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CAP1214-1-EZK-TR Datasheet(PDF) 1 Page - Microchip Technology |
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CAP1214-1-EZK-TR Datasheet(HTML) 1 Page - Microchip Technology |
1 / 107 page SMSC CAP1214 DATASHEET Revision 1.0 (08-30-10) Datasheet PRODUCT FEATURES CAP1214 Multiple Channel Capacitive Touch Sensor and LED Driver 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. The CAP1214 also contains eleven (11) low side LED drivers that offer full-on / off, variable rate blinking, dimness controls, and breathing. LED outputs can be linked to capacitive sensor channels. Applications Consumer Electronics Desktop and Notebook PCs LCD Monitors 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 Block Diagram 1. SMSC and the SMSC logo are registered trademarks and SMSC RightTouch is a trademark of Standard Microsystems Corporation ("SMSC"). SMBus Slave Protocol SMCLK SMDATA VDD GND ALERT Capacitive Sensing Algorithm LED Blink, Breathe, and Dimness control LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED8 LED9 LED10 LED11 CS1 CS2 CS3 CS4 CS5 CS6 CS7 CS8 CS9 CS10 CS11 CS12 CS13 CS14 RESET FEEDBACK |
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