摘要：DS1868采用3线接口（移位寄存器）双数字电位器。本应用笔记介绍了所需的接口DS1868的逻辑和固件，以及任何其他DallasSemiconductor的3线设备，摩托罗拉SPI总线。
Maxim>AppNotes>DIGITALPOTENTIOMETERSGENERALENGINEERINGTOPICSINTERFACECIRCUITSKeywords:3-wireinterface,SPIto3-wire,SPIbus,digitalpotentiometers,digitalpots,SPIinterface,shiftregisterDec26,2001APPLICATIONNOTE169InterfacingaDS18683-WireDevicetoaSPIBusAbstract:TheDS1868usesadualdigitalpotentiometerwitha3-wire(shiftregister)interface.ThisapplicationnotedescribesthelogicandfirmwarerequiredtointerfacetheDS1868,aswellasanyotherDallasSemiconductor3-wiredevicestotheMotorolaSPIbus.IntroductiontoDS1868TheDS1868isadualdigitalpotentiometerwitha3-wireinterface.ThisapplicationnotewilldescribehowtointerfaceaDallasSemiconductor3-wiredevicetoamicrocontroll
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