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Cypress Semiconductor Electronic Components Datasheet

CY8CMBR2110 Datasheet

10 Button Controller

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CY8CMBR2110 pdf
CY8CMBR2110
CapSense® Express™ 10-Button Controller
Features
Register-configurable CapSense® controller
Does not require firmware or device programming
Ten-button solution configurable through I2C protocol
Ten general purpose outputs (GPOs)
GPOs are linked to CapSense buttons
GPOs support direct LED drive
SmartSense™ Auto-Tuning
Maintains optimal button performance even in noisy
environment
CapSense parameters dynamically set in runtime
Saves time and effort in device tuning
Wide parasitic capacitance (CP) range (5 pF–40 pF)
Advanced features
Robust sensing even with closely-spaced buttons – Flanking
Sensor Suppression (FSS)
User-configurable LED effects
• On-system power-on
• On-button touch
• LED ON Time after button release
• Standby Mode LED Brightness
Buzzer Signal Output
Supports analog voltage output (requires external resistors)
Attention line interrupt to host to indicate any CapSense but-
ton status change
CapSense performance data through I2C interface
Simplifies production-line testing and system debug
Noise Immunity
Specifically designed for superior noise immunity to external
radiated and conducted noise
Low radiated noise emission
System diagnostics of CapSense buttons – reports faults at
device power-up
Button shorts
Improper value of modulating capacitor (CMOD)
Parasitic capacitance (CP) value out of range
EZ-Click™ Customizer tool
Simple graphical configuration options
Dynamically configures all features
Configurations can be saved and reused later
I2C interface
No clock stretching
Supports speed of up to 100 kHz
Wide operating voltage range
1.71 V to 5.5 V – ideal for both regulated and unregulated
battery applications
Low power consumption
Supply current in run mode as low as 23 µA[1] for each button
Deep sleep current: 100 nA
Industrial temperature range: –40 °C to +85 °C
32-pin Quad Flat No-leads (QFN) package
(5 mm × 5 mm × 0.6 mm)
Overview
The CY8CMBR2110 CapSense Express™ capacitive touch
sensing controller saves time and money, quickly enabling a
capacitive touch sensing user interface in your design. It is a
register-configurable device and does not require any firmware
coding or device programming. In addition, this device is enabled
with Cypress’s SmartSense Auto-Tuning algorithm which elimi-
nates the need to manually tune the user interface during devel-
opment and production ramp. This speeds the time to volume
and saves valuable engineering time, test time, and production
yield loss.
The EZ-Click Customizer tool is a simple graphical interface for
configuring the device features, through the I2C interface. One
configuration can be used to configure multiple samples in
different boards.
The CY8CMBR2110 CapSense controller supports up to ten
capacitive sensing buttons and ten GPOs. The GPO is an active
low output controlled directly by the CapSense input making it
ideal for a wide variety of consumer, industrial, and medical appli-
cations. The wide operating range of 1.71 V to 5.5 V enables
unregulated battery operation, further saving component cost.
The same device can also be used in different applications with
varying power supplies.
This device supports ultra low-power consumption in both run
mode and deep sleep modes to stretch battery life. In addition,
this device also supports many advanced features, which
enhance the robustness and user experience of the end solution.
The key advanced features are Noise Immunity and Flanking
Sensor Suppression (FSS). Noise Immunity improves the
immunity of the device against radiated and conducted noise,
such as audio and radio frequency (RF) noise. FSS provides
robust sensing even with closely-spaced buttons. FSS is a
critical requirement in small form-factor applications.
Power-on LED effects provide visual feedback to the design at
system power-on. Button-controlled LED effects provide visual
feedback on a button touch. These effects improve the aesthetic
value of the end product. Buzzer Signal Output provides audio
feedback on a button touch. System diagnostics test for design
faults at power-on and report any failures. This simplifies
production-line testing and reduces manufacturing costs.
CapSense data output through I2C gives critical information
about the design, such as button CP and signal-to-noise ratio
(SNR). This further helps in system debug and production-line
testing.
Note
1.
23 µA per button (4 buttons used, 180 button touch
of all buttons < 20 pF, Button Scan Rate = 541 ms,
per hour, average button
with power consumption
touch time
optimized,
of 1000 ms, buzzer disabled, Button Touch LED Effects
Noise Immunity level Normal, CSx sensitivity Medium).
disabled,
10
pF
<
CP
Cypress Semiconductor Corporation • 198 Champion Court
Document Number: 001-74494 Rev. *A
• San Jose, CA 95134-1709 • 408-943-2600
Revised September 4, 2012
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Cypress Semiconductor Electronic Components Datasheet

