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ThePIC17C4Xhighendmicrocontrollerfamily,offeredbyMicrochip,hasmanyfeatureswhichmakeitoneofthefastest8-bitmicrocontrollersintheindustry.How-everonefeaturewhichismissingisanon-chipAna-log-to-Digital(A/D)converter.ThisTechnicalBriefdescribeshowtoconnectaPIC16C710toaPIC17C4XthroughasimpleSerialI/O(SIO)3lineinterface.Theresultisaquickmethodbywhichausercangetafast(approx.17kHztransferrate)4-channelA/DconverterTB010AddingaSimple4-channel8-bitA/DtoaPIC17C4XIMPLEMENTATIONAuthor:StanD’SouzaMicrochipTechnologyInc.ThePIC17C4Xisthemasterdeviceinthiscase,oper-atingat16MHz.ThemastergeneratestheCLKpulseandinitiatestheconversion.ThePIC16C710istheINTRODUCTIONslave,operatingat20MHz,andprovidesthe……