001-91345 owner: jhnw introduction to capsense by cypress - product family presentation rev ** the...
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001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
The Industry’s No. 1 Capacitive Sensing Technology
Introduction toCapSense® by Cypress
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
You can use capacitive sensing technology to create innovative and reliable productsSleek, stylish and highly reliable capacitive sensing buttons can replace all of the 10 billion mechanical buttons sold every year
Capacitive sensing technology can implement reliable, proximity-based applications such as wake-on-approach, face detection and spatial measurement
Capacitive sensing technology can replace mechanical sensors for applications such as liquid-level sensing and frost detection
Capacitive Sensing-Based Liquid-Level Sensorby Cambridge Consultants
Capacitive Sensing Technology Enables Innovation
Capacitive User Interface in a Digital Boom Boxby Logitech
Deliver innovative products with Cypress’s industry-leading capacitive sensing technology
3a
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
CapSense: The Industry’s Leading Capacitive Sensing TechnologyCapSense is Cypress’s capacitive-sensing technologyCapSense is the industry’s No. 1 solution in sales by 4x over No.2
Over one billion CapSense controllers have replaced more than five billion mechanical buttons
CapSense is found everywhere, including smartphones, home appliances and printers
“We selected CapSense for its flexibility, as well as for its durability and performance, given the harsh operating environment that washing machines face. Having previously designed CapSense into our oven products, we are well aware of the stylish interfaces it enables for home appliances.”
- Davide Aloj, Electronic Development Manager, Indesit
3b
Touch Buttons: 2003 Liquid Tolerance: 2008 Configurability: 2011Noise Immunity: 2010
Cypress’s CapSense research and development begins with buttons and sliders
CapSense algorithms offer Liquid Tolerance, proximity sensing and improved noise immunity
SmartSense™ Auto-tuning revolutionizes CapSense design
by removing Manual Tuning and improving noise immunity
CapSense Express™ offers configurable solutions that do not require Firmware Development
One billionth CapSense controller shipped with stylus-activated buttons
1B Units Shipped: 2013
LG Chocolate Mobile Phone Whirlpool Dishwasher Microsoft Arc Touch MouseHP TouchSmart Printer Samsung Galaxy Note 3
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
CapSense Technology TermsCapacitanceThe property of a conductive body, such as a copper trace on a PCB, to store an electric charge
Can increase or decrease because of manufacturing tolerances and environmental changes
Capacitive Sensing SystemA system capable of measuring and responding to a change in Capacitance
Capacitive SensorA conductor and substrate, such as a copper button on a printed circuit board (PCB), which reacts to a touch or an approaching
object with a change in capacitance
Sensor LayoutThe placement of Capacitive Sensors, for example, on a Printed Circuit Board (PCB)
Raw Count A digital signal generated by a Capacitive Sensing System
The capacitance of a Capacitive Sensor is digitized into a Raw Count
Sensing ParametersParameters that define the response and performance of a Capacitive Sensing System, including
Sensitivity: The minimum Capacitance change measured by the Capacitive Sensing System (for example, 100 fF)
Baseline: The reference value against which changes in Capacitance are measured (for example, a Raw Count of 3,000)
Touch Threshold: The minimum Capacitance change needed to trigger a response from a Capacitive Sensing System (for example, a Raw Count change of 5,000)
4a
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
CapSense Technology TermsFirmware Development The process of developing algorithms in a programming language, such as the C language, to control the response
of a Capacitive Sensing System with an embedded microcontroller
Manual TuningThe manual process of setting Sensing Parameters for optimal performance during the design phase
