CSD PLUS) sensing algorithm with dedicated analog front-end circuitry optimized for low-noise, high-SNR capacitive measurement. Its SmartSense Auto-tuning continuously adjusts baseline and thresholds using real-time environmental compensation without host intervention.
It operates as an I²C slave with hardware address match wake-up, supports up to 400 kHz clock rate, and provides interrupt-driven status reporting via ATTENTION line. The device integrates system diagnostics for CMOD capacitor validation, sensor short detection, and parasitic capacitance (5–45 pF) range monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sensing Inputs | 2 independent capacitive sensing channels for buttons or proximity detection |
| SNR Performance | >100:1 signal-to-noise ratio ensures reliable touch detection under EMI stress |
| Sensitivity | 0.1 pF minimum detectable change; supports glass overlays up to 15 mm thick |
| I²C Interface | Slave mode, up to 400 kHz; no clock stretching or bus stalling during transactions |
| Power Supply | 1.71 V to 5.5 V operation; deep sleep current 22 µA per sensor at 120-ms refresh |
| Operating Temp | –40 °C to +85 °C industrial temperature range for embedded control environments |
| Parasitic Cap Range | 5–45 pF sensor CP tolerance enables flexible PCB trace design and material selection |
Pinout & Package
Package: 8-pin SOIC (150 mil), surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | 1.71–5.5 V main supply rail; decoupling capacitor required |
| GND | Ground reference | Analog/digital common return; must be low-impedance plane |
| SCL | I²C clock input | Open-drain, accepts up to 400 kHz; requires external pull-up |
| SDA | I²C data bidirectional | Open-drain, supports standard/fast-mode I²C protocol |
| ATTN | Interrupt output | Active-low open-drain line signaling sensor state changes to host |
| RES | Reset input | Active-low asynchronous reset; internal pull-up enabled |
| NC | No connect | Pin 7 is unconnected; must be left floating or tied to GND per layout guidelines |
| NC | No connect | Pin 8 is unconnected; not internally bonded; avoid routing traces |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense Auto-tuning | Real-time baseline and threshold adaptation eliminates manual tuning across production batches and environmental drift |
| Liquid tolerance | Detects true touch while rejecting false triggers from mist, droplets, or streaming water via dynamic noise rejection |
| Flanking Sensor Suppression (FSS) | Prevents false actuation on adjacent sensors when spacing is tight (e.g., compact keypad layouts) |
| System diagnostics | On-chip validation of CMOD value, sensor shorts, and out-of-range parasitic capacitance for production test and field reliability |
| Wake-on-address match | Enables ultra-low-power deep sleep with selective wake-up only when I²C traffic targets this device's address |
Applications
| Industrial Control Panel | Home Appliance Interface |
|---|---|
Use Scenario: Touch-sensitive control panel on HVAC systems or programmable logic controllers requiring EMI resilience and long-term calibration stability. IC Role / Device Role / Timing Role: Primary capacitive sensing controller managing two dedicated user-input zones (e.g., power toggle + mode select). Use Value: SmartSense Auto-tuning maintains consistent response across temperature swings and aging, eliminating recalibration service calls. | Use Scenario: Waterproof touch interface on washing machine or oven door with overlay thickness up to 15 mm glass. IC Role / Device Role / Timing Role: Standalone touch controller handling proximity wake-up and button confirmation with liquid-tolerant firmware-free operation. Use Value: CSD PLUS algorithm and >100:1 SNR prevent false triggers from condensation or cleaning fluids during operation. |
| Medical Device Keypad | IoT Sensor Node UI |
Use Scenario: Sterilizable, sealed front-panel interface on portable diagnostic equipment where mechanical switches are prohibited. IC Role / Device Role / Timing Role: Dual-input capacitive controller providing tactile feedback via buzzer output and ATTENTION-driven host interrupt. Use Value: Integrated system diagnostics verify sensor integrity before each use-critical for safety-critical UI validation. | Use Scenario: Battery-powered smart sensor node with minimal BOM count needing low-power touch wake-up and status indication. IC Role / Device Role / Timing Role: Ultra-low-power capacitive controller operating at 22 µA/sensor in deep sleep, waking host only on valid touch event. Use Value: Wake-on-I²C-address-match reduces average system current versus polling-based architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touch controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT42QT1011-MAHR | Single-channel QTouch® controller; no SmartSense; fixed threshold; 1.8–5.5 V supply | Lacks auto-tuning and diagnostics; suited for cost-sensitive, static-layout designs with stable CP | Select when development time and environmental variability are low, and BOM cost is primary constraint |
| STMPE1600QTR | 16-channel I²C touch controller; no built-in auto-tuning; requires host firmware tuning | Higher channel count but demands external MCU resources for calibration and noise management | Select when scaling beyond 2 inputs is anticipated and host processing bandwidth is available |
Compared with AT42QT1011-MAHR and STMPE1600QTR, the CY8CMBR3002-SX1I uniquely combines zero-firmware configuration, real-time SmartSense adaptation, and integrated diagnostics-reducing qualification effort and field failure risk in variable-environment deployments.
