CY3280-MBR2 CapSense(R) ExpressTM with SmartSenseTM Auto-Tuning Kit Guide Doc. # 001-71857 Rev. *C Cypress Semiconductor 198 Champion Court San Jose, CA 95134-1709 Phone (USA): 800.858.1810 Phone (Intnl): 408.943.2600 http://www.cypress.com Copyrights Copyrights (c) Cypress Semiconductor Corporation, 2012-2013. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and foreign), United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without the express written permission of Cypress. Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress' product in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Use may be limited by and subject to the applicable Cypress software license agreement. PSoC and CapSense are registered trademarks of Cypress Semiconductor Corporation. PSoC Designer, SmartSense, and CapSense Express are trademarks of Cypress Semiconductor Corporation. All other products and company names mentioned in this document may be the trademarks of their respective holders. Purchase of I2C components from Cypress or one of its sublicensed Associated Companies conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips. As from October 1st, 2006 Philips Semiconductors has a new trade name - NXP Semiconductors. Flash Code Protection Cypress products meet the specifications contained in their particular Cypress Datasheets. Cypress believes that its family of products is one of the most secure families of its kind on the market today, regardless of how they are used. There may be methods, unknown to Cypress, that can breach the code protection features. Any of these methods, to our knowledge, would be dishonest and possibly illegal. Neither Cypress nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as "unbreakable." Cypress is willing to work with the customer who is concerned about the integrity of their code. Code protection is constantly evolving. We at Cypress are committed to continuously improving the code protection features of our products. 2 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C Contents 1. Introduction 1.1 1.2 1.3 1.4 1.5 1.6 Kit Contents .................................................................................................................5 Factory Default Configuration ......................................................................................5 Reference Documents .................................................................................................5 Acronyms.....................................................................................................................6 Document Revision History ........................................................................................6 Documentation Conventions .......................................................................................6 2. Getting Started 2.1 2.2 3.2 9 Before you Begin .........................................................................................................9 Installation Procedure ..................................................................................................9 3. Kit Operation 3.1 5 13 CY8CMBR2110 CapSense Controller Features........................................................14 3.1.1 Configuring CY8CMBR2110 CapSense Controller ........................................14 Kit Features ...............................................................................................................16 3.2.1 SmartSense Auto-Tuning ...............................................................................16 3.2.2 Toggle (Touch ON/OFF) .................................................................................18 3.2.2.1 Enable Toggle (Touch ON/OFF)......................................................18 3.2.2.2 Test CapSense Buttons with Toggle (Touch ON/OFF) Enabled .....18 3.2.3 Flanking Sensor Suppression (FSS)..............................................................19 3.2.3.1 Enable Flanking Sensor Suppression..............................................19 3.2.3.2 Test CapSense Buttons with FSS Enabled .....................................19 3.2.4 LED ON Time .................................................................................................20 3.2.4.1 Enable LED ON Time ......................................................................20 3.2.4.2 Test CapSense Buttons with LED ON Time Enabled ......................20 3.2.5 Button Auto Reset (ARST) .............................................................................21 3.2.5.1 Enable Button Auto Reset................................................................21 3.2.5.2 Test CapSense Buttons with ARST Enabled...................................21 3.2.6 Debounce Control ..........................................................................................22 3.2.6.1 Enable Debounce Control................................................................22 3.2.6.2 Test CapSense Buttons for Debounce Control................................22 3.2.7 Buzzer Signal Output .....................................................................................23 3.2.7.1 Enable Buzzer Signal Output...........................................................23 3.2.7.2 Test CapSense Buttons for Buzzer Signal Output...........................23 3.2.8 Host Controlled GPOs....................................................................................24 3.2.8.1 Drive Host Controlled GPOs ............................................................24 3.2.8.2 Test Host Controlled GPO LEDs .....................................................24 3.2.9 Power-On LED Effects ...................................................................................25 3.2.9.1 Enable Power-On LED Effects.........................................................25 3.2.9.2 Test CapSense Buttons with Power-On LED Effects Enabled ........25 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 3 Contents 3.2.10 Button Controlled LED Effects ....................................................................... 26 3.2.10.1 Enable Button Controlled LED Effects............................................. 26 3.2.10.2 Test CapSense Buttons with Button Controlled LED Effects .......... 26 3.2.11 System Diagnostics ....................................................................................... 27 3.2.11.1 Enable System Diagnostics ............................................................. 27 3.2.11.2 Test System Diagnostics - CapSense Button Short to Ground ....... 27 3.2.11.3 Test System Diagnostics - CapSense Button to Button Short......... 28 3.2.11.4 Test System Diagnostics - CapSense Button to Vdd Short............. 29 4. Hardware 4.1 4.2 4.3 4.4 5. Sample Configurations 5.1 4 35 Demonstration of Features using Sample Configuration Files .................................. 35 5.1.1 Loading Configuration File 1 .......................................................................... 35 5.1.2 Loading Configuration File 2 .......................................................................... 37 5.1.3 Loading Configuration File 3 .......................................................................... 38 A. Appendix A.1 A.2 A.3 31 Power Block............................................................................................................... 