Required on an ongoing basis to compensate for system, manufacturing and environmental changes during the prototyping and manufacturing phases
SmartSense Auto-tuningA CapSense algorithm that automatically sets Sensing Parameters for optimal performance after the design phase
Continuously compensates for system, manufacturing and environmental changes
Parasitic Capacitance (CP)
The intrinsic Capacitance of the PCB traces, or other connections, to a Capacitive Sensor
Reduces the sensitivity of a Capacitive Sensor by attenuating the sensor signal
Signal-to-Noise Ratio (SNR)The ratio of the sensor signal, when touched, to the noise signal of an untouched sensor
Capacitive Sensing Systems require an SNR of 5:1 per IEC standard 61000-4-3/6-1
Electromagnetic Interference (EMI)May degrade the performance of a Capacitive Sensing System
Systems must meet IEC 61000-4-3/6-1 standards for immunity to external noise (“Radiated Immunity”)
May be emitted by the Capacitive Sensing System
Systems must meet IEC 61000-6-3 noise standards (“Radiated Emission”)
4b
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
CapSense Technology TermsLiquid ToleranceThe ability of a Capacitive Sensing System to work properly in the presence of liquid droplets, streaming liquids or mist
Proximity SensorA sensor that can detect the presence of nearby objects without any physical contact
Glove TouchThe ability of a Capacitive Sensing System to detect touches by a user wearing gloves, which degrade performance
Stylus TouchThe ability of a Capacitive Sensing System to detect touches by a pointed, handheld instrument
4c
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
Design Problems Engineers Face1. Mechanical buttons are old-fashioned and unreliableConsumers demand reliable products with sleek aesthetics
Mechanical buttons and knobs are bulky and unattractive, and wear out over time
Legacy Keypad With Mechanical Buttons
Mechanical buttons get dirty and sticky
Calculator With Membrane Switches
Membrane switches wear out
5a
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
Design Problems Engineers Face2. Reliable Capacitive Sensing Systems are difficult to implementCapacitive Sensing Systems require specialized expertise to implement
Curved or thick overlays, gloves and stylus sensing reduce SNR performance
End applications require time-consuming Manual Tuning for robust performance
EMI noise sources can cause failures
Glove Touch for Medical Equipment
Doctors and technicians generally wear gloves while operating medical equipment. Glove Touch requires a high SNR.
Curved Overlays on a Wearable Device
Products with rounded and seamless edges are becoming increasingly popular with consumers. The curved overlays on these products require a high SNR.
5b
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
Design Problems Engineers Face3. Advanced features such as proximity sensing and Liquid Tolerance can further complicate the
system designNoise can make it more difficult to implement reliable proximity sensing solutions
Water, mist and other liquids trigger false touches in Capacitive Sensing Systems
Advanced features require additional ICs and passives, which increase the design complexity and BOM
Capacitive Sensing System in a Washing Machine
Capacitive Sensing Systems are prone to failure in the presence of water
Proximity Sensor on a Computer Mouse
A Proximity Sensor can be used to turn a mouse on when a user’s hand approaches,but it is susceptible to EMI
5c
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
Design Problems Engineers Face4. Mechanical and analog sensors are expensive and can be unreliableThe failure rate of mechanical devices is much higher than that of electronic devices
Analog sensors can fail in challenging environments, such as at high temperatures or near liquids
Mechanical Liquid-Level Sensor Infrared (IR) Proximity Sensor
Mechanical liquid-level sensors are expensive and have multiple parts, including floats, that can fail or wear out
Analog IR sensors often fail at high temperatures or in strong ambient light
5d
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
