Interfacing SPI Peripherals to the MAX7651 Processor

Abstract:ThisarticleexplainshowtointerfaceaGPIOporttoanSPIperipheral.ItdefinesthebasicsoftheSPIprotocol,thesignalsandthefourtransfervariationsfortheSCKsignal.AsoftwareroutineisincludedtoimplementtheSPIinterfaceusingtheMAX7651,aflashprogrammable12-bitintegrateddata-acquisitionsystem.Maxim>AppNotes>A/DandD/ACONVERSION/SAMPLINGCIRCUITSINTERFACECIRCUITSKeywords:SPI,SPIinterface,SCK,MOSI,MISO,CS,I/Oports,bitbanging,SPIperipheral.Sep17,2001APPLICATIONNOTE802InterfacingSPIPeripheralstotheMAX7651ProcessorAbstract:ThisarticleexplainshowtointerfaceaGPIOporttoanSPIperipheral.ItdefinesthebasicsoftheSPIprotocol,thesignalsandthefourtransfervariationsfortheSCKsignal.AsoftwareroutineisincludedtoimplementtheSPIinterfaceusingtheMAX7651,aflashprogrammable12-bitintegrateddata-acquisitionsystem.IntroductionTheSPIbusisa4-wireserialcommunicationsinterfaceusedbymanymicroprocessorperipheralchips.TheMAX7651microprocessordoesnotincludededicatedhardware