32 CY8CMBR2110 Functional Block.............................................................................. 33 I2C to USB Bridge Block ........................................................................................... 33 Connector Details ...................................................................................................... 34 4.4.1 USB-IIC Connector ........................................................................................ 34 4.4.2 Expansion Connector..................................................................................... 34 39 Schematics ................................................................................................................ 39 Board Layouts ...........................................................................................................42 Bill of Materials (BOM)............................................................................................... 47 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 1. Introduction Thank you for your interest in the CY3280-MBR2 CapSense(R) ExpressTM with SmartSenseTM AutoTuning Kit. This kit is designed to showcase the abilities of the CY8CMBR2110 register configurable CapSense controller. The CY8CMBR2110 controller is equipped with SmartSense, which enables engineers to go from prototyping to mass production without tuning for manufacturing variations in PCB and overlay material properties. This guide provides details on the kit contents, installation procedure, hardware descriptions, sample configurations, schematics, and the bill of materials. The kit package includes the EZ-Click customizer tool, which is required to configure the kit. For more information and to download the tool, visit http://www.cypress.com/go/ez-click. 1.1 1.2 Kit Contents CY3280-MBR2 kit Two AAA batteries (unassembled) Overlay (3-mm thickness) A to Mini-B USB cable Screw driver Five samples of CY8CMBR2110-LQXI CY3280-MBR2 kit CD/DVD Flex-PCB (with 1-mm overlay) Quick start guide Factory Default Configuration The kit installation folder includes three configuration files that demonstrate several features. The Sample Configurations chapter on page 35 provides details of these configuration files. When shipped, the CY3280-MBR2 board is configured with Sample Configuration1 file. 1.3 Reference Documents The following documents can be used for reference: CY8CMBR2110 CapSense Design Guide CY8CMBR2110 Datasheet EZ-Click Customizer Tool User Guide CY3280-BSM Getting Started with CapSense Guide CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 5 Introduction 1.4 Acronyms Acronym 1.5 Definition BSM Simple Button Module CSD CapSense Sigma-Delta ESD Electrostatic Discharge GUI Graphic User Interface IIC Inter Integrated Circuit LED Light Emitting Diode MBR Mechanical Button Replacement NC Not Connected PCB Printed Circuit Board PC Personal Computer USB Universal Serial Bus Document Revision History Table 1-1. Revision History Creation Revision PDF Date 1.6 Origin of Change Description of Change ** 04/04/2012 ZINE Initial version of kit guide *A 11/16/2012 ZINE Updated Getting Started chapter on page 9. Updated all images. *B 03/04/2013 ZINE Updated Title Updated all images in Chapter 2 Updated Procedure in Configuring CY8CMBR2110 CapSense Controller on page 14 Updated Configuring CY8CMBR2110 CapSense Controller on page 14 and Kit Features on page 16 Updated Table 4-1 on page 32 Updated Appendix chapter on page 39 *C 05/22/2013 ZINE Updated Kit Operation chapter on page 13. Documentation Conventions Table 1-2. Document Conventions for Guides Convention 6 Usage Courier New Displays file locations, user entered text, and source code: C:\ ...cd\icc\ Italics Displays file names and reference documentation: Read about the sourcefile.hex file in the PSoC Designer User Guide. [Bracketed, Bold] Displays keyboard commands in procedures: [Enter] or [Ctrl] [C] CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C Introduction Table 1-2. Document Conventions for Guides Convention Usage File > Open Represents menu paths: File > Open > New Project Bold Displays commands, menu paths, and icon names in procedures: Click the File icon and then click Open. Times New Roman Displays an equation: 2+2=4 Text in gray boxes Describes Cautions or unique functionality of the product. CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 7 Introduction 8 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 2. Getting Started This chapter describes the installation of the CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit. 2.1 Before you Begin All Cypress software installations require administrator privileges, but this is not required to run the installed software. 1. Shut down any Cypress software that is currently running. 2. Disconnect ICE-Cube or MiniProg1 devices from your computer. 2.2 Installation Procedure Install the EZ-Click customizer tool to load and run the sample configurations onto the board. You can also build your own configuration file using this tool. Follow these steps to install the CY3280MBR2 kit package: 1. Insert the kit CD/DVD into the CD/DVD drive of your PC. The CD/DVD is designed to auto-run and the kit installer startup screen appears. Note You can also download the latest kit installer from http://www.cypress.com/go/CY3280MBR2. Three different types of installers are available for download. a. CY3280-MBR2_ISO: This file (ISO image) is an archive file of the optical disc provided with the kit. You can use this to create an installer CD/DVD or extract information using WinRar or similar tools. b. CY3280-MBR2_ Single Package: This executable file installs the contents of the kit CD/DVD, which includes PSoC Programmer, PSoC Designer, kit code examples, kit hardware files, and user documents. c. CY3280-MBR2_Single Package (without prerequisites): This executable file installs only the kit contents, which includes kit code examples, hardware files, and user documents. 2. Click Install CY3280-MBR2 to start the kit installation, as shown in Figure 2-1. CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 9 Getting Started Figure 2-1. Kit Installer Startup Screen Note If auto-run does not execute, double-click cyautorun.exe file on the root directory of the CD/DVD, as shown in Figure 2-2. To access the root directory, click Start > My Computer > CY3280-MBR2 <drive:>. Figure 2-2. Root Directory of CD/DVD 3. On the startup screen, click Next to start the installer. 4. The InstallShield Wizard screen appears. On this screen, choose the folder location to install the setup files. You can change the folder location for setup files using Change, as shown in Figure 2-3. 5. Click Next to launch the kit installer. 10 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C Getting Started Figure 2-3. InstallShield Wizard 6. On the Product Installation Overview screen, select the installation type that best suits your requirement. The drop-down menu has three options: Typical, Complete, and Custom, as shown in Figure 2-4. If you are uncertain, proceed with the default setting (Typical). 