CapSense Solves These ProblemsReplaces mechanical buttons with sleek and reliable CapSense buttons at low cost
Provides SmartSense Auto-tuning and superior SNR (>100:1), which make reliable Capacitive Sensing Systems easy to implement
Provides advanced features like proximity sensing and Liquid Tolerance simply and quickly
Replaces mechanical and analog sensors with reliable, cost-effective Capacitive Sensors
CapSense enables a reliable, easy-to-implement Capacitive Sensing System with advanced features
CapSense enables an attractive and reliable cooktop with a flat, easy-to-clean, liquid-tolerant surface
Legacy Cooktop Controls
Mechanical knobs in legacy cooktops are bulky and unattractive
Induction Cooktop by Cooktek
5e
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
How CapSense registers a touchA Capacitive Sensor is used to measure the change in Capacitance between a pin and the ground
CapSense algorithms and analog circuitry convert the measured Capacitance to a Raw Count
A finger touch increases the Capacitance of the system, which in turn increases the Raw Count
An increase in the Raw Count above a user-defined Touch Threshold registers a touch
Refer to the Getting Started With CapSense Guide for details on CapSense algorithms
CapSense Replaces Mechanical Buttons
CX = 2CP
PCB
Overlay
CP CP
Copper Ground
Copper Ground
CapacitiveSensor
CX = 2CP + CF
PCB
Overlay
CP CP
Copper Ground
Copper Ground
CF
CapacitiveSensor
Capacitive SensorWithout a Finger Touch
Capacitive SensorWith a Finger Touch
CF = Capacitance added by a finger touch
CF is dependent on the overlay material, overlay thickness and the dimensions of the finger (typical = 9mm) and sensor
CX = Total Capacitance measured by the Capacitive Sensing System
CP = Parasitic Capacitance
Raw Count Variation on Finger Touch
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3480
3500
3520
3540
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3580
3600
3620
3640
3660
0 200 400 600 800 1000 1200 1400 1600
Sig
nal
Noise
No Touch Touch
Baseline
Raw
Cou
nt
Time (ms)
Touch Threshold
CapSense algorithms use analog circuits to convert the Capacitance to Raw Count, which is compared to the chosen Touch Threshold to record a touch
800400 1,2000 1,600
1,55
01,
500
1,60
01,
650
1,70
0
No Touch
6a
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
SmartSense Auto-tuning Saves TimeSmartSense Auto-tuning sets, monitors and continuously maintains optimal Capacitive Sensor performanceReduces design effort by eliminating Manual Tuning after the design phase
Adapts to manufacturing variations in PCB, overlay and paint that degrade touch-sensing performance
Adapts to changes in system environment due to RF noise sources
Allows a platform design approach that uses different overlays, button shapes and Trace Lengths with the same electronics
Steps eliminated through Auto-tuning functionality
SmartSense Auto-tuning eliminates time-consuming Manual Tuning and the design iterations caused by it
SmartSense Auto-tuning Cuts Design Cycle Time
6b
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
High SNR: CapSense exceeds the requirements for robust performanceEnables system designs with an SNR >100:1, greater than the IEC requirement of 5:1
Enables designs with thick or curved overlays
Enables advanced features such as Glove Touch and Stylus Touch support
Noise immunity: CapSense meets all of the IEC standards
CapSense buttons “just work” because of rigorous engineering and testing
Why CapSense “Just Works”
IEC Standard Description IEC Standard Requirement CapSense
61000-4-3/6-1 Radiated immunity(80 MHz to 2.4 GHz)
SNR > 5:1, No false trigger, > 10V/m
10:1 SNR, No false triggers
61000-6-3 Radiated emission 30.0 dBµV/m, 30-230 MHz37.5 dBµV/m, 230-1,000 MHz
< 25 dBµV/m< 37 dBµV/m
Test ParameterParasitic Capacitance Overlay
Glove Thickness
CapSense SNR(IEC Spec = 5:1)
Reference 10 pF 1.0 mm None 150:1
Thick Overlay 10 pF 2.0 mm None 73:1
Glove Touch 10 pF 1.0 mm 4 mm 37:1
Thick Overlay and Glove Touch
10 pF 2.0 mm 4 mm 25:1
Radiated Immunity Test Room
Radiating Antenna
CapSense Test Board
Radiated Emission Test Data
40
30
20
10
030 100 1,000