Availability
CY8CMBR3002-SX1I is available at Aetrix Electronics and suitable for industrial control panels, home appliance interfaces, medical device keypads, and IoT sensor node UIs requiring stable component supply and long-lifecycle support.
Supply support for CY8CMBR3002-SX1I 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 security solutions for industrial, automotive, and IoT markets.
The CY8CMBR3xxx family was originally developed by Cypress Semiconductor and continues under Infineon's CapSense® portfolio to deliver turnkey, register-configurable capacitive touch solutions for rapid HMI deployment without firmware development.
FAQ
What is the maximum overlay thickness supported by CY8CMBR3002-SX1I?
The CY8CMBR3002-SX1I supports up to 15 mm of glass or 5 mm of plastic overlay thickness due to its 0.1 pF sensitivity and CSD PLUS sensing algorithm. This is validated across the full operating temperature range (–40 °C to +85 °C) and confirmed in the Rev. *Q datasheet, page 6.
Does CY8CMBR3002-SX1I require external firmware or host processor tuning?
No. The device is fully register-configurable via I²C and features SmartSense Auto-tuning, which autonomously calibrates thresholds and baselines in real time. No host firmware development or manual tuning is required-configuration is performed once using EZ-Click Customizer tool.
How does the device handle water or condensation on the touch surface?
It uses patented liquid-tolerance algorithms within the CSD PLUS engine to distinguish true touch from water artifacts. Combined with Flanking Sensor Suppression and dynamic noise filtering, it rejects false triggers from mist, droplets, and streaming water without requiring special overlay coatings or drain patterns.
What diagnostic capabilities are built into CY8CMBR3002-SX1I?
The device monitors modulating capacitor (CMOD) value validity, detects sensor shorts, and validates parasitic capacitance (CP) within the 5–45 pF operational range. These diagnostics are accessible via I²C registers and reported through the ATTENTION line, enabling automated production testing and field health monitoring.
CY8CMBR3002-SX1I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Cypress Semiconductor Corp
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- CAPSENSE™ Express™ SmartSense™
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Buttons
- Proximity Detection:
- Yes
- Number of Inputs:
- Up to 2
- LED Driver Channels:
- Up to 1
- Interface:
- Open Drain
- Resolution:
- -
- Voltage - Supply:
- 1.8V ~ 5.5V
- Current - Supply:
- 140mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
CY8CMBR3002-SX1I FAQ
1.How can I place an order for CY8CMBR3002-SX1I through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8CMBR3002-SX1I on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CY8CMBR3002-SX1I reliable?
The price and inventory of CY8CMBR3002-SX1I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8CMBR3002-SX1I is usually 5 days.
3.What payment methods are accepted for CY8CMBR3002-SX1I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8CMBR3002-SX1I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8CMBR3002-SX1I?
CY8CMBR3002-SX1I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8CMBR3002-SX1I order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CY8CMBR3002-SX1I?
For technical support, including CY8CMBR3002-SX1I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8CMBR3002-SX1I requirements.
6.How does Aetrix verify that CY8CMBR3002-SX1I is sourced from the original manufacturer or authorized distributors?
All CY8CMBR3002-SX1I products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY8CMBR3002-SX1I meets industry standards.
7.What is the process for return or replacement of CY8CMBR3002-SX1I?
All CY8CMBR3002-SX1I units undergo pre-shipment inspection (PSI). If there is an issue with CY8CMBR3002-SX1I, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CY8CMBR3002-SX1I part is unused and in its original packaging.
Return procedure for CY8CMBR3002-SX1I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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