7. Click Next to start the installation. Figure 2-4. Installation Type Options 8. When the installation begins, a list of all packages appear on the Installation Page. A green checkmark appears against every package that is downloaded and installed, as shown in Figure 2-5. 9. Wait until all the packages are downloaded and installed successfully. CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 11 Getting Started Figure 2-5. Installation Page 10.Click Finish to complete the installation. Figure 2-6. Installation Complete 12 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 3. Kit Operation The CY8CMBR2110 CapSense controller supports multiple features. The CY3280-MBR2 CapSense Express Kit package includes the hardware required to demonstrate these features. This chapter details these features along with how to use them with the kit. To start using the kit, open the case using the screw driver and insert the two AAA batteries in the battery holder. Assemble the case using the screw driver provided with the kit. Touch the power button first and ensure the power button, LED1, and LED2 light up. Each CapSense button is mapped to an LED such that activation of a button can be verified by monitoring the LED status. The ON status of LEDs indicate that the CapSense buttons are active. The Flex-PCB with 10 buttons can be connected to the kit via the 44-pin expansion connector (see Hardware chapter on page 31 for details). Power off the kit before connecting the Flex-PCB. When the kit is powered, a finger touch on the Flex-PCB buttons lights up the respective LED on the kit. Figure 3-1. CY8CMBR2110 CapSense Controller Kit with Flex-PCB CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 13 Kit Operation Figure 3-2. Expansion Connector Pin 2 Pin 25 Pin 27 Pin 29 Pin 31 Pin 33 Pin 35 Pin 37 Pin 39 Pin 41 Pin 43 Pin 1 Pin 3 Pin 5 Pin 7 Pin 9 Pin 11 Pin 13 Pin 15 Pin 17 Pin 19 Pin 21 Pin 23 Pin 4 Pin 6 Pin 8 Pin 10 Pin 12 Pin 14 Pin 16 Pin 18 Pin 20 Pin 22 Pin 24 Pin 26 Pin 28 Pin 30 Pin 32 Pin 34 Pin 36 Pin 38 Pin 40 Pin 42 Pin 44 3.1 CY8CMBR2110 CapSense Controller Features The CY8CMBR2110 controller has the following features: SmartSense Auto-Tuning - Supports auto-tuning Toggle (Touch ON/OFF) - Allows mechanical button replacement Flanking sensor suppression - Provides discrimination between closely spaced sensors LED ON time - Provides better visual feedback based on button press Button auto reset - Prevents stuck sensor, caused by placing a metal object close to the sensor Debounce control - Prevents false button trigger Buzzer signal output - Enables connecting the buzzer directly to the device Host controlled general-purpose output (GPO) - Enables control by the host (I2C master) Power-on LED effects Button controlled LED effects System diagnostics - supports production testing and debugging See the CY8CMBR2110 datasheet for more details on these features. The CY3280-MBR2 CapSense Express Kit can be configured using the EZ-Click customizer tool. Three configuration file projects are included with the kit. Additional configurations can be generated using the tool. 3.1.1 Configuring CY8CMBR2110 CapSense Controller Follow these steps to configure the CY8CMBR2110 controller: To configure the kit and test the features supported by it, follow these steps: 1. Connect the CY3280-MBR2 kit to the PC via the USB port using the USB cable and move the switch position to GUI. Ensure USB Status LED glows. 2. Open the EZ-Click customizer tool from the default location: Start > All Programs > Cypress > EZ-Click <version> > EZ-Click. 3. Create a new project in the EZ-Click customizer tool by clicking on New Project under File menu. 4. In the Main console tab, choose the Cypress device to be CY8CMBR2110. 14 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C Kit Operation 5. Connect the kit to the EZ-Click tool using the following steps. a. Click on the Connect button on the Main Console tab of the EZ-Click customizer tool. The EZ-Click will throw an error as shown. Click OK on the pop-up window. Ensure USB Power LED glows. b. Touch the Power button to turn ON the kit. Ensure Power button, LED1, LED2 and Attention button glows. c. Click the Connect button on the Main Console tab of the EZ-Click customizer tool. Ensure you see the device connected in the status window of the Main Console tab. 6. Select the number of buttons as desired. You can select up to 10 buttons for any configuration. The numbering starts with 0 in the EZ-Click customizer tool and is mapped to button 1 of the kit. Button 1 in the tool maps to button 2 of the kit and so on. 7. Modify the project to enable features as mentioned in the sections 3.2.2 to 3.2.11. 8. Generate the configuration file by pressing Ctrl + G. 9. Click on Apply Current Config under Configuration menu in the EZ-Click customizer tool. 10.Touch the Power button to turn ON the kit and observe the feature as explained in the respective sections. Note: A sample EZ-Click configuration file Sample Configuration1 file is pre-loaded into the kit. The kit will support the features mentioned in 5.1.1 Loading Configuration File 1 on page 35 by default. To know more about Sample configurations see Sample Configurations on page 35. CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 15 Kit Operation 3.2 Kit Features The following sections demonstrate each feature of this device. 3.2.1 SmartSense Auto-Tuning The CY8CMBR2110 CapSense controller is built with a robust CSD capacitive sensing method and patented SmartSense auto-tuning algorithm. SmartSense Auto-Tuning tunes each sensor automatically at power up; it then monitors and maintains optimum sensor performance during run time. This technology adapts for manufacturing variation in PCBs, environmental conditions, and noise sources such as LCD inverters, AC line noise, and switch-mode power supplies, and automatically tunes them out. SmartSense auto-tuning feature does not need to be enabled using EZ-Click and is automatically enabled on power-up. This feature can be verified on all the buttons, which are enabled. This kit is pre-loaded with Sample Configuration1, which supports 10 buttons and all 10 buttons demonstrates SmartSense by default. This feature is demonstrated as follows. 1. Ensure that the Power select switch is in BAT position. Power the kit by touching the Power button. 2. Touch any button and observe that the respective LED lights up without any manual tuning. 3. Power off the kit. Connect the Flex-PCB and then power the kit. When there is a finger touch on the Flex-PCB, the respective LED on the kit lights up without any tuning. The change in sensor parasitic capacitance (Cp) due to the Flex-PCB and the overlay is auto tuned by the SmartSense Auto-Tuning algorithm. Hence, no manual tuning is required. 