PCB-Design Dipl.-Ing. Robert Burdick The Capture design ...

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PCB-Design Dipl.-Ing. Robert Burdick The Capture design ...

PCB-Design Dipl.-Ing. Robert BurdickBasic schematic design entry steps• Start “Capture CIS Demo” in the Menu “OrCAD Demo”.• Add a new project | PC Board Wizard>Assign a name,choose a directory where it will be stored andadd the library “c:\programme\orcad_demo\capture\library\capsym.olb” in the following windows.Every project should be stored in a separate directory.• Add the library “.\TranAmp.olb”.• Set up the Design Template with for new schematic pages.Register -> fill in the standard information.Register -> select Units Milimeters and New Page Size A4.• Set up project preferences with .Register -> switch off “Auto Reference”-> switch on “Auto Recovery” and“Enable Intertool Communication”.• Set up design preferences with after you select the design folder in the project navigator.Register -> switch on “Display invisible power pins”.• In the project manager select the folder “SCHEMATIC1”.Add a new page with and assign a name.• Change the title in the Title Block with a double-click at the “?”.• Add CIS database components with .Select a component with a double-click at the row in the component-list.2


PCB-Design Dipl.-Ing. Robert Burdick• Alternatively add library components with .First remove all libraries with .Second add the used libraries with .Ex.: “L:\OrCAD\Capture\Library\IEEE_2000\Device.olb”.• Place the part with the left mouse button, for ex. “BC140-16” and “C”.Use the right mouse button drop down menu to rotate or edit the properties.• Search for a Part with , ex. “BC140-16” in library “TRANSISTOR.olb”.• To place global power symbols for GND and VCC use and .• To connect the parts use .• To logically connect open ended nets by net-name use .• Select the design in the project manager and perform a including“Check for unconnected nets”,“Create DRC markers for warnings” and“Check off-page connector connections”.• Assign references to the component with and perform a second DRC.• Select all components with and edit properties with in the Property Editor.• Add the component propertiesPCB Footprint,COMPSIDE (TOP) andCOMPGROUP (standard->0).3


PCB-Design Dipl.-Ing. Robert Burdick• Add the net propertiesCONNWIDTH,MAXWIDTH,MINWIDTH andNETWEIGHT (standard->50).• Create a cross reference list with .• Create a list with the used components with and add a column for the “PCB Footprint” property separatedwith a tabulator.• Generate a netlist for the PCB-Editor with Enable the options “User Properties in inches” and “Run ECO to Layout”.• Archive the Project with in a backup directory.Output file name conventions:*.bom Bill of materials*.drc Design rule check results*.mnl Layout netlist*.xrf Cross reference*.dsn Design database*.opj Project*.olb Schematic Library*.dbk Design backup*.obk Schematic Library backup4


PCB-DesignDipl.-Ing. Robert BurdickHierarchical schematic design techniques• Add a new project with | PC Board Wizard>• Change the title and the document number.• Select the design in the project navigator and add a new schematic folder with .• Open the project RS-FlipFlop and select the schematic RS-FlipFlop. Copy it into the new schematic folder with and .• Delete the unused gates and the connector for the inputs and outputs.• Move the power connector and the bypass capacitor to the top level page.• Add hierarchical ports with . Check for correct type (input or output).• Select the design in the project navigator and add a hierarchical block with .• Add the part CON24A.• Connect the RS FlipFlops via busses with the connector.• See the hierarchy view in the project navigator.• Reset the part references and then annotate the design with .• See the hierarchy view in the project navigator.• Prepare properties for layout with and . Select the nets- and parts-tab.• Generate a layout netlist with . Select the Layout tab and enable “Run ECO to Layout”and “User Properties are in inches”.Create New Library Components• Open a new library with .• Select the library in the project navigator and save it with as SENSOR.OLB.• Add a new part ADXL105 with .• Select it and drag the selection handle to resize the part body border.• Add the pins with .• Place the outline with .1

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