
SMSC -> Microchip
General Description
The CAP1214 is a multiple channel Capacitive Touch sensor and LED Driver.1
The CAP1214 contains up to fourteen (14) individual Capacitive Touch sensor inputs with programmable sensitivity for use in touch button and slider switch applications. Each sensor input contains automatic recalibration with programmable time delays.
The CAP1214 includes compensation circuitry that provides uniform touch sensitivity across a wide range of external sensing pad capacitance.
FEATUREs
◾ Fourteen (14) capacitive touch sensor inputs
— Compensates for variable sensing pads
— Programmable sensitivity
— High SNR allows for easy tuning
— Automatic recalibration
— Slider acceleration and position detection
— Proximity detection
◾ Lid closure detection
◾ Low power operation
— 4.5uA quiescent current in Deep Sleep
— 250uA quiescent current in Sleep, monitoring 1 button
◾ FEEDBACK pin can drive a piezo transducer when a
touch is detected
◾ User controlled reset
◾ Low external component count
◾ SMBus 2.0 compliant interface to change operating
parameters to work in a wide variety of systems
— Block Read and Write function for quick tasking
◾ Eleven (11) LED driver outputs
— Programmable blink, breathe, and dimness controls
— 8 configurable as GPIOs
— LEDs can be linked to capacitive sensor channels
◾ Development boards and software available
◾ Available in 32-pin 5mm x 5mm QFN Lead-free
RoHS Compliant package
APPLICATIONs
◾ Consumer Electronics
◾ Desktop and Notebook PCs
◾ LCD Monitors