4. Flex-PCB has a 1 mm overlay pasted on top of it. You can also use the 3 mm overlay provided with the kit on top of 1mm overlay in the same way as explained above to verify SmartSense auto-tuning feature. Notes 16 Button 2, Left, and Up navigation buttons on the Flex-PCB may not work with 4 mm overlay (1 mm + 3 mm). The loss of sensitivity of these buttons is due to the overlay thickness and small size of these buttons. To find the required button diameter for particular overlay thinness, refer to the CY8CMBR2110 Design Toolbox. It is recommended not to use the buttons on the main kit while the Flex-PCB is connected to the kit. The exposed Flex-PCB header pins should not be touched while the kit is powered ON. Touching these pins can act as adding the required finger capacitance. This will lead to false triggers. The Flex-PCB is for demonstrating SmartSense Auto-tuning feature and cannot be used for your product design. CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C Kit Operation Figure 3-3. Demonstration of SmartSense Auto-Tuning with Flex-PCB SmartSense Auto-Tuning algorithm can also be tested on the Simple Button Module (BSM) board. The BSM board can be connected to the kit and tested for SmartSense Auto-Tuning in the same way as the Flex-PCB. BSM board is not provided as part of this kit. To purchase or know more about BSM board, refer to the Cypress website. The Flex-PCB needs to be disconnected from the kit to test the features mentioned in the subsequent sections. The following sections demonstrates how to enable and verify various visual and audio features of the kit. These features require the kit to be configured using the EZ-Click customizer tool. Follow the steps below to observe the features discussed in sections 3.2.2 to 3.2.10. a. Create a new project in the EZ-Click customizer tool by following the steps 1-7 in section 3.1.1. b. Modify the project to enable features explained in the following sections. CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 17 Kit Operation c. Apply the configuration to the kit by following step 7-9. d. Verify the feature as explained in the sections 3.2.2 to 3.2.10. Ensure that you have a new project every time you verify a different feature. Enabling two or more features may or may not work at the same time. See the CY8CMBR2110 datasheet to know about the features, which will not work together. 3.2.2 Toggle (Touch ON/OFF) 3.2.2.1 Enable Toggle (Touch ON/OFF) Go to the Device Config tab; select the Toggle (Touch ON/OFF) checkbox to enable the toggle feature for the desired number of buttons. The Figure 3-4 shows toggle feature enabled in four buttons. Figure 3-4. Toggle (Touch ON/OFF) Feature GUI 3.2.2.2 Test CapSense Buttons with Toggle (Touch ON/OFF) Enabled 1. Touch a CapSense button for which the Toggle (Touch ON/OFF) feature is enabled; the respective LED turns on. 2. Touch the same button again; the LED turns off. 3. On the next touch, the LED goes on again. 18 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C Kit Operation Figure 3-5. Toggle (Touch ON/OFF) Enabled Button LED glows on touch Button is "on" even after touch is removed 3.2.3 Flanking Sensor Suppression (FSS) 3.2.3.1 Enable Flanking Sensor Suppression Button goes "off" on second touch Go to the Device Config tab; select the Flanking Sensor Suppression checkbox to enable the FSS feature for the desired number of buttons. Figure 3-6. FSS Enabled 3.2.3.2 Test CapSense Buttons with FSS Enabled 1. Touch a FSS-enabled CapSense button; the respective LED turns on. 2. Without removing the touch, touch another FSS-enabled button; the LED does not glow for the second button. 3. Remove the touch from the first button. Now, touch any other FSS-enabled button; the respective LED glows. CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 19 Kit Operation Figure 3-7. FSS Enabled Button LED glows on touch 3.2.4 LED ON Time 3.2.4.1 Enable LED ON Time Second button does not glow if the touch on the first button is continued Second button glows after the finger from the first touched button is removed Go to the Visual Config tab; select the LED ON time checkbox to enable this feature. This is a global setting applicable for all CapSense buttons. To set the time, configure the LED ON time menu below the checkbox. Figure 3-8. LED ON Time Enabled 3.2.4.2 Test CapSense Buttons with LED ON Time Enabled Touch any CapSense button; the respective LED turns on. When the finger is released, the LED turns off after the duration specified in LED on time (msec) in the Visual Config tab. 20 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C Kit Operation Figure 3-9. LED ON Time Enabled Button LED glows on touch 3.2.5 Button Auto Reset (ARST) 3.2.5.1 Enable Button Auto Reset Button is "on" even after touch is removed Button goes "off" after the LED On time Go to the Device Config tab; select the Auto reset period menu to enable this feature. The reset time can be set as either 5 or 20 seconds. Figure 3-10. ARST Enabled 3.2.5.2 Test CapSense Buttons with ARST Enabled Touch any CapSense button; the respective LED turns on. Do not release the button; keep the finger pressed for 5 seconds or 20 seconds, as selected. Notice that the LED turns off automatically after 5 seconds or 20 seconds according to the setting applied. Release the buttons and touch the same buttons again, it works as usual. CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 21 Kit Operation Figure 3-11. ARST Enabled Button LED glows on touch 3.2.6 Debounce Control 3.2.6.1 Enable Debounce Control Button goes off when continuously touched for more than the ARST Go to the Device Config tab; enter the required debounce number in the Debounce menu. Enter a value from 1 to 255 in the option available for CS0 and CS1-CS9. Figure 3-12. Setting Debounce Parameter 3.2.6.2 Test CapSense Buttons for Debounce Control This parameter determines the minimum duration for which the finger must be present on the button to report a "Sensor On". For example, put 55 in the debounce parameter for CS1-CS9. To calculate the time in milliseconds, the factor 35 should be multiplied with the debounce parameter value. This factor value is only for default settings. For other settings, see the CY8CMBR2110 datasheet. In this case, any CapSense button should be touched more than (35 x 55) = 1925 ms to turn it on. 22 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C Kit Operation Figure 3-13. Debounce Enabled Button does not glow if pressed for less than the time set in the Debounce parameter settings 3.2.7 Buzzer Signal Output 3.2.7.1 Enable Buzzer Signal Output Go to the Device Config tab; enable the feature by selecting the Buzzer checkbox in the Buzzer Configuration section of the page. Set the frequency, number of pins, type (AC buzzer-1 pin or AC buzzer-2 pin), and output duration timing using the respective menu options. Buzzer idle state indicates the state of the buzzer pins when buzzer is not ON. You can configure your buzzer to be in sinking or sourcing mode by selecting HIGH or LOW respectively as your Buzzer Idle state. Figure 3-14. Buzzer Signal Output Enabled 3.2.7.2 Test CapSense Buttons for Buzzer Signal Output The button touch gives an audio feedback. The characteristics of the buzzer sound, such as frequency and duration can be observed according to the settings. CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 23 Kit Operation 3.2.8 Host Controlled GPOs 3.2.8.1 Drive Host Controlled GPOs Go to the Device Config tab; drive host controlled GPOs, HCG1 and HCG2, by selecting the Low or High options in the drop-down. The kit does not have any LEDs mapped to HCG3 and HCG4. These GPOs use the same pins as the buzzer output. By default, the LEDs light up after the device is powered. Note HCG3 and