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1、OrCADFlowTutorial,ProductVersion16.02CreatingaschematicdesignThischapterconsistsofthefollowingsections:ObjectiveDesignexampleCreatingadesigninCaptureProcessingadesignSummaryWhat'snextRecommendedreadingObjectiveTocreateaschematicdesigninOrCADCapture.Inthischapter,youwillbeintro
2、ducedtobasicdesignsteps,suchasplacingapart,connectingpartsusingwires,addingports,generatingparts,andsoon.ThestepsforpreparingyourdesignforsimulationusingPSpiceandfortakingyourdesignforplacementandroutingtoOrCADLayoutorOrCADPCBEditorarealsocoveredinthischapter.DesignexampleInth
3、ischapter,youwillcreateafulladderdesigninOrCADCapture.Thefulladderdesigncoveredinthistutorialisacomplexhierarchicaldesignthathastwohierarchicalblocksreferring1tothesamehalfadderdesign.Duration:40minutesCreatingadesigninCaptureGuidelinesWhencreatinganewcircuitdesigninOrCADCaptu
4、re,itisrecommendedthatyoufollowtheguidelineslistedbelow.1.Avoidspacesinpathnamesandfilenames.Thisisnecessarytogetyourdesignintodownstreamproducts,suchasSPECCTRAforOrCAD.2.Avoidusingspecialcharactersfornamingnets,nodes,projects,orlibraries.Whilenamingnets,useofillegalcharacters
5、listedbelowmightcausethenetlistertofail.?(questionmark)@(atsymbol)~(telda)#(hash)&(ampersand)%(percentsign)"(quotationmarks)!(exclamationmark)()(parenthesis)<(smallerthan)=(equal)>(greaterthan)[](squareparenthesis),*(asterisk)2CreatingaprojectTocreateanewproject,wewilluseCaptu
6、re'sProjectWizard.TheProjectWizardprovidesyouwiththeframeworkforcreatinganykindofproject.1.LaunchCapture.2.FromtheFilemenu,chooseNew>Project.3.IntheNewProjectdialogbox,specifytheprojectnameasFullAdd.4.Tospecifytheprojecttype,selectAnalogorMixedA/D.Note:AnAnalogorMixedA/Dprojec
7、tcaneasilybesimulatedusingPSpice.ItalsoensuresthatyourdesignflowssmoothlyintoOrCADLayoutforyourboarddesign.5.SpecifythelocationwhereyouwanttheprojectfilestobecreatedandclickOK.6.IntheCreatePSpiceProjectdialogbox,selecttheCreateablankprojectoptionbutton.Note:Whenyoucreateablank
8、project,theprojectcanbesimulatedinPSpice,butlibrariesarenotco