iqs316_datasheet

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1、IQS316Datasheet®TMIQSwitch-ProxSenseSeriesMulti-channelCapacitiveSensingControllerwithAdvancedSignalProcessingFunctionsTheIQS316isa20channelsurfacecapacitivetouchandproximitycontrollerwithadvancedon-chipsignalprocessingfeatures,includingAntennaTuningImplementation(ATI).Proximi

2、tydetectioncanbedistributedoverallkeys,oronlyselectedkeys,providinghighflexibilityforstableoperationinvaryingdesigns.Thecontrollerisbasedonpatentedcapacitivesensingtechnologythatyieldsstabilitywithhighsensitivityandexcellentnoiseimmunity.Thiscontrollercanoperatewithasmallnumbe

3、rofexternalcomponentstoprovidealowcostsolutionformediumtohighchannelcountapplications.MainFeatures16TouchKeyswithdistributedProximitySensingInternalCapacitorImplementation(ICI).NoexternalreferencecapacitorsrequiredClassleadingproximitysensitivitywithdedicatedProxModechargin

4、gschemeUserselectablegainthroughAntennaTuningImplementation(ATI)AllchannelsindividuallyconfigurableformaximumdesignflexibilityAdvancedon-chipsignalprocessing2UserselectableICandSPIcommunicationHighsensitivityInternalvoltageregulatorSupplyvoltage2.85V-5.5VLowpowermodes(

5、45uA)ActiveshieldoptionsRFdetectionAvailableinQFN(5x5)-32package8GeneralPurposeI/O‟sApplicationsOfficemachinesConsumerElectronicsDigitalcamerasWhitegoodsandappliancesKeypadsKioskandPOSTerminalsHigh-endkitchenappliancesLaunchamenuonuserapproachingPersonalMediaPlaye

6、rsAvailableoptionsTAQFN32-40°Cto85°CIQS316®IQSwitch™ProxSenseSeries5.2.3CxSensorsUsedForProx...........................125.2.4CxSensorsplusI/O’s..................................12Contents5.2.5UnusedCx’s................................................12IQS316Datasheet.........

7、..................................................16Communication....................................................126.1CommunicationSelection...............................121Overview................................................................36.2WatchdogTimeoutandMCLR.

8、......................122PackagingandPin-out.................