Overview
These CapSense Express™ controllers support four to ten capacitive
sensing (CapSense) buttons. The device functionality is configured
through an I2C port and can be stored in onboard nonvolatile memory
for automatic loading at power-on. The CY8C20110 is optimized for
dimming LEDs in 15 selectable duty cycles for back light
applications. The device can be configured to have up to 10 GPIOs
connected to the PWM output. The PWM duty cycle is programmable for
variable LED intensities.
Features
■10/8/6/4 capacitive button input
❐Robust sensing algorithm
❐High sensitivity, low noise
❐Immunity to RF and AC noise
❐Low radiated EMC noise
❐Supports wide range of input capacitance, sensor shapes, and sizes
■Target applications
❐Printers
❐Cellular handsets
❐LCD monitors
❐Portable DVD players
■Low operating current
❐Active current: continuous sensor scan: 1.5 mA
❐Deep sleep current: 4 µA
■Industry's best configurability
❐Custom sensor tuning, one optional capacitor
❐Output supports strong drive for LED
❐Output state can be controlled through I2C or directly from
CapSense® input state
❐Run time reconfigurable over I2C
■Advanced features
❐All GPIOs support LED dimming with configurable delay option in
CY8C20110
❐Interrupt outputs
❐User defined inputs
❐Wake on interrupt input
❐Sleep control pin
❐Nonvolatile storage ofcustom settings
❐Easy integration into existing products – configure output to
match system
❐No external components required
❐World class free configuration tool
■Wide range of operating voltages
❐2.4 V to 2.9 V
❐3.10 V to 3.6 V
❐4.75 V to 5.25 V
■I2C communication
❐Supported from 1.8 V
❐Internal pull-up resistor support option
❐Data rate up to 400 kbps
❐Configurable I2C addressing
■Industrial temperature range: –40 °C to +85 °C.
■Available in 16-pin QFN, 8-pin, and 16-pin SOIC packages