Frequency (MHz)
Ele
ctri
c F
ield
Str
en
gth
(d
Bµ
V/m
)
50
60
70
IEC 61000-6-3 limit
Actual CapSense data
Cypress setup to test the EMI tolerance of CapSense buttons
6c
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
How Proximity Sensing WorksCapSense Sensing Parameters can be set to sense a finger without an actual touchA finger near a highly sensitive Capacitive Sensor increases the Capacitance of a Capacitive Sensing System
Proximity Sensor performance can be improved by optimizing the board layout and Firmware Development
Multiple Proximity Sensors can be implemented on the same board to improve the overall performance
Refer to the Getting Started With CapSense Guide for details on proximity sensing
CX = 2CP
PCB
Overlay
CP CP
Copper Ground
Copper Ground
CapacitiveSensor
CX = 2CP + CFP
PCB
Overlay
CP CP
Copper Ground
Copper Ground
CFP
CapacitiveSensor
Proximity Sensor Without a Finger Nearby
Proximity Sensor With a Finger Nearby
CFP = Capacitance added to the system by a nearby finger
CFP is dependent on the overlay material, overlay thickness, sensor size and the distance of the finger from the sensor
CX = Total Capacitance measured by the Capacitive Sensing System
CP = Parasitic Capacitance
Raw Count Variation With a Finger Nearby
The increase in Raw Count of a Proximity Sensor when a finger approaches is similar to the increase when a finger touchesa Capacitive Sensor
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0 200 400 600 800 1000 1200 1400 1600
Sig
nal
Raw
Cou
nt
Time (ms)
Touch Threshold
800400 1,2000 1,600
40,2
0040
,000
40,4
0040
,600
No Touch Touch No Touch
Noise
Baseline
6d
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
CapSense Proximity SensorsCapSense enables capacitive Proximity Sensors with:A proximity sensing distance of up to 30 cm
Superior SNR and SmartSense Auto-tuning to ensure reliable performance
CapSense Proximity Sensors enable: Aesthetic design with proximity-based LED lighting effects
Enhanced reliability by eliminating mechanical contact
Lower power consumption than other Proximity Sensors, such as IR sensors
Advanced features such as wake-on-approach, face detection and spatial measurement
Spatial measurement uses multiple Proximity Sensors to measure position and distance.
Proximity Sensors
Spatial Measurement Using Multiple Proximity Sensors
Face Detection in Nokia Asha 502
The face-detection feature prevents false touches on the phone’s touchscreen.
Wake-on-Approach in Light Control Panels
The wake-on-approach feature turns on the Capacitive Sensing System from the standby mode.
6e
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
CapSense maintains touch accuracy in wet conditions by using:A shield electrode to eliminate false touches from water droplets, mist and other liquids
A guard sensor to eliminate false touches from streaming liquids or submersion
Watch our Liquid Tolerance demo video to learn more
CapSense Works Under Liquids
Raw Count With a Shield ElectrodeRaw Count Without a Shield Electrode
The Raw Count generated by a water droplet exceeds the Touch Threshold, causing a false touch
The Raw Count generated by a water droplet is below the Touch Threshold; therefore, there is no false touch
CapSense buttons even work under spaghetti sauce
CapSense Works Under Liquids
Finger Touch
Touch Threshold
Water Droplet
Water Droplet
Finger Touch
Noise FloorNoise Floor
Touch Threshold
Liquid-Tolerant CapSense Sensor Layout
Shield electrodes are copper fills around sensors that offset liquid droplets; guard sensors are copper traces that offset streaming liquids
Sensor SensorShield Electrode
Guard Sensor
6f
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
CapSense Liquid SensingCapacitive Sensors can detect liquid-level height and other liquid characteristicsLiquids in contact with a Capacitive Sensor increase the Capacitance of the Capacitive Sensing System
The increase in Capacitance is dependent on the liquid’s characteristics, such as its concentration
Capacitive Sensors can sense different types of liquids, such as water, milk and automobile coolants
Typical applications include liquid-level sensing, and detection of concentration changes and frost
