标签: mcp6s2x

ThischaptercontainsgeneralinformationthatwillbeusefultoknowbeforeusingtheMCP6S2XEvaluationBoard(Rev.4).Itemsdiscussedinthischapterinclude:•AboutThisGuide•WarrantyRegistration•RecommendedReading•Troubleshooting•TheMicrochipWebSite•DevelopmentSystemsCustomerChangeNotificationService•CustomerSupportMCP6S2XEvaluationBoard(Rev.4)User’sGuide2004MicrochipTechnologyInc.DS51327BNotethefollowingdetailsofthecodeprotectionfeatureonMicrochipdevices:MicrochipproductsmeetthespecificationcontainedintheirparticularMicrochipDataSheet.Microchipbelievesthatitsfamilyofproductsisoneofthemostsecurefamiliesofitskindonthemarkettoday,whenusedintheintendedmannerandundernormalconditions.Therearedishonestandpossiblyillegalmethodsusedtobreachthecodeprotectionfeature.Allofthesemethods,toourknowledge,requireusingtheMicrochipproductsinamanneroutsidetheoperatingspecificationscontainedinMicrochip’sDataSheets.Mostlikely,thepersondoingsoisengagedi……

ResistivesensorsconfiguredasWheatstonebridgesareprimarilyusedtosensepressure,temperatureorloads.AnexternalA/Dconverter(ADC)andadigitallyProgrammableGainAmplifier(PGA)caneasilybeusedtoconvertthedifferencevoltagefromtheseresistorbridgesensorstousabledigitalwordsformanipulationbythemicrocontroller.WhenthePGAisusedinthissystem,theotherchannelsoftheMCP6S2XcanbeusedforothersensorswithoutanincreaseinsignalconditioninghardwareorPICmicro®microcontrollerI/Opinconsumption.Themultiplexerandhigh-speedcon-versionresponseofthePGA/Analog-to-Digital(A/D)conversionallowsadifferentialinputsignaltobesam-pledandconvertedintheanalogdomainandthensubtractedinthedigitaldomainwiththemicrocontroller.MAN251BridgeSensingwiththeMCP6S2XPGAsAuthor:BonnieC.BakerBRIDGEDATAACQUISITIONMicrochipTechnologyInc.SYSTEMAnapplicationcircuitforthistypeofsensorenvironmentINTRODUCTIONisshowninFigure1.ResistivesensorsconfiguredasWheatstonebridgesInthiscircuit,thebridgeisexcitedbyavoltagesourceareprimarilyusedtosensepressure,temperatureor(VSEN).Thisreference……

TheMCP6S21/2/6/8familyofone,two,sixoreightchannelProgrammableGainAmplifiers(PGA)commu-nicateusingastandard3-wireSerialPeripheralInter-face(SPI™)protocol.ThisapplicationnoteshowshowtoprogramthesixchannelMCP6S26PGAgains,channelsandshutdownregistersusingthePIC16C505microcontroller.ThePIC16C505microcontrollerdoesnothaveahard-wareSPImodule,therefore,afirmwareSPI(BitBang)methodisusedtoprogramthePGA.TheMCP6S2XEvaluationBoardwasusedtodevelopthisapplicationnotefirmware.Foradditionalinformation,refertotheMCP6S2XEvaluationBoardUser’sGuide(DS51327),MCP6S21/2/6/8PGAdatasheet(DS21117)andPIC16C505datasheet(DS40192).MAN248InterfacingMCP6S2XPGAstoPICmicroMicrocontrollerAuthor:EzanaHaileCOMMUNICATIONMicrochipTechnologyInc.Figure1showstheSPIcommunicationformatwiththeclockidlelowandtheserialdatalatchedattherisingINTRODUCTIONedgeoftheclock.Thisformatissometimesreferredtoas“0,0”mode.InstructionsfortheMCP6S21/2/6/8TheMCP6S21/2/6/8familyofone,two,sixoreight……