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TTP229-BSFTonTouchTM09’/12/22Page1of16Ver:1.116KEYSOR8KEYSTOUCHPADDETECTORICGENERALDESCRIPTIONTheTTP229-BSFTonTouchTMICiscapacitivesensingdesignspecificallyfortouchpadcontrols.Thedevicebuiltinregulatorfortouchsensor.Stablesensingmethodcancoverdiversityconditions.Humaninterfacescontrolpanellinksthroughnon-conductivedielectricmaterial.Themainapplicationisfocusedatreplacingofthemechanicalswitchorbutton.TheASSPcanindependentlyhandlethe8touchpadsorupto16touchpads.FEATURES?Operatingvoltage：2.4V~5.5V?Built-inregulator?Stand-bycurrentAt3V，andsleepmodeslowsamplingrate8Hz：=>Typical2.5uAfor16inputkeys=>Typical2.0uAfor8inputkeys?Providestoset8directkeysor16directkeysbyoption?Providestoset8separateoutputsonlyfor8directinputkeysmode?Hasa2-wiresserialoutputinterface，bothcanusefor8and16directinputkeysmode?8separateoutputscanselectoutputdrivingtypesbyoption(CMOS/OD/OCwithactivehigh/low)?2-wiresserialinterfacecanselectactivehighorlowbyoption?Offermulti-keyorsingle-keyfeaturebyoption?Providestwokindsofsamplingratethatslowsamplingrate8Hzandfastsamplingrate64Hzatsleepmode?Havethemaximumkey-ontimeabout80secbypinoption?Sensitivitycanadjustbythecapacitance(1~50pF)outside?Afterpower-onhaveabout0.5secstable-time，Duringthetimedonottouchthekeypad，andallfunctionsaredisabled?AutocalibrationforenvironmentchangingAndthere-calibrationperiodisabout4.0sec，whenallkeysarenotactivatedforfixedtimeAPPLICATION?Wideconsumerproducts?Buttonkeyreplacement
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