CAP1088 Datasheet | SMSC

8 Channel Capacitive Touch Sensor with 8 LED Drivers PRODUCT Features General Description The CAP1088 is a multiple channel Capacitive Touch sensor with multiple power LED drivers. It contains eight (8) individual Capacitive Touch sensor inputs with programmable sensitivity for use in touch sensor applications. Each sensor automatically recalibrates to pensate for gradual environmental changes. The CAP1088 also contains eight (8) LED drivers that offer full-on / off, variable rate blinking, dimness controls, and breathing. Each of the LED drivers may be linked to one of the sensors to be actuated when a touch is detected. As well, each LED driver may be individually controlled via a host controller. The CAP1088 offers multiple power states operating at low quiescent currents. During the Standby mode of operation, one or more Capacitive Touch Sensors are active and all LEDs may be used. If a touch is detected, then it will wake the system using the WAKE/SPI_MOSI pin. The Deep Sleep mode of operation is the lowest power state available drawing 3u A of current. During this mode, no sensors are activethough all LEDs may be u s e d . D r i v i n g t h e WA K E / S P I _ M O S I p i n o r munications will wake the device. - Datasheet Applications - - - - Desktop and Notebook PC’s LCD Monitors Printers Appliances Features - Eight (8) Capacitive Touch Sensor Inputs - Programmable sensitivity - Automatic recalibration - Individual thresholds for each button - - Flexible Capacitive Touch Sense algorithm Multiple munication interfaces - - - - SMBus / I2C pliant interface SMSC BC-Link interface SPI munications Pin selectable munications protocol and multiple slave addresses (SMBus / I2C only) Low Power operation - 3u A quiescent current in Deep Sleep - Samples one or more channels in Standby - Eight (8) LED Driver Outputs - Open Drain or Push-Pull - Programmable blink, breathe, and dimness controls - Can be linked to Capacitive Touch...