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CAP1203 Datasheet(PDF) 1 Page - Microchip Technology |
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CAP1203 Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 59 page  2013-2015 Microchip Technology Inc. DS00001572B-page 1 General Description The CAP1203 is a multiple channel capacitive touch sensor controller. It contains individual capacitive touch sensor inputs with programmable sensitivity for use in touch sensor applications. Each sensor input is cali- brated to compensate for system parasitic capacitance and automatically recalibrated to compensate for grad- ual environmental changes. The CAP1203 includes Multiple Pattern Touch recogni- tion that allows the user to select a specific set of but- tons to be touched simultaneously. If this pattern is detected, a status bit is set and an interrupt is gener- ated. The CAP1203 has Active and Standby states, each with its own sensor input configuration controls. Power consumption in the Standby state is dependent on the number of sensor inputs enabled as well as averaging, sampling time, and cycle time. Deep Sleep is the low- est power state available, drawing 5µA (typical) of cur- rent. In this state, no sensor inputs are active, and communications will wake the device. Applications • Desktop and Notebook PCs • LCD Monitors • Consumer Electronics • Appliances Features • Three (3) Capacitive Touch Sensor Inputs - Programmable sensitivity - Automatic recalibration - Calibrates for parasitic capacitance - Individual thresholds for each button • Multiple Button Pattern Detection • Power Button Support • Press and Hold Feature for Volume-like Applica- tions • 3.3V or 5V Supply • Analog Filtering for System Noise Sources • RF Detection and Avoidance Filters • Digital EMI Blocker • 8kV ESD Rating on All Pins (HBM) • Low Power Operation - 5µA quiescent current in Deep Sleep - 50µA quiescent current in Standby (1 sensor input monitored) - Samples one or more channels in Standby • SMBus / I2C Compliant Communication Interface • Available in an 8-pin 2mm x 3mm TDFN RoHS compliant package • Available in an 8-pin SOIC RoHS compliant pack- age CAP1203 3-Channel Capacitive Touch Sensor |
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