TheMCP41XXXandMCP42XXXfamilyofdigital
potentiometerscommunicateusingastandard3-wire
SPI™compatibleinterface.Thisapplicationnotewill
covercommunicationbetweenthesedevicesandthe
Motorola68HC12familyofmicrocontrollers.Specifi-
cally,theMC68HC912B32evaluationboardwasused.MAN757InterfacingMicrochip’sMCP41XXXandMCP42XXXDigitalPotentiometerstoMotorola’s68HC12MicrocontrollerMCP41XXXandMCP42XXXpotentiometersare8-bitAuthor:EzanaHaileor256tappotentiometers.All8bitsinthedatabyteareMicrochipTechnology,Inc.wiperdatabits.Therearefourimportantbitsinthecommandbyte.Bits
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