CY8CMBR2016 CapSense Express 16 Button Matrix Controller CapSense Express 16 Button Matrix Controller Industrial temperature range: 40 C to + 85 C Features 48-pin QFN package (6 6 0.6 mm) Hardware configurable Matrix CapSense controller Does not require software tools or programming Functional Description 16 buttons can be configured individually or as a matrix The CY8CMBR2016 CapSense Express capacitive touch Supports 3x4 and 4x4 matrix configurations sensing controller incorporates several innovative features to Matrix Host Interface Communication save time and money to quickly enable a capacitive touch Industry-standard host interface protocols reuse existing sensing user interface in your design. It is a hardware host processor firmware configurable device and does not require any software tools, Key Scan Interface firmware coding or device programming. This device is enabled Truth Table Interface with Cypress s revolutionary SmartSense auto-tuning algorithm. SmartSense auto-tuning ends the need to manually tune the Encoded GPO Interface - minimizes number of pins required user interface during development and production ramp. This SmartSense Auto-Tuning speeds the time to volume and saves valuable engineering time, Maintains optimal button performance even in noisy test time, and production yield loss. environments The device supports up to 16 capacitive touch buttons that can CapSense parameters dynamically set in runtime be organized in any format, such as a matrix array. With its Wide parasitic capacitance (C ) range (540 pF) P backward compatible key scan interface, it can enable users to Saves time and effort in device tuning achieve quick-to-market (retrofit) designs in large keypad applications such as fire alarm control panels, security systems, Noise immunity and door locks. Any application that requires up to 16 CapSense High sensitivity, low-noise capacitive sensing algorithm buttons can utilize CY8CMBR2016. Strong immunity to RF and AC noise The wide operating range of 1.71 V to 5.5 V enables unregulated Low radiated noise emission battery operation, further saving component cost. This device supports ultra low-power consumption in both run mode and System diagnostics of CapSense buttons deep sleep mode to stretch battery life. In addition, this device Reports any faults at device power up also supports many advanced features, which enhance the Button shorts robustness and user interface of the end solution. Some of the Improper value of modulating capacitor (C ) MOD key advanced features include Noise Immunity and FSS. Noise Parasitic capacitance (C ) out of range Immunity improves the immunity of the device against radiated P and conducted noise, such as audio and radio frequency (RF) Advanced features noise. FSS provides robust sensing even with closely spaced Flanking Sensor Suppression (FSS) provides robust sensing buttons. FSS is a critical requirement in small form factor even with closely spaced buttons applications. Buzzer Signal Output The CY8CMBR2016 provides three different host interface Configurable sensitivity for all buttons communication modes. These include the industry standard host Interrupt line to host to indicate any CapSense button status interface protocols such as Key Scan Interface and Truth Table change Interface. These two protocols reuse existing host processor firmware leading to easy conversion of existing mechanical Serial Debug Data out buttons to CapSense. The third host interface communication is Simplifies production line testing and system debug the Encoded GPO Interface with a 4-bit output, which minimizes Wide operating range the number of pins required for a button output. These three outputs are configurable which helps provide a wide variety of 1.715.5 V device usage in multiple applications. Ideal for both regulated and unregulated battery 1 applications Serial Debug Data output gives the critical information about the and raw counts. This further helps in design, such as button C P Low power consumption production line testing. 2 Supply current in run mode as low as 20 A per button Deep sleep current: 100 nA Notes 1. Supply variation should not be more than 5% for proper CapSense operation 2. Power consumption calculated with 250 ms scan time, 2% touch time and C of each button < 19 pF. P Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Document Number: 001-67921 Rev. *G Revised May 22, 2017CY8CMBR2016 Contents Pinout ................................................................................3 Layout Guidelines and Best Practices ......................... 17 Typical Circuits .................................................................4 Sample Layout ................................................................ 19 Configuring the CY8CMBR2016 ......................................8 Electrical Specifications ................................................ 21 Device Features ................................................................8 DC Electrical Characteristics ..................................... 21 CapSense Buttons ......................................................8 AC Electrical Specifications ....................................... 23 SmartSense Auto-Tuning ............................................8 CapSense Specification ............................................ 23 Flanking Sensor Suppression (FSS) ...........................8 Package Information ...................................................... 24 Key Scan Interface ......................................................8 Ordering Information ...................................................... 25 Truth Table Output ....................................................10 Ordering Code Definitions ......................................... 25 Encoded 4-bit Output ................................................10 Appendix .........................................................................26 Buzzer Signal Output ................................................10 Acronyms ........................................................................27 Interrupt Line .............................................................10 Document Conventions ................................................. 27 Button Auto Reset .....................................................10 Units of Measure ....................................................... 27 Output Select .............................................................11 Document History Page ................................................. 28 Scan Rate ..................................................................11 Sales, Solutions, and Legal Information ...................... 29 Sensitivity ..................................................................11 Worldwide Sales and Design Support ....................... 29 System Diagnostics ...................................................11 Products ....................................................................29 Serial Debug Data Out ..............................................13 PSoC Solutions ...................................................... 29 Power Consumption Cypress Developer Community ................................. 29 and Device Operating Modes ...........................................15 Technical Support ..................................................... 29 Response Time .........................................................16 Deep Sleep Mode ......................................................16 Document Number: 001-67921 Rev. *G Page 2 of 29