标签: tc7135

Manydataacquisitionsystemsrequirebothavisualdisplayandacomputerinterface.TheTC7135fromMicrochipTechnologyisa4-1/2digitAnalog-to-Digitalconverter(ADC)whichcaneasilyprovidebothofthesefunctions.TheTC7135’smultiplexedBCDoutputsinterfaceeasilytolowcostLEDorLCDdecoder/drivers,suchastheTC7211A.Also,theTC7135’sdataoutputssimplifycomputerinterfacing.ThisapplicationnotewillpresentboththehardwareandsoftwarerequiredtointerfacetheTC7135toamicroprocessor.Thecircuitwasdevelopedfora6502µPand6522I/Oport,butthedesigncaneasilybemodifiedforotherµPsandI/Oports.AN16TC7135MicroprocessorInterfaceLowRoll-OverError......................................±1countAuthor:WesFreeman,MicrochipTechnology,Inc.ValidPolarityat000reading(the+and……