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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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CAP1028 bảng dữ liệu(PDF) 1 Page - SMSC Corporation |
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CAP1028 bảng dữ liệu(HTML) 1 Page - SMSC Corporation |
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1 / 71 page  SMSC CAP1028 DATASHEET Revision 1.1 (08-05-09) Datasheet PRODUCT FEATURES CAP1028 8 Channel Capacitive Touch Sensor with 2 LED Drivers General Description The CAP1028 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 compensate for gradual environmental changes. The CAP1028 also contains two (2) 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 CAP1028 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 3uA of current. During this mode, no sensors are activethough all LEDs may be use d . Drivin g the WAKE/SPI_MOSI pin or communications will wake the device. 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 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 — 3uA quiescent current in Deep Sleep — Samples one or more channels in Standby Two (2) LED Driver Outputs — Open Drain or Push-Pull — Programmable blink, breathe, and dimness controls — Can be linked to Capacitive Touch Sensors Dedicated Wake output flags touches in low power mode System RESET pin Available in 20-pin 4mm x 4mm RoHS compliant QFN package Block Diagram Note: I2C is a trademark of NXP semiconductor. BC-Link is a trademark of SMSC. SMBus / BC- Link / SPI Slave Protocol SMCLK/ BC_CLK / SPI_CLK SMDATA / BC_DATA/ SPI_MSIO / SPI_MISO VDD GND ALERT# / BC_IRQ# Capacitive Sensing Algorithm LED1 CS1 CS2 CS3 CS4 CS5 CS6 LED Driver, Breathe, and Dimness control WAKE / SPI_MOSI CS7 CS8 RESET ADDR_COMM SPI_CS# LED2 |
Số phần tương tự - CAP1028 |
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Mô tả tương tự - CAP1028 |
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