HCG4 are not available when the AC buzzer-2 pin is enabled. When the AC buzzer-1 pin is enabled, HCG4 is disabled. Figure 3-15. Host Controlled GPOs GUI 3.2.8.2 Test Host Controlled GPO LEDs Drive the HCG1 and HCG2 to Low in the EZ-Click tool to see the respective LEDs light up. Driving the HCGs High will turn off the LEDs. Figure 3-16. Host Controlled GPO LEDs 24 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C Kit Operation 3.2.9 Power-On LED Effects 3.2.9.1 Enable Power-On LED Effects Go to the Visual Config tab; select the At Power On checkbox under LED Effects to enable the feature. Select the values for different parameters such as ramp up time, ramp down time, high time, low time, high brightness, low brightness, and LED effect repeat rate in the At Power On tab. Figure 3-17. Power-On LED Effects Enabled 3.2.9.2 Test CapSense Buttons with Power-On LED Effects Enabled Observe the LED effects according to the configured setting at every power cycle. Figure 3-18. Power-On LED Effect Pattern CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 25 Kit Operation TRU - Ramp up time TH - High brightness time TRD - Ramp down time TL - Low brightness time 3.2.10 Button Controlled LED Effects 3.2.10.1 Enable Button Controlled LED Effects Go to the Visual Config tab; select the On Button Touch checkbox under LED Effects to enable the feature. Select the values for different parameters such as ramp up time, ramp down time, high time, low time, high brightness, low brightness, and LED effect repeat rate in the On Button Touch tab. Figure 3-19. Button Controlled LED Effects Enabled 3.2.10.2 Test CapSense Buttons with Button Controlled LED Effects On every button touch, the respective LED effects can be observed according to the configured setting. 26 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C Kit Operation Figure 3-20. Button Controlled LED Effects Pattern 3.2.11 System Diagnostics 3.2.11.1 Enable System Diagnostics The System Diagnostics feature is enabled in the CY8CMBR2110 CapSense controller by default; no change is needed in the kit. This feature sends out a 5-ms pulse on the GPO corresponding to a faulty sensor. The GPO pins are connected via the 44-pin expansion connector, which can be probed to observe the 5-ms pulse. See Connector Details on page 34 for details of the expansion connector and to know the pin associated with each button and GPO. The pin number can be counted starting from the lower pin on the USB connector side, as shown in the following figures. Note that all odd numbered pins are at the bottom half of the connector. The system diagnostics feature can also be observed in the EZ-Click Customizer Tool. 3.2.11.2 Test System Diagnostics - CapSense Button Short to Ground Follow these steps: 1. Touch the power button to turn off the kit. 2. Connect a wire between pin #3 and pin #5 of 44-pin expansion connector. This shorts the button #5 sensor to ground. 3. Touch the power button to turn on the kit. The CapSense controller executes the System Diagnostics routine on power up and detects the sensor shorted to ground. Observe a pulse of 5 ms width on the GPO #5 pin, which is also visible on the corresponding LED. This indicates that button #5 is shorted to ground. The CapSense controller disables the button sensors that are shorted to ground. Touch button #5 and see that the corresponding LED is not turned on. Other buttons work normally. Figure 3-21. Shorting Button #5 (pin #3) to Ground (pin #5) CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 27 Kit Operation To observe the feature in GUI, go to Production line testing tab and click on the Start test button. Figure 3-22. System Diagnostics GUI - Shorting Button to Ground 3.2.11.3 Test System Diagnostics - CapSense Button to Button Short Follow these steps: 1. Touch the power button to turn off the kit. 2. Connect a wire between pin #3 and pin #9 of the 44-pin expansion connector. This shorts button #5 and button #2 sensors. 3. Touch the power button to turn on the kit. Note: The button numbering in the Production Testing tab in the EZ-Click customizer tool starts with 0, which is linked to button 1 of the kit. Similarly, button 1 in the tab is mapped to button 2 of kit and so on. The CapSense controller executes the System Diagnostics routine on power up and detects the sensor to sensor short. Observe a pulse of 5 ms width on the GPO #5 and GP0 #2 pins, which is also visible on the corresponding LEDs. This indicates that button #5 is shorted to button #2. The CapSense controller disables the button sensors that are shorted to each other. Touch button #5 and button #2; note that the respective LEDs are not turned on. Other buttons work normally. Figure 3-23. Shorting Button #5 (pin #3) to Button #2 (pin #9) To observe the feature in GUI, go to Production line testing tab and click on the Start test button. 28 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C Kit Operation Figure 3-24. System Diagnostics GUI - Shorting Button to Button 3.2.11.4 Test System Diagnostics - CapSense Button to Vdd Short Follow these steps: 1. Touch the power button to turn off the kit. 2. Connect a wire between pin #27 and pin #41 of the 44-pin expansion connector. This shorts button #6 sensor with Vdd. 3. Touch the power button to turn on the kit. The CapSense controller executes the System Diagnostics routine on power up and detects the sensor to Vdd short. Observe a pulse of 5 ms width on the GPO #6 pin, which is also visible on the corresponding LED. This indicates that button #6 is shorted to Vdd. The CapSense controller disables the button sensors that are shorted to ground. Touch button #6; note that the corresponding LED is not turned on. Other buttons work normally. Figure 3-25. Shorting Button #6 (pin #27) to Vdd (pin #41) To observe the feature in GUI, go to Production line testing tab and click on the Start test button. CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 29 Kit Operation Figure 3-26. System Diagnostics GUI - Shorting Button to Vdd 30 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 4. Hardware The CY3280-MBR2 CapSense Express Kit is designed to demonstrate the features of the CY8CMBR2110 register configurable CapSense controller. Figure 3-1 on page 13 illustrates ten CapSense buttons and CapSense-based power and attention buttons. The kit has two status LEDs to demonstrate the direct LED control feature. The CY8CMBR2110 controller supports multiple features, which are discussed in the Kit Operation chapter on page 13. The CY3280-MBR2 kit has two connectors: a 44-pin expansion connector and a USB-IIC connector. The expansion connector is used to demonstrate the SmartSense Auto-Tuning feature. The USB-IIC connector helps to power and configure the kit using the GUI. Figure 4-1. CY3280-MBR2 Kit CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 31 Hardware Figure 4-2 shows the block diagram of the CY3280-MBR kit. The block diagram can be classified into four sections: Power, CY8CMBR2110 functional blocks, I2C to USB, and Connectors (USB-IIC and 44-pin expansion connector). Each section is explained in detail here. Figure 4-2. Block Diagram Power/Wake LEDs CY8CMBR2044 CapSense Controller AAA Batteries External Source Ten CapSense