My Inquiry
My Account
Infineon Technologies CY8CMBR3102-SX1I
- Part No.:
- CY8CMBR3102-SX1I
- Manufacturer:
- Infineon Technologies
- Category:
- Sensor, Capacitive Touch
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY8CMBR3102-SX1I.pdf
- Description:
- IC CAP SENSE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,966
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8CMBR3102-SX1I from Infineon Technologies (formerly Cypress Semiconductor) is a register-configurable CapSense Express™ capacitive touch controller supporting 2 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 consumer HMI applications.
For engineers reviewing the CY8CMBR3102-SX1I datasheet, CY8CMBR3102-SX1I pinout, CY8CMBR3102-SX1I application, or CY8CMBR3102-SX1I equivalent, key selection criteria include I²C address configuration, parasitic capacitance range (5–45 pF), deep-sleep current (22 µA per sensor at 120-ms refresh), SmartSense runtime calibration, and industrial temperature support (–40 °C to +85 °C).
Technical Context
The CY8CMBR3102-SX1I implements the Capacitive Sigma Delta PLUS (CSD PLUS) sensing algorithm with dedicated analog front-end circuitry for high-precision delta-sigma conversion. Its SmartSense Auto-tuning continuously adjusts baseline, threshold, and sensitivity parameters without host intervention.
It operates as an I²C slave (up to 400 kHz) with wake-on-hardware address match, supports flanking sensor suppression (FSS), and provides system diagnostics for CMOD capacitor validation, CP out-of-range detection, and sensor short monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sensing Inputs | 2 independent capacitive sensing channels for buttons or proximity detection |
| SNR | >100:1 - ensures reliable touch detection under conducted/radiated EMI |
| Sensitivity | 0.1 pF resolution - enables detection through 15 mm glass or 5 mm plastic overlays |
| Parasitic Capacitance Range | 5–45 pF - accommodates wide PCB layout variation without recalibration |
| I²C Speed | Up to 400 kHz - supports fast host polling and configuration updates |
| Supply Voltage | 1.71 V to 5.5 V - interoperable with 1.8 V, 3.3 V, and 5 V host systems |
| Operating Temp | –40 °C to +85 °C - qualified for industrial and extended-temperature consumer use |
Pinout & Package
The CY8CMBR3102-SX1I is housed in an 8-pin SOIC package (150 mil width, 1.27 mm pitch), with exposed pad omitted. Pin functions are validated per Cypress Datasheet 001-85330 Rev. *Q (Page 14).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | 1.71–5.5 V main supply; decoupling capacitor required |
| GND | Ground reference | Analog/digital common return; low-impedance connection critical for noise immunity |
| SCL | I²C clock input | Open-drain, requires external pull-up; supports up to 400 kHz |
| SDA | I²C data I/O | Open-drain, bidirectional; shares pull-up with SCL |
| INT | Interrupt output | Active-low open-drain attention line signaling sensor state change to host |
| SENSE0 | Capsense input 0 | Connects directly to electrode; supports 5–45 pF parasitic capacitance |
| SENSE1 | Capsense input 1 | Independent second electrode channel; identical electrical characteristics to SENSE0 |
| AXRES | Reset input | Active-low asynchronous reset; internal pull-up; optional external pull-down for manual reset |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense Auto-tuning | Runtime calibration of baseline, threshold, and sensitivity eliminates manual tuning across production batches and environmental drift |
| Liquid tolerance | Detects intentional touch while rejecting false triggers from mist, droplets, or streaming water via adaptive signal processing |
| Flanking Sensor Suppression (FSS) | Prevents false actuation in closely spaced electrodes by dynamically masking adjacent sensor response during active detection |
| System diagnostics | Real-time validation of CMOD value, CP range, and sensor shorts-enables field-reliable self-test capability |
| Deep Sleep mode | Ultra-low-power state with wake-on-INT or I²C address match; maintains configuration memory without host interaction |
Applications
| Smart Home Remote Control | Industrial Panel Button Interface |
|---|---|
Use Scenario: Touch-sensitive remote with two dedicated function keys (e.g., power and volume) operating behind 3 mm acrylic overlay in humid indoor environments. IC Role / Device Role / Timing Role: Capacitive sensing controller performing real-time electrode scanning, noise rejection, and interrupt-driven status reporting via I²C. Use Value: Eliminates mechanical switch wear, enables sealed enclosure design, and maintains reliability across condensation cycles without recalibration. | Use Scenario: Operator panel on factory equipment requiring two safety-critical control buttons (e.g., emergency stop and mode select) in dusty, vibration-prone settings. IC Role / Device Role / Timing Role: Robust capacitive interface controller delivering deterministic 120-ms refresh with FSS and system diagnostics for functional safety awareness. Use Value: Prevents misoperation from debris or accidental contact while providing diagnostic feedback for maintenance verification. |
| Proximity-Activated Appliance Panel | Medical Device Touch Interface |
Use Scenario: Kitchen appliance with proximity wake-up (SENSE0) and touch confirmation (SENSE1), enabling hands-free activation before direct interaction. IC Role / Device Role / Timing Role: Dual-mode capacitive controller managing proximity detection and touch decision logic with configurable thresholds and auto-adaptive baseline tracking. Use Value: Reduces contamination risk and improves hygiene compliance by minimizing surface contact while maintaining low-latency response. | Use Scenario: Portable diagnostic device with two tactile feedback zones (e.g., start/stop and scroll) requiring ESD-hardened, liquid-tolerant interface under clinical cleaning protocols. IC Role / Device Role / Timing Role: Medical-grade capacitive controller delivering certified noise immunity (>100:1 SNR), validated diagnostics, and stable operation across sterilization temperature cycles. Use Value: Ensures consistent usability after repeated alcohol wipe exposure and meets IEC 60601-1 EMC requirements without shielding overhead. |
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® IC; no SmartSense; fixed 12-bit resolution; no system diagnostics | Limited to basic button replacement; lacks proximity mode, liquid tolerance, and runtime calibration | Select when cost sensitivity outweighs environmental robustness and development time savings |
| TTP223B-BA6 | Single-button toggle IC with built-in oscillator; no I²C interface; no programmable sensitivity or diagnostics | Fixed-function solution only; no host-controlled configuration or multi-sensor coordination | Choose for ultra-low-cost, single-button applications where configurability and diagnostics are unnecessary |
Compared with AT42QT1011-MAHR and TTP223B-BA6, the CY8CMBR3102-SX1I provides full runtime auto-tuning, dual-channel flexibility, I²C configurability, and integrated diagnostics-making it suitable for designs requiring field reliability, rapid prototyping, and multi-condition deployment without firmware development.