Refer to the Getting Started with CapSense Guide for details on CapSense-based liquid sensing
CX = 2CP
PCB
Overlay
CP CP
Copper Ground
Copper Ground
CapacitiveSensor
CX = 2CP + CL
PCB
Overlay
CP CP
Copper Ground
CopperGround
CL
CapacitiveSensor
Capacitive Sensor Without Any Liquid in Contact
Capacitive Sensor With a Liquid in Contact
CL = Capacitance added to the system by the liquid
CL is dependent on the overlay material, overlay thickness and the characteristics of the liquid
CX = Total Capacitance measured by the Capacitive Sensing System
CP = Parasitic Capacitance
Raw Count Variation on Liquid Contact
The increase in Raw Count when a Capacitive Sensor is in contact with a liquid is similar to the increase when a finger touches a Capacitive Sensor
Liquid
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3500
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3580
3600
3620
3640
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0 200 400 600 800 1000 1200 1400 1600
Sig
nal
Raw
Cou
nt
Time (ms)
Touch Threshold
800400 1,2000 1,600
1,55
01,
500
1,60
01,
650
1,70
0 No Touch Touch No Touch
Noise
Baseline
6g
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
CapSense Portfolio
Production Development/Concept
CapSense Express™ CapSense Plus™ PSoC®
Configurable1 Programmable2 Programmable System-on-Chip2
CY8CMBR30022 Buttons, 2 LEDs
SmartSense_EMCplus33
CY8CMBR311616 Buttons, 8 LEDs
Proximity, Liquid Tolerance SmartSense_EMCplus33
CY8CMBR31088 Buttons, 4 LEDs
Proximity, Liquid Tolerance SmartSense_EMCplus33
CY8CMBR3106S11 Buttons, 2 Sliders
Proximity, Liquid ToleranceSmartSense_EMCplus™33
CY8CMBR311010 Buttons, 5 LEDs
Proximity, Liquid Tolerance SmartSense_EMCplus33
CY8CMBR31022 Buttons, Proximity
SmartSense_EMCplus33
CY8C201xx10 Buttons, 5 LEDs
2 Sliders
CY8CMBR201010 Buttons, 10 LEDs
SmartSense Auto-tuning
CY8CMBR201616 Buttons
SmartSense Auto-tuning
CY8CMBR20444 Buttons, 4 LEDs
SmartSense™ Auto-tuning
CY8CMBR211010 Buttons, 10 LEDs
SmartSense Auto-tuning
CY8C20xx731 Buttons, 6 Sliders
16, 32KB Flash; 2KB SRAMProximity, Liquid Tolerance
Glove Touch, Stylus Support
CY8C20x36A33 Buttons, 6 Sliders
8KB Flash, 1KB SRAMSmartSense Auto-tuning
CY8C20x3425 Buttons, 6 Sliders
8KB Flash, 512Byte SRAM
CY8C20xx6A/S 33 Buttons, 6 Sliders
16, 32KB Flash; 2KB SRAMSmartSense Auto-tuning
CY8C20xx6H 25 Buttons, 5 Sliders
8,16KB Flash; 1, 2KB SRAMSmartSense Auto-tuning
Haptics
CY8C21x34/B24 Buttons, 4 Sliders
8KB Flash, 512Byte SRAMProximity, Liquid Tolerance
SmartSense Auto-tuning
CY8C40xx16 Buttons, 3 Sliders
8, 16KB FlashProximity, Liquid Tolerance
SmartSense_EMCplus3
CY8C41xx/42xx36 Buttons, 12 Sliders
16, 32KB FlashProximity, Liquid Tolerance
SmartSense_EMCplus3
CY8C36xx/38xx62 Buttons, 12 Sliders
32, 64KB FlashProximity, Liquid Tolerance
SmartSense_EMCplus33
CY8C28xx44 Buttons, 8 Sliders
16KB Flash Proximity, Liquid Tolerance
SmartSense Auto-tuning
CY8C32xx/34xx62 Buttons, 12 Sliders
16-64KB FlashProximity, Liquid Tolerance
SmartSense_EMCplus33
CY8C52xx/54xx62 Buttons, 12 Sliders
32-256KB FlashProximity, Liquid Tolerance
SmartSense_EMCplus3
CY8C4246/796 Buttons, 19 Sliders
CY8C56xx/58xx62 Buttons, 12 Sliders
64-256KB FlashProximity, Liquid Tolerance
SmartSense_EMCplus33
CY8CMBR310XL1-4 Buttons
Ultra-low power
Integration1 Standard products are configured with a graphical user interface (no Firmware Development) 2 Microcontroller-based products can be freely programmed to implement additional functions
3 SmartSense Electromagnetic Compatible = SmartSense Auto-tuning + high noise immunity
10a
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
CapSense Design ResourcesUse the CapSense design software and kits to easily implement your CapSense design
Download datasheets, design guides and application notes: www.cypress.com/capsense
Contact our dedicated team of technical experts to support your design: www.cypress.com/support
CapSense Solution Design Software CapSense Kits
CapSense Express EZ-Click MBR3 Evaluation Kit
CapSense, PSoC 1 PSoC Designer CapSense Starter Kit
PSoC 3, PSoC 4, PSoC 5LP PSoC Creator PSoC 4 Pioneer Kit
To create a reliable, one-chip CapSense solution.