Buttons Series pass Controlled Switch Power Select switch GUI Vdd I2C Power and Status LEDs CY8C24894 CapSense Controller Ten Output LEDs CY8CMBR2110 CapSense Controller Buzzer Output Two Host Controlled LEDs Expansion Connector USBI2C/J3 Connector FlexPCB/BSM Board GUI 4.1 Power Block This block consists of the power source, series pass switch, power LED, and the CY8CMBR2044 CapSense controller. The kit supports three power sources. Table 4-1. Power Source No. 1 Power Source Voltage Levels (Volts) Power Select Switch Position 3.0 BAT 3.3 GUI 3.0 EXT AAA batteries provided with the kita 2 GUI when connected to PC via USB-IIC connector 3 External sourcec b a. An estimated battery life of ~40hrs can be achieved on an AAA pack when all blocks are turned on. An estimated battery life of one year can be achieved on an AAA pack when the unit is in standby/sleep. b. GUI has four power options - 1.8 V, 2.5 V, 3.3 V, and 5 V; however, it only supports 3.3 V for this kit. The USB status LED glows when the kit is connected to PC. USB power LED indicates that the kit is powered through USB. c. To power the kit in this mode change the switch position to EXT and connect the external voltage source and ground to the VDD_EXT (pin 43) and GND (pin 40) pins respectively of the 44-pin connector. The series pass switch, which is controlled by the CY8CMBR2044 CapSense controller is responsible for the power supplied to the CY8CMBR2110 functional block. To power the kit, at least one of the above sources should be active. Touch the CapSense-based Power button to see the LED glowing and ensure that the kit is powered. The kit has various protection circuits driven by the CY8CMBR2044 chip: 32 A fuse is present in the power block to limit the external consumption to 200 mA. A diode is present at VDD-Ext to limit the input voltage to 6 V. ESD protection is enabled for USB lines. CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C Hardware Figure 4-3. Power Supply System Structure Schematic VDD_Ext SW1 VIN 2 D1 MBR0520L 1 1 1 2 3 4 Battery Clip AAA + R2 - 1 Zero E 6 5 5 C3 + 1206 1206 10 uFd 16v VOUT GND1 2 GND EN 1 1 C2 0.1uf R1 665 E VDD_SW VDD_Dev PWR_ON NC 2 D2 LED Red 0805 R3 1 Zero E GND Y 4 PWR_ON_INV SN74LVC1GU04 1 MIC94090 SC-70-6 VIN VDD_Dev VDD_SW VDD_USB VDD_Ext VDD_BAT VIN VDD_SW VDD_Ext VDD_USB VDD_BAT VIN Test Points C5 2200 pFd VIN C6 0.1uf 0805 POWER 1 VIN GND Series Pass Switch VDD_Dev XRES CS3 ATTN 1 2 5.1K 1 Wake_BTN Sensor CapSense Button 8mm Round 10 VDD_SW 9 1 CS2 CY8CMBR2044 D3 R7 5.1K Wake 1 2 2 0805 R8 1 1206R LED Red 665 E 2 8 5 ARST VSS DELAY 12 11 0603 14 13 VDD GPO3 15 16 GPO2 CapSense Button 8mm Round TOGGLE/FSS CS0 4 GPO0 CS1 3 Sensor R6 GPO1 SCANRATE/SLEEP 7 2 VIN 6 1 Wake PWR_ON CMOD 0603 U3 2 R5 5.1K 1 PWR_BTN R4 5.1K 0603 1 0.1 uFd 5 - VIN 0603 VCC A 3 2 3 NC 10 uFd 16v AAA 1.5V 1280mAh Battery 2 C1 0603 VIN 6 PWR_ON_INV VIN 1206R 1 2 3 4 Battery Clip AAA 4 SP4T C4 J2 TWO 0805 2 VIN U2 U1 1 4 J1 VDD_SW 2 DNP SOD123 3 0805 VDD_USB 2 2 VDD_BAT PWR_BTN 560E Wake_BTN 560E 0402 0402 R9 R10 Capsense(CY8CMBR2044) Based Power Button and I2C Attn. control section 4.2 CY8CMBR2110 Functional Block This block demonstrates the features mentioned in 3.2 Kit Features on page 16. It consists of: 4.3 CY8CMBR2110 CapSense controller 10 CapSense buttons as input 10 output LEDs that are directly mapped to CapSense buttons A single line buzzer for audio output Two host-controlled configurable LEDs 22x2 connector to bring out all I/Os and power line of the CY8CMBR2110 chip Flex-PCB/BSM board, which can be connected via the 44-pin expansion connector and demonstrates the SmartSense Auto-Tuning feature of the device I2C to USB Bridge Block This block functions as a bridge between the USB (PC) and I2C communication on the CY8CMBR2110 chip. The kit can be configured using this bridge with the help of the GUI. To configure the kit, either use the sample configuration files provided with the kit package or use the GUI via the USB-IIC bridge. In addition to the I2C to USB protocol conversion, the block also controls power to the CY8CMBR2110 chip via the GUI and USB. The block consists of the CY8C24894 chip, which is responsible for the USB-IIC protocol conversion and power control. CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 33 Hardware 4.4 Connector Details 4.4.1 USB-IIC Connector This kit is configurable through the IIC interface. The USB-IIC connector enables the kit to connect to the PC via the USB cable provided with the kit. This connector serves two main purposes: 4.4.2 Enables powering the kit from the GUI Enables configuring the kit by connecting to the GUI via the USB-IIC header Expansion Connector Table 4-2 shows various signals connected to the 44-pin expansion connector. The CS inputs (CS0CS9) and GPOs linked to each CapSense button are brought to the 44-pin expansion connector. This is used to verify SmartSense Auto-Tuning by connecting the Flex-PCB, BSM, or any other connecting board. The kit can be powered from an external power supply using the VDD and GND signals available in the connector. The kit also has output lines for host control and buzzer. The IIC clock and data lines from the CY8CMBR2110 chip are also brought to this connector. Table 4-2. 44-Pin Expansion Connector Pin Connected to Pin Connected to P1-1 CS8 P1-23 Wake P1-2 GPO8 P1-24 GPO 1 P1-3 CS5 P1-25 GND P1-4 XRES P1-26 GND P1-5 GPO5 P1-27 CS6 P1-6 GND P1-28 GPO6 P1-7 GPO5 P1-29 GPO3 P1-8 GPO2 P1-30 CS3 P1-9 CS2 P1-31 GPO3 P1-10 CS9 P1-32 NC P1-11 GPO9 P1-33 CS0 P1-12 GPO7 P1-34 GND P1-13 CS7 P1-35 GND P1-14 CS4 P1-36 GND P1-15 GND P1-37 I2C SDA P1-16 GND P1-38 I2C SCL P1-17 CS1 P1-39 GND P1-18 Host Cntl 0 P1-40 GND P1-19 Host Cntl 1 P1-41 VDD Dev P1-20 GPO4 P1-42 NC P1-21 Buzzer Out 0 P1-43 VDD Ext P1-22 Buzzer Out 1 P1-44 NC Note: There are two pins assigned to each of GPO3 and GPO5. This is done to make expansion connector compatible to CY3280 Universal CapSense Module Boards. 34 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 5. Sample Configurations This section discusses the high-level design process to open, build, configure, and run sample configurations using the CY3280-MBR2 CapSense Express Kit. There are three Sample configurations provided with this kit. Each sample configuration file has different configuration settings demonstrating various kit features. By default, the kit is configured with Sample Configuration 1. To use the Sample Configuration files, EZ-Click customizer tool is required. The installation details for EZ-Click customizer tool is explained in Getting Started chapter on page 9. 5.1 Demonstration of Features using Sample Configuration Files Follow the steps to run the configuration files and test the features. 5.1.1 Loading Configuration File 1 1. Connect the CY3280-MBR2 kit to the PC via the USB port using the USB cable and move the switch position to GUI. Ensure USB Status LED glows. 2. Open the EZ-Click customizer tool from the default location: Start > All Programs > Cypress > EZ-Click <version> > EZ-Click. 3. Click on Load Project under File menu. Figure 5-1 shows the default location of Load Project action. Figure 5-1. Load Project CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 35 Sample Configurations 4. Navigate to the project directory <Install_Directory>:\Program Files\Cypress\ CY3280-MBR2\<version>\Sample Configurations\Sample Configuration 1 in the Open Project - Select Project Location window. 