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CY8CMBR2110 Datasheet(PDF) 7 Page - Cypress Semiconductor |
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CY8CMBR2110 Datasheet(HTML) 7 Page - Cypress Semiconductor |
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7 / 71 page  CY8CMBR2110 Document Number: 001-74494 Rev. *B Page 7 of 71 Device Features CapSense Buttons ■ Supports up to 10 CapSense buttons ■ Ground the CSx pin to disable CapSense button input ■ Connect a 2.2-nF (±10%) capacitor on the CMOD pin for proper CapSense operation ■ For proper CapSense operation, ensure CP of each button is less than 40 pF SmartSense Auto-Tuning ■ Supports auto-tuning of CapSense parameters ■ Does not require manual tuning; all parameters are automati- cally tuned by the device ■ Reduces the design cycle time ❐ No manual tuning ■ Ensures portability of the user interface design ■ Compensates printed circuit board (PCB) variations, device process variations, and PCB vendor changes General Purpose Outputs (GPOs) ■ GPOx pin outputs are strong drive[3] ■ The GPOx is controlled by the corresponding CSx ■ Active low output – supports sinking configuration for LEDs (see Figure 3) ■ If CSx is disabled (grounded), then the corresponding GPOx must be left floating ■ After power-up on the GPOx, a 5-ms pulse is sent after 350 ms (if Noise Immunity level is “Normal”) and 1000 ms (if Noise Immunity level is “High”), if the CSx fails the System Diagnostics Figure 3. Example of GPO0 Driven by CS0 CS0 GPO0 Button Touched Button Released Table 2. CY8CMBR2110 Advanced Features Feature Benefits Toggle ON/OFF Button retains state after touch (ON/OFF) Flanking Sensor Suppression (FSS) Avoids multiple button trigger in a design with closely-spaced buttons Noise Immunity Improves device immunity to external noise (such as RF noise) Automatic Threshold Configurable finger threshold for different noise settings LED ON Time Gives an LED effect on button release Button Auto Reset Disables false output trigger when the conducting object is placed close to the button Power-on LED Effects and Button Touch LED Effects Provides visual effects to design at power-on and button touch Standby Mode LED Brightness Used for LED backlighting Latch Status Read No button touch missed by host processor Attention/Sleep Line to Host Provides device interrupt to host. Host can use this to read data from the device. Also controls device operating mode. Analog Voltage Support External resistors can be used with GPOs to generate analog voltage output Sensitivity Control Maintains optimal button performance for different overlay and noise conditions Debounce Control Prevents false trigger of buttons Buzzer Signal Output Provides audio feedback on button touch Host Controlled GPOs GPO pins, which can be controlled by the host processor through I2C System Diagnostics Supports production testing and debugging Low-Power Sleep Mode and Deep Sleep Mode Low power consumption Note 3. When a pin is in strong drive mode, it is pulled up to VDD when the output is HIGH and pulled down to Ground when the output is LOW. |
Similar Part No. - CY8CMBR2110_13 |
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Similar Description - CY8CMBR2110_13 |
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