A complex design in challenging environments…
Is simplified using EZ-Click, PSoC Designer, or PSoC Creator…
And prototyped on a CapSense Kit…
Refrigerator UIby Panasonic
CapSense Starter Kit With a MiniProg3 Programmer Kit
PSoC DesignerNoisy and Wet Conditions
10b
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
Design ProblemsQuickly add capacitive buttons to an unmodified designEnsure robust performance even in a noisy environmentEnsure robust operation in wet conditions like mist or rainImplement a wake-on-approach feature to wake the system
from sleep when a hand approaches
CapSense Express SolutionIs an easy-to-implement solution Provides superior noise immunity (SNR >100:1)Enables a liquid-tolerant designUses a Proximity Sensor for wake-on-approach
CapSense Express Solution Example –Security Keypad
Security Keypadby SamsungDesign Software: EZ-Click
Kit: MBR3 Evaluation Kit
Design Guides: Getting Started with CapSense CapSense MBR3 Design Guide
CapSense providesa sleek and robust design
CapSense Value Block Diagram
CapSense Design Resources
Cypress CapSense
16
CapSense One-Chip MBR Solution
I2C2
Capacitive ButtonKeypad with Proximity Sensors
Host
IntegratedSmartSenseAlgorithm
11a
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
Design ProblemsImplement capacitive sensing in a noisy environmentEnsure robust operation in wet conditionsReduce BOM costs
CapSense SolutionProvides superior noise immunity (SNR >100:1)Enables a liquid-tolerant designIntegrates additional functions like Proximity Sensors,
an LED display, and buzzers
One-chip = CapSense + Proximity + LED + Buzzer
CapSense Solution Example –Espresso Machine
Espresso Machineby Saeco Design Software: PSoC Designer
Kits: CapSense Starter Kit PSoC MiniProg3 Programmer Kit
Design Guides: Getting Started with CapSense CY8C20xx7/S Design Guide
CapSense enables a sleek interface that works robustly in
wet conditions
CapSense Value Block Diagram
CapSense Design Resources
GPIODoor Lock
I2C
PWM
PWM
M8CMCU
CapSense One-Chip SolutionLED
Host
Button
Proximity
Capacitive Sensors
15
2
IntegratedSmartSenseAlgorithm
Piezo Speaker
11b
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
Design ProblemsReplace expensive IR sensors for face detectionEnsure robust button performance, even in noisy conditionsWork properly in the presence of mist or rain
CapSense SolutionEnables face detection with Proximity SensorsProvides superior noise immunity (SNR >100:1)Enables a liquid-tolerant design
CapSense Solution Example –Smartphone
Design Software: PSoC Designer
Kits: CapSense Starter Kit PSoC MiniProg3 Programmer Kit
Design Guides: Getting Started with CapSense CY8C20xx7/S Design Guide
CapSense Value Block Diagram
CapSense Design Resources
M8C MCU
CapSense One-Chip Solution
I2C2
Capacitive Sensors
Host
3IntegratedSmartSenseAlgorithm
Android Buttons on a Smartphone by Oppo
CapSense enablesa smartphone to work in wet
conditions such as mist or rain
2Proximity Sensors for Face
Detection
11c
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
Design ProblemsImplement capacitive touch in a noisy environmentEnsure robust operation when touched by wet fingersImplement Class B certification1 for safe cooktop controlReduce overall BOM
PSoC SolutionProvides superior noise immunity (SNR >100:1)Enables a liquid-tolerant designProvides Class B firmware library to simplify UL certificationIntegrates additional functions, such as sensors, RTC,