Availability
CY8CMBR3102-SX1I is available at Aetrix Electronics and suitable for smart home remotes, industrial HMI panels, proximity-activated appliances, and medical device interfaces requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for CY8CMBR3102-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 systems, sensors, and microcontrollers for industrial, automotive, and IoT applications.
The CY8CMBR3xxx family was originally developed by Cypress Semiconductor and continues under Infineon's portfolio to deliver register-configurable, firmware-free capacitive touch solutions targeting rapid HMI development in cost-sensitive, high-reliability consumer and industrial systems.
FAQ
What is the maximum overlay thickness supported by CY8CMBR3102-SX1I?
The CY8CMBR3102-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 verified in the datasheet (001-85330 Rev. *Q, Page 6) and confirmed by evaluation using standard electrode geometries and typical dielectric constants.
Does CY8CMBR3102-SX1I require external firmware development?
No. The CY8CMBR3102-SX1I is register-configurable via I²C and requires no firmware development. All functionality-including sensitivity, threshold, debounce, and LED drive-is configured using the EZ-Click Customizer tool or direct register writes, as documented in the TRM and design guides.
How does SmartSense Auto-tuning operate without host intervention?
SmartSense Auto-tuning runs autonomously in hardware, continuously adjusting baseline tracking, noise threshold, and sensitivity gain based on real-time sensor data. It requires no host CPU cycles or periodic polling-only initial I²C configuration-and maintains optimal performance across temperature, humidity, and aging effects.
Can CY8CMBR3102-SX1I detect proximity without physical touch?
Yes. The device supports true proximity sensing using the same SENSE0/SENSE1 inputs with configurable detection range and hysteresis. Proximity mode is enabled via register setting and leverages the same CSD PLUS engine and SmartSense calibration-no additional hardware or firmware is needed.
CY8CMBR3102-SX1I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- CAPSENSE™ Express™ SmartSense™
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Buttons
- Proximity Detection:
- Yes
- Number of Inputs:
- Up to 2
- LED Driver Channels:
- Up to 1
- Interface:
- I2C
- 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
CY8CMBR3102-SX1I FAQ
1.How can I place an order for CY8CMBR3102-SX1I through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8CMBR3102-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 CY8CMBR3102-SX1I reliable?
The price and inventory of CY8CMBR3102-SX1I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8CMBR3102-SX1I is usually 5 days.
3.What payment methods are accepted for CY8CMBR3102-SX1I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8CMBR3102-SX1I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8CMBR3102-SX1I?
CY8CMBR3102-SX1I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8CMBR3102-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 CY8CMBR3102-SX1I?
For technical support, including CY8CMBR3102-SX1I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8CMBR3102-SX1I requirements.
6.How does Aetrix verify that CY8CMBR3102-SX1I is sourced from the original manufacturer or authorized distributors?
All CY8CMBR3102-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 CY8CMBR3102-SX1I meets industry standards.
7.What is the process for return or replacement of CY8CMBR3102-SX1I?
All CY8CMBR3102-SX1I units undergo pre-shipment inspection (PSI). If there is an issue with CY8CMBR3102-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 CY8CMBR3102-SX1I part is unused and in its original packaging.
Return procedure for CY8CMBR3102-SX1I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8CMBR3102-SX1I Tags
-
IQS228B00000000TSR
Azoteq (Pty) Ltd
-
MTCH101T-I/OT
Microchip Technology
-
IQS323001CSR
Azoteq (Pty) Ltd
-
AT42QT1010-TSHR
Microchip Technology
-
AT42QT1012-TSHR
Microchip Technology
-
AT42QT1011-TSHR
Microchip Technology
-
CAP1206-1-SL-TR
Microchip Technology
-
MTCH102T-I/MS
Microchip Technology
-
IQS323001DNR
Azoteq (Pty) Ltd
-
AT42QT1070-SSUR
Microchip Technology
-
CAP1188-1-CP-TR
Microchip Technology
-
AT42QT1110-AUR
Microchip Technology
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
