User Manual (EVBCRTOUCH)Table of ContentsIntroduction1Port Settings Tab1Resistive Configuration and Capacitive Configuration Tabs2Calibration Tab5Gestures Tab8Mouse Emulation Tab9System Requirements11References11Revision History11Size: 613 KBPages: 12Language: EnglishOpen manual
Data Sheet (EVBCRTOUCH)Table of Contents1 Pins and Connections31.1 Device block diagram31.2 Device pin out41.3 Recommended system connections51.4 Signals description62 Functional Description72.1 CRTouch resistive touchscreen scanning72.1.1 Touchscreen electrical signals72.1.2 CRTouch scanning process82.1.3 Resistive events102.1.4 Calibration process102.1.5 Data FIFO142.1.6 Resistive gestures152.1.6.1 Slide152.1.6.2 Two touch gestures162.1.6.3 Zoom gesture162.1.6.4 Rotate gesture172.2 Capacitive subsystem172.2.1 Capacitive touch detection172.2.2 Keypad control182.2.3 Rotary and slider control182.3 Modes of operation192.3.1 Run mode192.3.2 Sleep mode192.3.2.1 CRTouch function in sleep mode192.3.2.2 I2C communication in sleep mode192.3.2.3 UART communication in sleep mode202.3.3 Shutdown mode202.4 Internal voltage regulator212.4.1 Internal voltage regulator features212.4.2 Internal voltage regulator modes of operation213 Serial Communications223.1 I2C interface223.1.1 I2C bit transfer233.1.2 I2C START and STOP conditions233.1.3 I2C transferring data243.1.4 I2C acknowledge243.1.5 CRTouch I2C slave address243.1.6 Message format for Writing CRTouch253.2 UART253.2.1 UART Baudrate auto detection253.2.2 UART communication protocol263.2.3 Registers Read through UART263.2.4 Registers Write through UART274 Memory Map and Registers Description284.1 Device memory map284.2 Registers description344.2.1 Resistive Touch Status registers344.2.1.1 Resistive Touch Error Register344.2.1.2 Resistive Touch Status register 1364.2.1.3 Resistive Touch Status Register 2374.2.1.4 X coordinate374.2.1.5 Y coordinate384.2.1.6 Pressure value384.2.1.7 Resistive Touch FIFO status384.2.1.8 FIFO X coordinate394.2.1.9 FIFO Y coordinate394.2.1.10 FIFO Pressure Value394.2.1.11 UART baudrate MSB (read only)404.2.1.12 Device identifier register (read only)404.2.1.13 Slide displacement404.2.1.14 Rotate angle414.2.1.15 Zoom size (read only)414.2.2 Capacitive Touch Sensing Status registers414.2.2.1 Capacitive Electrodes Status register414.2.2.2 Capacitive Touch Faults register424.2.2.3 Electrodes Baselines registers424.2.2.4 Electrodes instant Delta registers424.2.2.5 Slider and rotary dynamic status434.2.2.6 Slider and rotary static status434.2.2.7 Capacitive electrodes FIFO (read only)444.2.3 Resistive Touch Configuration registers444.2.3.1 Resistive and Capacitive Touch Configuration register444.2.3.2 Resistive and Capacitive Triggers register454.2.3.3 FIFO Setup register464.2.3.4 Resistive touch sampling rate474.2.3.5 X coordinate stabilization time474.2.3.6 Y coordinate stabilization time484.2.3.7 Z coordinate stabilization time484.2.3.8 Display horizontal resolution484.2.3.9 Display vertical resolution494.2.3.10 Resistive touch slide steps494.2.4 Calibration Values registers504.2.4.1 X calibration values504.2.4.2 Y calibration values504.2.4.3 X and Y two touch constant values514.2.5 TSS Configuration registers514.2.5.1 Capacitive system configuration514.2.5.2 DC Tracker Rate524.2.5.3 Response Time register524.2.5.4 Stuck Key Timeout register524.2.5.5 Electrodes Sensitivity534.2.5.6 Electrodes enablers534.2.5.7 Low Power Scan Period register534.2.5.8 Low Power Electrodes register544.2.5.9 Low Power Electrode Sensitivity register544.2.5.10 Capacitive Resolution register554.2.5.11 Capacitive Events register554.2.5.12 Auto repeat rate register574.2.5.13 Auto repeat rate start register584.2.5.14 Max Touches register58Appendix A Electrical Specifications59A.1 Voltage and current operating requirements59A.2 UART timing specifications60A.3 ESD handling ratings60A.4 I2C timing specifications60A.5 Capacitive electrodes specifications60A.6 Current ratings61A.7 Operating mode transition timing specification61A.8 Resistive screen scan times specifications61A.9 NVM reliability specifications62Appendix B Packing Information63CRTouch Data Sheet1Size: 745 KBPages: 68Language: EnglishOpen manual