CY8CMBR2110 Datasheet

10 Button Controller

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CY8CMBR2110 pdf
CY8CMBR2110
Contents
Pinout ................................................................................ 3
Typical Circuits ................................................................. 4
Schematic 1: Ten Buttons with Ten GPOs .................. 4
Schematic 2: Eight Buttons with Analog
Voltage Output .................................................................... 5
Configuring the CY8CMBR2110 ...................................... 6
EZ-Click Customizer Tool ............................................ 6
Device Features ................................................................ 6
CapSense Buttons ...................................................... 6
SmartSense Auto-Tuning ............................................ 6
General Purpose Outputs (GPOs) .............................. 6
Toggle ON/OFF ........................................................... 7
Flanking Sensor Suppression (FSS) ........................... 7
Noise Immunity ............................................................ 7
Automatic Threshold ................................................... 7
LED ON Time .............................................................. 8
Button Auto Reset ....................................................... 9
Power-on LED Effects ................................................. 9
Button Touch LED Effects ......................................... 11
Last Button LED Effect .............................................. 12
Standby Mode LED Brightness ................................. 13
Latch Status Read ..................................................... 13
Attention/Sleep Line to Host ...................................... 13
Analog Voltage Support ............................................ 14
Sensitivity Control ...................................................... 15
Debounce Control ..................................................... 15
Buzzer Signal Output ................................................ 15
Host Controlled GPOs ............................................... 16
System Diagnostics ................................................... 16
I2C Communication ................................................... 17
Power Consumption and Operating Modes ................. 20
Low-Power Sleep Mode ............................................ 20
Deep Sleep Mode ...................................................... 20
Response Time ............................................................... 21
Device Modes .................................................................. 22
Operating Mode ......................................................... 22
LED Configuration Mode ........................................... 22
Device Configuration Mode ....................................... 22
Production Line Test Mode ....................................... 22
Debug Data Mode ..................................................... 22
Steps to Configure CY8CMBR2110 ............................... 23
CY8CMBR2110 Reset .............................................. 23
Layout Guidelines and Best Practices ......................... 24
CapSense Button Shapes ......................................... 25
Button Layout Design ................................................ 25
Recommended via-hole Placement .......................... 25
Example PCB Layout Design with Ten CapSense
Buttons and Ten LEDs ..................................................... 26
Electrical Specifications ................................................ 27
Absolute Maximum Ratings ....................................... 27
Operating Temperature ............................................. 27
DC Electrical Characteristics ..................................... 28
AC Electrical Specifications ....................................... 31
Flash Write Time Specifications ................................ 31
CapSense Specifications .......................................... 32
I2C Specifications ...................................................... 32
Ordering Information ...................................................... 33
Ordering Code Definitions ......................................... 33
Package Information ...................................................... 33
Thermal Impedance .................................................. 33
Solder Reflow Specifications ..................................... 33
Package Diagram ...................................................... 34
Appendix - Register Map ............................................... 35
Reference Information ................................................... 67
Acronyms .................................................................. 67
Document Conventions 67
Document History Page ................................................. 68
Sales, Solutions, and Legal Information ...................... 68
Worldwide Sales and Design Support ....................... 68
Products .................................................................... 68
PSoC Solutions ......................................................... 68
Document Number: 001-74494 Rev. *A
Page 2 of 68


Part Number CY8CMBR2110
Description 10 Button Controller
Maker Cypress Semiconductor
Total Page 30 Pages
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