5. Double-click on the Sample Configuration 1 file to open. Figure 5-2. Open Configuration1 File 6. Connect the kit to the EZ-Click tool using the following steps. a. Click on the Connect button on the Main Console tab of the EZ-Click customizer tool. The EZ-Click will throw an error as shown. Click OK on the pop-up window. Ensure USB Power LED glows. 36 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C Sample Configurations b. Touch the Power button to turn ON the kit. Ensure Power button, LED1, LED2 and Attention button glows. c. Click the Connect button on the Main Console tab of the EZ-Click customizer tool. Ensure you see the device connected in the status window of the Main Console tab. 7. Click on Apply Current Config under Configuration menu to apply the configuration to the kit. Figure 5-3. Apply Current Configuration 8. Touch the Power button to power the kit. 9. Verify the following features: 5.1.2 LED ON time (1.5 sec): Touch any CapSense button; the respective LED turns on. When the finger is released, the LED turns off after 1.5 seconds. Button auto reset (5 sec): Touch any CapSense button; the respective LED turns on. Do not release the finger; the button will go off automatically after 5 seconds. Automatic threshold: This feature automatically keeps an optimum finger threshold value for all the buttons. Loading Configuration File 2 The GUI images for the following steps are similar to 5.1.1 Loading Configuration File 1 on page 35: 1. Steps 1 to 3 remains the same as mentioned 5.1.1. 2. Navigate to the project directory <Install_Directory>:\Program Files\Cypress\ CY3280-MBR2\<version>\Sample Configurations\Sample Configuration 2 in the Open Project - Select Project Location window. 3. Double-click on the Sample Configuration 2 file to open. 4. Follow the steps 4 to 6 mentioned in section 5.1.1 to continue. 5. Verify the following features: Buzzer: Touch any button; the respective LED turns ON along with an audio feedback. Power-on LED effects: Observe LED effects on all the buttons upon power up. Button controlled LED effects: Observe LED effects on touching any CapSense button. Automatic threshold: This feature automatically keeps an optimum finger threshold value for all the buttons. Debounce control on Button 1: Observe that button 1 is activated only after you touch the button for approximately 1 second. CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 37 Sample Configurations 5.1.3 Loading Configuration File 3 The GUI images for the following steps are similar to 5.1.1 Loading Configuration File 1 on page 35: 1. Steps 1 to 3 remains the same as mentioned 5.1.1. 2. Navigate to the project directory <Install_Directory>:\Program Files\Cypress\ CY3280-MBR2\<version>\Sample Configurations\Sample Configuration 3 in the Open Project - Select Project Location window. 3. Double-click on the Sample Configuration 3 file to open. 4. Follow the steps 4 to 6 mentioned in section 5.1.1 to continue. 5. Verify the following features: Button auto reset (5 sec): Touch any CapSense button; the respective LED turns on. Do not release the finger; the button will go off automatically after 5 seconds. Power-on LED effects: Observe LED effects on all the buttons upon power up. Toggle + Button controlled LED effects: Touch any of the buttons 1, 2, 3, 4, 5, 6; the corresponding LED lights up showing a ramp in LED brightness. The button will remain lit till the next touch. The LED brightness ramps down to 0 on the second touch. FSS + Button LED effects: Touch any of the buttons 7, 8, 9, 10; the corresponding LED lights up showing LED effects. Keep the finger on the button and touch any of these buttons; the second button does not glow. Remove the finger from the first button and then touch any of these button; the button glows displaying LED effects. Note: You can use Sample configurations 1 and 2 with the Flex-PCB in the same way as explained in the SmartSense auto-tuning feature in Kit Operation chapter on page 13. It is not recommended to use Sample configuration 3 for Flex-PCB. 38 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C Appendix A.1 Schematics A.1.1 CY3280-MBR2 Board VDD_USB VDD_Ext SW1 VIN 2 D1 MBR0520L 1 1 1 2 3 4 Battery Clip AAA 2 + R2 - 1 Zero E 6 5 4 SP4T 5 C3 C4 1 2 3 4 Battery Clip AAA + 1206 1206 10 uFd 16v C1 VOUT GND1 2 GND EN 1 1 C2 0.1uf R1 665 E 2 PWR_ON VDD_Dev VDD_SW 3 2 3 NC 0805 R3 D2 LED Red 10 uFd 16v 1 Zero E NC VCC A GND Y 4 PWR_ON_INV SN74LVC1GU04 1 MIC94090 SC-70-6 VIN VDD_Dev VDD_SW VDD_USB VDD_Ext VDD_BAT VIN VDD_SW VDD_Dev VDD_Ext VDD_USB VDD_BAT VIN Test Points C5 2200 pFd VIN C6 0.1uf 0805 POWER 1 VIN GND Series Pass Switch VIN 14 13 VDD GPO3 16 15 CapSense Button 8mm Round GPO1 SCANRATE/SLEEP GPO0 3 XRES TOGGLE/FSS 4 CS3 1 12 2 5.1K 11 1 Wake_BTN Sensor CapSense Button 8mm Round 10 VDD_SW 9 CS2 8 CS1 CY8CMBR2044 D3 Wake R7 5.1K 1 2 2 0805 R8 1 1206R 665 E LED Red 2 7 6 5 VSS ARST CS0 DELAY ATTN 1 2 VIN Sensor R6 0603 1 CMOD 2 GPO2 0603 1 U3 0603 Wake PWR_ON 1 PWR_BTN R4 5.1K R5 5.1K 0603 5 - AAA 1.5V 1280mAh Battery 2 0.1 uFd 0603 VIN 6 PWR_ON_INV VIN 1206R J2 TWO 0805 VIN U2 U1 1 4 J1 VDD_SW 2 DNP SOD123 3 0805 VDD_BAT 2 2 A. PWR_BTN 560E Wake_BTN 560E 0402 0402 R9 R10 Capsense(CY8CMBR2044) Based Power Button and I2C Attn. control section VBUS VBUS 5.6V R13 51K R14 51K 1 2 3 4 5 6 7 8 9 10 11 12 13 14 VSENSE TPS73701DCQ R17 30.1K R18 6.8K VDD_Dev 2 0805 1 D- 1 D+ P1[7] P1[5] P1[3] P1[1] 48 47 46 45 44 43 D6 LED Red 2 2 R20 665 E R23 47E R24 47E D7 LED Red 4 5 6 DNC1 GND1GND0 D+ NC0 SN65220-Q1 VBUS ISSP J4 3 2 1 1 2 3 4 5 1 2 3 4 5 R27 665 E HDR 1x5 0402 0.01 uFd 2 VSENSE ENABLE 1 1 0805 R26 22E U6 1 C11 VOLTCNT R25 22E 2 USB MINI B R28 100K TVS4 5V 350W R22 47E I2CSCL I2CSDA Wake 42 41 40 39 38 37 36 35 34 33 32 31 30 29 57 1206R 1 1 2 3 4 5 VBUS 2 VBUS DM DP ID GND MICROSMD110FTR VBUS D+ D- F1 15 16 17 18 J3 R21 7.5K CY8C24894 P2[2] P2[0] P4[6] P4[4] P4[2] P4[0] XRES P3[4] P3[2] P3[0] P5[6] P5[4] P5[2] P5[0] 57 0805 8 9 S3 S4 S1 S2 6 7 R19 7.5K P2[3] P2[1] P4[7] P4[5] P4[3] P4[1] P3[7] P3[5] P3[3] P3[1] P5[7] P5[5] P5[3] P5[1] 2 R16 10K 2 D5 5.6V 1206R VOLTCNT D4 50 49 U5 R12 5.1K R15 24K 56 55 54 53 52 51 VDD_Dev VBUS 11 2.2 uFd VDD_Dev 0805 0805 52.3K VBUS P0[6] P0[4] P0[2] P0[0] P2[6] P2[4] R11 1 1 4 3 C10 10 nFd P7[7] P7[0] P1[0] P1[2] P1[4] P1[6] GND0 0402 Vss Vdd FB/NC GND1 C9 23 24 25 26 27 28 EN 2 Vss D+ DVdd 6 VDD_USB OUT 19 20 21 22 5 ENABLE IN 2 1 2 2 U4A P2[5] P2[7] P0[1] P0[3] P0[5] P0[7] 1 C7 0.1uf C8 1.0 uFd 0805 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 39 VDD_Dev B0 Sensor VDD_Ext 1 1206R CMOD 2 0805 C13 2.2nF Sensor CapSense Button 8mm Round R32 1 665 E LED Red D12 2 0805 R38 1 2 2 0805 CapSense Button 8mm Round R41 1 B4 1206R 665 E LED Red D14 GPO6 1 GPO7 LED Red D15 1 GPO8 LED Red D16 1 GPO9 1 U7 Sensor 665 E LED Red D13 1 GPO5 1 CS3 33 B3 2 1206R 1 CS4 2 2 0805 Sensor CapSense Button 8mm Round R45 1 1206R 665 E B5 2 0805 R46 1 1 CS5 2 2 2 0805 I2CSCL B6 665 E 1 CS6 0805 CapSense Button 8mm Round 665 E LED Red B7 Backlight LEDs 1 CS7 CapSense Button 8mm Round 