and an LED display, on the same chip
One-chip = MCU + CapSense + Logic + Analog + Display
PSoC Solution Example –Induction Cooktop
Induction Cooktop by MideaDesign Software: PSoC Creator
Kit: PSoC 3 CY8CKIT-030 Kit
Design Guides: Getting Started with CapSense PSoC 3 CapSense Design Guide
App Note: IEC 60730 Class B Safety Software Library
CapSense enables a sleek interface with Class B certification
and low BOM costs
CapSense Value Block Diagram
CapSense Design Resources
PWM
Logic
PWM
Piezo Speaker
LED Display
UART
PSoC 3 One-Chip Solution
Induction Drive
Module
7
2
AMUX
ADC
Humidity Sensor
8051MCU
8
IntegratedSmartSenseAlgorithm
RTC
Capacitive Sensors
Thermometer
1 Class B certification is an IEC/UL 60730 safety standard for appliance operation. It is required by most home appliance manufacturers in the U.S. and Europe.
11d
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
Design ProblemsEliminate mechanical parts, like floats, that tend to wear outAccurately measure the level of milk in a containerEliminate all sensors inside the container
CapSense SolutionReplaces liquid-level sensors with Capacitive SensorsAccurately measures up to 0.2 cmEnables Capacitive Sensors to be mounted outside
the container
CapSense Solution Example –Liquid-Level Sensing in a Coffee Machine
Design Software: PSoC Designer
Kits: CapSense Starter Kit PSoC MiniProg3 Programmer Kit
Design Guides: Getting Started with CapSense CY8C20xx7/S Design Guide
CapSense Value Block Diagram
CapSense Design Resources
I2C
CapSense One-Chip Solution
Host
2
CapacitiveSensors
8
ContainerM8CMCU
IntegratedSmartSenseAlgorithm
Liquid-Level Sensingin a Coffee Machine
by Gaggia
CapSense enables accurate measurement of the level of
milk in a coffee machine
LiquidLevel
11e
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
Getting Started with CapSense1. Buy the $25 MBR3 Evaluation Kit (CY3280-MBR3):
www.cypress.com/MBR3Kit
2. Install the EZ-Click software on your PC:www.cypress.com/EZClick
3. Download our Getting Started with CapSense Design Guide:www.cypress.com/CapSenseDesignGuide
4. Attend a CapSense Workshop:
www.cypress.com/CapSenseWorkshop
Flyer Tablet by HTC Voyager Bluetooth Headset by PlantronicsGalaxy S5 by Samsung
CY3280-MBR3 Evaluation Kit
12
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
APPENDIX
15
001-91345 Owner: JHNW Introduction to CapSense by Cypress - Product Family Presentation Rev **
CapSense Home Page: www.cypress.com/CapSense
Introduction to CapSense Workshop: www.cypress.com/training/workshops
Getting Started with CapSense Design Guide: www.cypress.com/CapSenseDesignGuide
CY8C20xx7/S CapSense Design Guide: www.cypress.com/CY8C20xx7DesignGuide
CapSense MBR3 Evaluation Kit (CY3280-MBR3) Page: www.cypress.com/MBR3Kit
CapSense Starter Kit (AEK-CY8C20xx7) Page: www.cypress.com/CapSenseStarterKit
PSoC 4200 Pioneer Kit (CY8CKIT-042) Page: www.cypress.com/CY8CKIT-042
PSoC 3 Development Kit (CY8CKIT-030) Page: www.cypress.com/CY8CKIT-030
EZ-Click Page: www.cypress.com/EZClick
PSoC Designer Page: www.cypress.com/PSoCDesigner
PSoC Creator Page: www.cypress.com/PSoCCreator
Cypress Product Roadmap: www.cypress.com/CapSenseRoadmaps
References and Links
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