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CY8CMBR3108-LQXIT Capacitive Touch Buttons 16-QFN (3x3) 1.8V ~ 5.5V
Specifications of CY8CMBR3108-LQXIT
| TYPE | DESCRIPTION |
| Category | Integrated Circuits (ICs) |
| Interface | |
| Sensor, Capacitive Touch | |
| Mfr | Infineon Technologies |
| Series | CapSense® Express™ SmartSense™ |
| Package | Tape & Reel (TR) |
| Cut Tape (CT) | |
| Digi-Key Programmable | Not Verified |
| Type | Buttons |
| Proximity Detection | Yes |
| Number of Inputs | Up to 8 |
| LED Driver Channels | Up to 4 |
| Interface | I²C |
| Resolution | - |
| Voltage - Supply | 1.8V ~ 5.5V |
| Current - Supply | 140mA |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package / Case | 16-UFQFN Exposed Pad |
| Supplier Device Package | 16-QFN (3x3) |
| Base Product Number | CY8CMBR3108 |
Features of CY8CMBR3108-LQXIT
Administrator:
■ Register-configurable CapSense Express controller
❐ No firmware development required
❐ Patented CSD sensing algorithm
❐ High sensitivity (0.1 pF)
• Overlay thickness of up to 15 mm for glass and 5 mm for plastic
• Proximity solutions
• Sensitivity up to 2 fF per count
❐ Best-in-class >100:1 SNR performance
• Superior noise-immunity performance against conducted and radiated noise
• Ultra-low radiated emissions
❐ SmartSense Auto-tuning
• Sets and maintains optimal sensor performance during run time
• Eliminates manual tuning during development and production
■ Low-power CapSense
❐ Average current consumption of 22 µA per sensor at 120-ms refresh interval
❐ Wide parasitic capacitance (CP) range: 5–45 pF
■ Advanced user interface features
❐ Liquid tolerance
❐ User-configurable LED brightness for visual touch feedback
• Up to eight high-sink current GPOs to drive LEDs
❐ Buzzer signal output for audible touch feedback
❐ Flanking Sensor Suppression (FSS) to eliminate false touches in closely spaced buttons
❐ Analog voltage output
❐ Attention line interrupt to the host to indicate any change in sensor status
■ System diagnostics to detect
❐ Improper value of the modulating capacitor (CMOD)
❐ Out of range sensor parasitic capacitance (CP)
❐ Sensor shorts
■ EZ-Click™ Customizer tool
❐ Simple GUI for device configuration
❐ Data viewing and monitoring for CapSense buttons, sliders,and proximity sensors
❐ System diagnostics for rapid debug
■ I2C slave
❐ Supports up to 400 kHz
❐ Wake-on-hardware address match
❐ No bus-stalling or clock-stretching during transactions
■ Low-power 1.71-V to 5.5-V operation
❐ Deep Sleep mode with wake-up on interrupt and I2C address detect
■ Industrial temperature range: –40 °C to +85 °C
■ Package options
❐ 8-pin SOIC (150 mil)
❐ 16-pin SOIC (150 mil)
❐ 16-pin QFN (3 × 3 × 0.6 mm)
❐ 24-pin QFN (4 × 4 × 0.6 mm)
Applications of CY8CMBR3108-LQXIT
The CY8CMBR3xxx CapSense® Express™ controllers enable advanced, yet easy-to-implement, capacitive touch sensing user
interface solutions. This register-configurable family, which supports up to 16 capacitive sensing inputs, eliminates time-consuming
firmware development. These controllers are ideal for implementing capacitive buttons, sliders, and proximity sensing solutions with
minimal development-cycle times.
