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CAP1188 Dataheets PDF



Part Number CAP1188
Manufacturers SMSC Corporation
Logo SMSC Corporation
Description 8 Channel Capacitive Touch Sensor
Datasheet CAP1188 DatasheetCAP1188 Datasheet (PDF)

CAP1188 8 Channel Capacitive Touch Sensor with 8 LED Drivers PRODUCT FEATURES Datasheet General Description The CAP1188, which incorporates SMSC’s RightTouch® 1 technology, 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 input automatically recalibrates to compensate for gradual environmental changes. The CAP1188 also co.

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CAP1188 8 Channel Capacitive Touch Sensor with 8 LED Drivers PRODUCT FEATURES Datasheet General Description The CAP1188, which incorporates SMSC’s RightTouch® 1 technology, 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 input automatically recalibrates to compensate for gradual environmental changes. The CAP1188 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 sensor inputs to be actuated when a touch is detected. As well, each LED driver may be individually controlled via a host controller. The CAP1188 includes Multiple Pattern Touch recognition that allows the user to select a specific set of buttons to be touched simultaneously. If this pattern is detected, then a status bit is set and an interrupt generated. Additionally, the CAP1188 includes circuitry and support for enhanced sensor proximity detection. The CAP1188 offers multiple power states operating at low quiescent currents. In the Standby state of operation, one or more capacitive touch sensor inputs are active and all LEDs may be used. If a touch is detected, it will wake the system using the WAKE/SPI_MOSI pin. Deep Sleep is the lowest power state available, drawing 5uA (typical) of current. In this state, no sensor inputs are active. Driving the WAKE/SPI_MOSI pin or communications will wake the device. 1. SMSC, the SMSC logo and RightTouch are registered trademarks and the RightTouch logo is a trademark of Standard Microsystems Corporation (“SMSC”). Applications „ Desktop and Notebook PCs „ LCD Monitors „ Consumer Electronics „ Appliances Features „ Eight (8) Capacitive Touch Sensor Inputs — Programmable sensitivity — Automatic recalibration — Individual thresholds for each button „ Proximity Detection „ Multiple Button Pattern Detection „ Calibrates for Parasitic Capacitance „ Analog Filtering for System Noise Sources „ Press and Hold feature for Volume-like Applications „ Multiple Communication Interfaces — SMBus / I2C compliant interface — SMSC BC-Link interface — SPI communications — Pin selectable communications protocol and multiple slave addresses (SMBus / I2C only) „ Low Power Operation — 5uA quiescent current in Deep Sleep — 50uA quiescent current in Standby (1 sensor input monitored) — 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 Sensor inputs „ Dedicated Wake output flags touches in low power state „ System RESET pin „ Available in 24-pin 4mm x 4mm RoHS compliant QFN package Block Diagram LED1 LED2 LED3 LED4 RESET VDD GND WAKE / SPI_MOSI SPI_CS# LED Driver, Breathe, and Dimness control Capacitive Touch Sensing Algorithm SMBus / BC-Link or SPI Slave Protocol SMCLK / BC_CLK / SPI_CLK SMDATA / BC_DATA / SPI_MSIO / SPI_MISO ALERT# / BC_IRQ# ADDR_COMM LED5 LED6 LED7 LED8 CS1 CS2 CS3 CS4 CS5 CS6 CS7 CS8 SMSC CAP1188 DATASHEET Revision 1.32 (01-05-12) 8 Channel Capacitive Touch Sensor with 8 LED Drivers Datasheet Ordering Information: ORDERING NUMBER CAP1188-1-CP-TR PACKAGE 24-pin QFN 4mm x 4mm (Lead-free RoHS compliant) FEATURES Eight capacitive touch sensor inputs, Eight LED drivers, Dedicated Wake, Reset, SMBus / BC-Link / SPI interfaces Reel size is 4,000 pieces This product meets the halogen maximum concentration values per IEC61249-2-21 For RoHS compliance and environmental information, please visit www.smsc.com/rohs Please contact your SMSC sales representative for additional documentation related to this product such as application notes, anomaly sheets, and design guidelines. Copyright © 2012 SMSC or its subsidiaries. All rights reserved. Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office to obtain the latest specifications before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor devices any licenses under any patent rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC's standard Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors known as anomali.


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