TC7135微处理器接口
Manydataacquisitionsystemsrequirebothavisualdisplayanda
computerinterface.TheTC7135fromMicrochipTechnologyisa
4-1/2digitAnalog-to-Digitalconverter(ADC)whichcaneasily
providebothofthesefunctions.TheTC7135’smultiplexedBCD
outputsinterfaceeasilytolowcostLEDorLCDdecoder/drivers,
suchastheTC7211A.Also,theTC7135’sdataoutputssimplify
computerinterfacing.
Thisapplicationnotewillpresentboththehardwareandsoftware
requiredtointerfacetheTC7135toamicroprocessor.Thecircuit
wasdevelopedfora6502µPand6522I/Oport,butthedesigncan
easilybemodifiedforotherµPsandI/Oports.AN16TC7135MicroprocessorInterfaceLowRoll-OverError......................................±1countAuthor:WesFreeman,MicrochipTechnology,Inc.ValidPolarityat000reading(the+and
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