CY8CMBR3002, CY8CMBR3102
CY8CMBR3106S, CY8CMBR3108
CY8CMBR3110, CY8CMBR3116 Datasheet
CapSense
®
Express™ Controllers with SmartSense™
Auto-tuning - 16 Buttons, 2 Sliders, Proximity Sensors
Cypress Semiconductor Corporation • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600
Document Number: 001-85330 Rev. *N Revised March 16, 2017
CapSense
®
Express™ Controllers with SmartSense™ Auto-tuning 16 B uttons, 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 I
2
C 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.
Features
■ 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 produc-
tion
■ Low-power CapSense
❐ Average current consumption of 22 µA per sensor at 120-ms
refresh interval
❐ Wide parasitic capacitance (C
P
) 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 touch-
es 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 (C
P
)
❐ 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
■ I
2
C 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 I
2
C 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)
CY8CMBR3002, CY8CMBR3102
CY8CMBR3106S, CY8CMBR3108
CY8CMBR31 10, CY8CMBR31 16 Dat asheet
Document Number: 001-85330 Rev. *N Page 2 of 42
More Information
Cypress provides a wealth of data at www.cypress.com to help
you to select the right CapSense device for your design, and to
help you to quickly and effectively integrate the device into your
design. For a comprehensive list of resources, see the
knowledge base article KBA92181, Resources Available for
CapSense® Controllers. Following is an abbreviated list for
CapSense devices:
■ Overview: CapSense Portfolio, CapSense Roadmap
■ Product Selectors: Refer to the "CapSense Selector Guide"
chapter in the Getting Started with CapSense design guide.
CY8CMB R3x x x Eco s ys te m
Cypress provides a complete ecosystem to enable a quick devel-
opment cycle with the CY8CMBR3xxx CapSense controller
family. This ecosystem includes simple tools for device configu-
ration, design validation, and diagnostics.
Documentation
Design Guides
Design guides are an excellent introduction to a variety of
possible CapSense-based designs. They provide an intro-
duction to the solution and complete system design guidelines.
Refer to the following design guides for CY8CMBR3xxx:
1. Getting Started with CapSense – an ideal starting point for all
CapSense users
2. CY8CMBR3xxx CapSense Design Guide – provides
complete system design guidelines for CY8CMBR3xxx
You can download these design guides from our website:
www.cypress.com/go/capsense.
Registers TRM
The CY8CMBR3xxx Registers TRM lists and details all the
registers of the CY8CMBR3xxx family of controllers in order of
their addresses. These registers may be accessed through an
I
2
C interface with the host.
Software Utility
EZ-Click Customizer Tool
The EZ-Click Customizer Tool is a simple, GUI-based software
utility that can be used to customize the CY8CMBR3xxx device
configurations.
Use this GUI-based tool to do the following:
1. Select the appropriate part number based on an end-applica-
tion requirement using the Product Selector
2. Configure the device features
3. Observe CapSense data for button and proximity sensors
4. Use the System Diagnostics and built-in test self-test (BIST)
features for debug and production-line testing
Figure 1. Configuri ng CY8CMBR3x x x us in g Ez-Clic k
1
2
3
2
4