2 Host Cntl 1 2 0805 CS1 CS0 GPO0 GPO1 GPO2 GPO3 GPO4 I2CSCL CS7 CS8 CS9 GPO9 GPO8 GPO7 GPO6 XRES 24 23 560E 22 560E 21 560E 20 19 18 17 0402 0402 0402 CS7 R42 CS8 R43 CS9 R44 GPO9 GPO8 GPO7 GPO6 XRES 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 I2CSCL CS3 1 R62 0 E 2 GPO6 1 R61 0 E 2 GPO1 BuzzerOut1 1 R60 0 E 2 GPO4 Host Cntl 0 CS4 1 R59 0 E 2 GPO7 CS9 1 R58 0 E 2 GPO2 XRES 1 R57 0 E 2 GPO8 22x2_RA_Recptacle CY8CMBR2110 Wake B8 1 CS8 D18 1 2 3 4 5 6 7 8 43 41 39 37 35 33 31 29 27 25 23 21 19 17 15 13 11 9 7 5 3 1 Sensor VDD_Dev LED Red D19 1 R40 R39 P1 43 41 39 37 I2CSDA 35 33 CS0 GPO0 2 0 E R52 1 31 E R53 1 29 GPO3 2 00805 27 CS6 0805 25 23 Wake 21 BuzzerOut0 19 Host Cntl 1 17 CS1 15 13 CS7 GPO9 2 0 E R55 1 11 9 CS2 0805 7 GPO5 2 0 E R56 1 5 0805 3 CS5 1 CS8 I2CSDA Sensor R48 1 1206R 1 0402 CapSense Button 8mm Round R47 1 1206R LED Red D17 Host Cntl 0 0402 560E 560E Sensor 665 E 2 CS1 CS0 GPO0 GPO1 GPO2 GPO3 GPO4 9 10 11 12 13 14 15 16 2 1206R ePad 1 GPO4 .20A FUSE F2 GPO5 1 CS2 2 1206R 0402 B2 VDD_Ext VDD_Dev TVS3 5V 350W 10 uFd 16v C12 0.1uf CS2 R37 CS3 R33 CS4 R34 CS5 R35 CS6 R36 R31 1 0402 0805 665 E 0402 2 1206R 0402 2 CapSense Button 8mm Round 0402 GPO3 LED Red D11 1 Sensor 665 E Host Cntl 1 BuzzerOut1 GPO2 LED Red D9 1 1 CS1 1206 2 R30 1 32 31 30 29 560E 28 560E 27 26 560E 25 560E 560E 0805 Vss0 CMOD CS2 CS3 Vdd CS4 CS5 CS6 2 I2CSDA BuzzerOut0 HostCntl GPO0 Vss1 HostCntl GPO1 BuzzerOut1 Attn/Sleep GPO5 2 BuzzerOut0 Host Cntl 0 GPO1 C14 B1 0805 VDD_Dev 665 E 0805 LED Red D10 1 0805 CapSense Button 8mm Round 1206R 0805 2 R29 1 0805 2 0805 0805 1 GPO0 1 CS0 D8 Sensor CapSense Button 8mm Round R49 1 1206R 665 E B9 2 2 0805 R50 1 1206R LED Red 0805 1 R51 Zero E Sensor CapSense Button 8mm Round BuzzerOut0 1 2 1 CS9 665 E 2 LS1 CMOD CMOD1 Place near U7 Buzzer CMT-1603 4kHz Sq. In 40 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C A.1.2 Flex-PCB J6 1 3 5 7 9 Flex_BTN2 11 13 Flex_BTN7 15 17 Flex_BTN1 NC 19 21 NC 23 25 27 Flex_BTN6 29 31 33 Flex_BTN0 35 37 39 41 43 Flex_BTN8 Flex_BTN5 VDD_Dev 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 2 4 6 8 10 12 14 16 18 NC 20 22 24 26 28 30 32 34 36 38 40 42 44 Flex_BTN9 Flex_BTN4 Flex_BTN3 22x2_RA_Header B8 1 Sensor Flex_BTN9 1 Sensor Flex_BTN7 1 Sensor Flex_BTN6 1 Sensor Flex_BTN0 1 Sensor Flex_BTN8 B5 1 Sensor 1 Sensor 1 Sensor CapSense Button CSB14_29X7_29OBL_1MM Flex_BTN1 1 Sensor CapSense Button CSB14_29X7_29OBL_2MM Flex_BTN3 1 Sensor CapSense Button CSB15_92X7_96OBL_1MM Flex_BTN5 B9 CapSense Button CSB_10MM_RND_2MM B2 CapSense Button CSB13_26X6_63_OBL_1MM Flex_BTN2 B7 Capsesnse button CIR11MM_1MM B4 CapSense Button CSB13_26X6_63_OBL_2MM Flex_BTN4 CapSense Button CIR11MM_2MM B1 B6 B0 CapSense Button CSB_10MM_RND B3 CapSense Button CIR12MM_1MM CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 41 A.2 Board Layouts A.2.1 CY3280-MBR2 Board Primary Side 42 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C A.2.2 CY3280-MBR2 Board Secondary Side CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 43 A.2.3 44 Power Layer CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C A.2.4 Ground Layer CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 45 A.2.5 Flex-PCB Primary Side A.2.6 Flex-PCB Secondary Side 46 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C A.3 Item Bill of Materials (BOM) Qty Reference Description Manufacturer Mfr Part Number 1 5 C2,C1,C6,C12,C7 CAP .10UF 10V CERAMIC X7R 0603 2 2 C3,C4 CAP CERAMIC 10.0UF 16V X5R 1206 Kemet C1206C106K4PACTU 3 1 C5 CAP CER 2200PF 50V 5% C0G 0805 Murata Electronics North America GRM2165C1H222JA01D 4 1 C8 CAP 1.0UF 16V CERAMIC Y5V 0805 Murata Electronics North America GRM219F51C105ZA01D 5 1 C9 CAP CER 2.2UF 10V 10% X7R 0805 Murata Electronics North America GRM21BR71A225KA01L 6 1 C10,C11 CAP 10000PF 16V CERAMIC X7R 0402 Yageo America CC0402KRX7R7BB103 7 1 C13 CAP CERM 2200PF 1% 50V NP0 1206 AVX Corporation 12065A222FAT2A 8 16 D2,D3,D6,D7, D8,D9,D10,D11, D12,D13,D14, D15,D16,D17, D18,D19 LED RED CLEAR 1206 REAR MNT SMD Stanley Electric Co BR1111R-TR 9 2 D4,D5 TVS 5.0 VOLT 600 WATT BIDIR SMB Littelfuse Inc SMBJ5.0CA 10 1 TVS3 IC TVS UNI-DIR 5V 350W Semtech SD05.TCT TE Connectivity MICROSMD110F-2 Kemet C0603C104K8RACTU 11 1 F1 POLYSWITCH 1.10A RESET FUSE SMD 12 1 F2 POLYSWITCH .20A RESET FUSE SMD TE Connectivity MINISMDC020F-2 13 2 J1,J2 CLIP BATTERY AAA/N .375X.460" SS Keystone Electronics 55TR 14 1 J3 CONN USB MINI B SMT RIGHT ANGLE TYCO 1734035-2 15 1 LS1 BUZZER AUDIO PIEZO 25V SMD CUI Inc CMT-1603 16 1 P1 CONN FMALE 44POS DL .1" R/ A GOLD Sullins Electronics Corp. PPPC222LJBN-RC 17 3 R2,R3,R51 RES CHIP 0.0 OHM 1/10 1/8W 5% 0805 SMD Panasonic - ECG ERJ-6GEY0R00V 18 3 R4,R5,R7 RES 5.1K OHM 1/16 1/10W 1% 0603 SMD Yageo Corporation RC0603FR-075K1L 19 1 R6 RES 0.0 OHM 1/10W 0603 SMD Yageo Corporation RC0603JR-070RL 20 12 R9,R10,R33,R34,R 35,R36,R37, R39,R40,R42, R43, R44 RES 560 OHM 1/16W 1% 0402 SMD Vishay/Dale CRCW0402560RFKED 21 1 R11 RES 52.3K OHM 1/10W 1% 0603 SMD Yageo RC0603FR-0752K3L 22 1 R12 RES 5.1K OHM 1/10W 5% 0603 SMD Yageo RC0603JR-075K1L 23 1 R14, R13 RES 51K OHM 1/10W 5% 0603 SMD Yageo RC0603JR-0751KL 24 1 R15 RES 24.0K OHM 1/10W 1% 0603 SMD Yageo RC0603FR-0724KL 25 1 R16 RES 10K OHM 1/10W 5% 0603 SMD Yageo RC0603JR-0710KL CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C 47 Item Qty Reference Description Manufacturer Mfr Part Number 26 1 R17 RES 30.1K OHM 1/10W 1% 0603 SMD 27 1 R18 RES 6.8K OHM 1/10W 5% 0603 SMD Yageo RC0603JR-076K8L 28 2 R19,R21 RES 7.5K OHM 1/10W 5% 0603 SMD Yageo RC0603JR-077K5L 29 3 R22,R23,R24 RES 47 OHM 1/10W 5% 0603 SMD Yageo RC0603JR-0747RL 30 2 R25,R26 RES 22 OHM 1/8W 5% 0805 SMD Panasonic - ECG ERJ-6GEYJ220V 31 1 R28 RES 100K OHM 1/10W 5% 0603 SMD Rohm MCR03EZPJ104 32 1 SW1 SWITCH MINI SLIDE SP4T APEM Components, LLC SLB1470R Micrel Inc MIC94090YC6 TR Yageo RC0603FR-0730K1L 33 1 U1 IC LOAD SW HGH SIDE 1.2A SC70-6 34 1 U2 IC SINGLE INVERTER GATE SOT-23-5 Texas Instruments SN74LVC1GU04DBVR 35 1 U3 IC MCU CAPSENSE QFN16 Cypress Semiconductor CY8CMBR2044-24LKXI 36 1 U4A IC LDO REG 1A SOT223-6 Texas Instruments TPS73701DCQ 37 1 U5 IC PSOC 16KB FLASH 56QFN Cypress Semiconductor CY8C24894-24LFXA U6 IC SINGLE USB PORT TVS SOT-23-6 Texas Instruments SN65220DBVR 38 1 39 1 U7 IC MCU CAPSENSE QFN32 Cypress Semiconductor CY8CMBR2110-24LQXI 40 16 R1,R8,R20,R27, R29,R30,R31, R32,R38,R41, R45,R46,R47, R48,R49,R50 RES 665 OHM 1/8W 1% 0805 SMD Panasonic-ECG ERJ-6ENF6650V 41 1 PCB FLEXIBLE PRINTED CIRCUIT BOARD Open Source PDC-09807 Rev03 42 1 D1 DIODE SCHOTTKY 0.5A 20V SOD-123 Fairchild Semiconductor MBR0520L 43 10 R52,R53,R55, R56,R57,R58, R59,R60,R61, R62 RES CHIP 0.0 OHM 1/10 1/8W 5% 0805 SMD Panasonic - ECG ERJ-6GEY0R00V 44 1 J4 CONN HEADER 5POS 0.1 VERT KEYED Molex 22-23-2051 45 1 D1 DIODE SCHOTTKY 0.5A 20V SOD-123 Fairchild Semiconductor MBR0520L 46 10 R52,R53,R55, R56,R57,R58, R59,R60,R61, R62 RES CHIP 0.0 OHM 1/10 1/8W 5% 0805 SMD Panasonic - ECG ERJ-6GEY0R00V 47 1 J4 CONN HEADER 5POS 0.1 VERT KEYED Molex 22-23-2051 48 1 J6 CONN HEADER .100 DUAL R/A 44POS Sullins Electronics Corp. PBC22DBAN 48 CY3280-MBR2 CapSense Express with SmartSense Auto-Tuning Kit Guide, Doc. # 001-71857 Rev. *C Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Cypress Semiconductor: CY3280-MBR2