CY8CMBR3002/CY8CMBR3102/
CY8CMBR3106S/CY8CMBR3108/
CY8CMBR3110/CY8CMBR3116 Datasheet
CapSense Express Controllers with SmartSense
Auto-tuning - 16 Buttons, 2 Sliders, Proximity Sensors
CapSense Express Controllers with SmartSense Auto-tuning - 16 Buttons, 2 Sliders, Proximity Sensors
General Description
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.
The CY8CMBR3xxx family features an advanced analog sensing channel and the Capacitive Sigma Delta PLUS (CSD PLUS) sensing
algorithm, which delivers a signal-to-noise ratio (SNR) of greater than 100:1 to ensure touch accuracy even in extremely noisy
environments. These controllers are enabled with Cypress’s SmartSense™ Auto-tuning algorithm, which compensates for
manufacturing variations and dynamically monitors and maintains optimal sensor performance in all environmental conditions. In
addition, SmartSense Auto-tuning enables a faster time-to-market by eliminating the time-consuming manual tuning efforts during
development and production ramp-up.
Advanced features, such as LED brightness control, proximity sensing, and system diagnostics, save development time. These
controllers enable robust liquid-tolerant designs by eliminating false touches due to mist, water droplets, or streaming water. The
CY8CMBR3xxx controllers are offered in a variety of small form factor industry-standard packages.
The ecosystem for the CY8CMBR3xxx family includes development tools—software and hardware—to enable rapid user interface
designs. For example, the EZ-Click Customizer tool is a simple graphical user interface software for configuring the device features
through the I2C interface. This tool also supports CapSense data viewing to monitor system performance and support validation and
debugging. Another tool, the Design Toolbox, simplifies circuit board layout by providing design guidelines and layout
recommendations to optimize sensor size, trace lengths, and parasitic capacitance. To quickly evaluate the CY8CMBR3xxx family
features, use the CY3280-MBR3 Evaluation Kit.
❐ Flanking Sensor Suppression (FSS) to eliminate false touch-
es in closely spaced buttons
Features
❐ Analog voltage output
■ Register-configurable CapSense Express controller
❐ Attention line interrupt to the host to indicate any change in
❐ No firmware development required
❐ Patented CSD sensing algorithm
❐ High sensitivity (0.1 pF)
sensor status
■ System diagnostics to detect
• Overlay thickness of up to 15 mm for glass and 5 mm for
plastic
• Proximity solutions
❐ Improper value of the modulating capacitor (CMOD)
❐ Out of range sensor parasitic capacitance (CP)
❐ Sensor shorts
• Sensitivity up to 2 fF per count
■ EZ-Click™ Customizer tool
❐ Simple GUI for device configuration
❐ Data viewing and monitoring for CapSense buttons, sliders,
and proximity sensors
❐ Best-in-class >100:1 SNR performance
• Superior noise-immunity performance against conducted
and radiated noise
• Ultra-low radiated emissions
❐ System diagnostics for rapid debug
❐ SmartSense Auto-tuning
• Sets and maintains optimal sensor performance during
run time
• Eliminates manual tuning during development and produc-
tion
■ 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
■ Low-power CapSense
❐ Average current consumption of 22 µAper sensor at 120-ms
refresh interval
❐ Deep Sleep mode with wake-up on interrupt and I2C address
detect
■ Industrial temperature range: –40 °C to +85 °C
❐ Wide parasitic capacitance (CP) range: 5–45 pF
■ Advanced user interface features
■ Package options
❐ Liquid tolerance
❐ 8-pin SOIC (150 mil)
❐ 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
❐ 16-pin SOIC (150 mil)
❐ 16-pin QFN (3 × 3 × 0.6 mm)
❐ 24-pin QFN (4 × 4 × 0.6 mm)
Cypress Semiconductor Corporation
Document Number: 001-85330 Rev. *Q
•
198 Champion Court
•
San Jose, CA 95134-1709
•408-943-2600
Revised March 15, 2021
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