User manual CADENCE DESIGN SYSTEMS PSPICE SCHEMATIC

PSpice Schematics Schematic Capture Software User's Guide Copyright © 1985-2000 Cadence Design Systems, Inc. All rights reserved. Trademarks Allegro, Ambit, BuildGates, Cadence, Cadence logo, Concept, Diva, Dracula, Gate Ensemble, NC Verilog, OpenBook online documentation library, Orcad, Orcad Capture, PSpice, SourceLink online customer support, SPECCTRA, Spectre, Vampire, Verifault-XL, Verilog, Verilog-XL, and Virtuoso are registered trademarks of Cadence Design Systems, Inc. Affirma, Assura, Cierto, Envisia, Mercury Plus, Quickturn, Radium, Silicon Ensemble, and SPECCTRAQuest are trademarks of Cadence Design Systems, Inc. Alanza is a service mark of Cadence Design Systems, Inc. All other brand and product names mentioned herein are used for identification purposes only and are registered trademarks, trademarks, or service marks of their respective holders. First online edition 30 November 1999 Second online edition 31 May 2000 Cadence PCB Systems Division (PSD) offices PSD main office (Portland) (503) 671-9500 PSD Irvine office (949) 788-6080 PSD Japan office 81-45-682-5770 PSD UK office 44-1256-381-400 PSD customer support PSD web site PSD customer support web page PSD customer support email form (877) 237-4911 www.orcad.com www.orcad.com/technical/technical.asp www.orcad.com/technical/email_support.asp Cadence PCB Systems Division 13221 SW 68th Parkway, Suite 200 Portland, OR 97223 Contents Before you begin xv . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv . xvii . xvii xviii Welcome . . . . . . . . . . . . How to use this guide . . . . . Symbols and conventions Related documentation . . Chapter 1 Getting Started 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 4 6 6 7 8 11 12 14 15 16 17 18 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . Using PSpice Schematics . . . . . . . . . . . . . . . . . Example--Drawing a Schematic . . . . . . . . . . . . . Starting a New Design . . . . . . . . . . . . . . . . Command Line Options . . . . . . . . . . . . . . . Checking Symbol Libraries Configuration . . . . . Selecting and Placing Parts . . . . . . . . . . . . . . Drawing and Labeling Wires . . . . . . . . . . . . Drawing and Labeling Buses . . . . . . . . . . . . . Changing Reference Designators and Part Values . Moving Parts, Wires, and Text . . . . . . . . . . . . Placing Ports . . . . . . . . . . . . . . . . . . . . . . Placing Power and Ground Symbols . . . . . . . . Saving Your Work . . . . . . . . . . . . . . . . . . . Chapter 2 Using Design Manager 19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 20 22 23 25 25 25 Overview . . . . . . . . . . . . . . . . . Understanding Design Manager . . . . Managing Your Files in the Workspace Design Manager Functions . . . . . . . Starting the Design Manager . . . . . . Hints and Tips . . . . . . . . . . . . . . Design Manager Help . . . . . . . . . . Contents Chapter 3 Using the Schematic Editor 27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 29 29 30 30 30 30 31 32 32 33 39 39 39 41 42 49 50 55 58 60 62 63 64 67 68 68 69 70 70 73 74 74 74 76 76 Overview . . . . . . . . . . . . . . . . . . . . . Components of a Design . . . . . . . . . . . . . Parts . . . . . . . . . . . . . . . . . . . . . . Symbols . . . . . . . . . . . . . . . . . . . . Ports . . . . . . . . . . . . . . . . . . . . . . Attributes . . . . . . . . . . . . . . . . . . . Annotations . . . . . . . . . . . . . . . . . . Connections . . . . . . . . . . . . . . . . . . Main Window . . . . . . . . . . . . . . . . . . Menus . . . . . . . . . . . . . . . . . . . . . Toolbars . . . . . . . . . . . . . . . . . . . Status Bar . . . . . . . . . . . . . . . . . . . Refreshing the Screen . . . . . . . . . . . . Keyboard . . . . . . . . . . . . . . . . . . . Configuring PSpice Schematics . . . . . . . . . Configuring Symbol Libraries . . . . . . . Changing Page Size . . . . . . . . . . . . . Changing Page Settings . . . . . . . . . . . Changing Grid and Gravity . . . . . . . . . Setting the Autosave Interval . . . . . . . . Controlling the Display in PSpice Schematics . Changing Fonts . . . . . . . . . . . . . . . Configuring Colors . . . . . . . . . . . . . Changing Application Settings . . . . . . . Changing the Get Recent Part List Size . . Zooming and Panning in PSpice Schematics . Zooming . . . . . . . . . . . . . . . . . . . Setting Zoom Parameters . . . . . . . . . . Fitting to a Page . . . . . . . . . . . . . . . Panning . . . . . . . . . . . . . . . . . . . . Using the Message Viewer . . . . . . . . . . . Online Help . . . . . . . . . . . . . . . . . . Locating the Source of a Message . . . . . Indicated Severity . . . . . . . . . . . . . . Additional Information . . . . . . . . . . . Closing the Message Viewer . . . . . . . . Chapter 4 Creating and Editing Designs 77 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 Starting the Schematic Editor . . . . . . . . . . . . . . . . . . . . . . . . . 79 iv Contents Opening a File . . . . . . . . . . . . . . . . . . . . Finding Parts . . . . . . . . . . . . . . . . . . . . . . . Getting Parts by Name . . . . . . . . . . . . . . . Searching for Parts in the Libraries . . . . . . . . Placing and Editing Parts . . . . . . . . . . . . . . . . Rotating and Flipping Parts . . . . . . . . . . . . Editing Part Attributes . . . . . . . . . . . . . . . Global Editing of Attributes . . . . . . . . . . . . Editing the Default Attributes of a Symbol . . . . Repeating Part Placements . . . . . . . . . . . . . Automatically Assigning Reference Designators Example--Using Auto-Repeat and Auto Naming Replacing Parts . . . . . . . . . . . . . . . . . . . Placing Power and Ground Symbols . . . . . . . . . Placing Power and Ground Symbols . . . . . . . Creating Custom Power and Ground Symbols . Using Wires and Buses . . . . . . . . . . . . . . . . . Drawing and Labeling Wires . . . . . . . . . . . Drawing and Labeling Buses . . . . . . . . . . . . Automatically Labeling Wires and Buses . . . . . Specifying Drawing Options . . . . . . . . . . . . Using Ports . . . . . . . . . . . . . . . . . . . . . . . . Selecting and Moving Objects and Attributes . . . . Selecting . . . . . . . . . . . . . . . . . . . . . . . Moving . . . . . . . . . . . . . . . . . . . . . . . . Searching for and Selecting Parts . . . . . . . . . Cutting, Copying, and Pasting . . . . . . . . . . . Creating and Editing Title Blocks . . . . . . . . . . . Editing Page Title . . . . . . . . . . . . . . . . . . Entering Information into the Title Block . . . . . Creating a Custom Title Block . . . . . . . . . . . Adding Non-Electrical Information . . . . . . . . . . Text . . . . . . . . . . . . . . . . . . . . . . . . . . Graphics . . . . . . . . . . . . . . . . . . . . . . . Annotation Symbols . . . . . . . . . . . . . . . . Moving Non-Electrical Information . . . . . . . . Creating and Editing Multi-sheet Designs . . . . . . Adding a Page to a Design . . . . . . . . . . . . . Creating Connections Between Pages . . . . . . . Viewing Multiple Pages . . . . . . . . . . . . . . Cutting, Copying and Pasting Between Pages . . Deleting a Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 . 80 . 81 . 82 . 85 . 86 . 88 . 93 . 94 . 95 . 97 . 98 100 102 102 103 104 104 106 108 109 114 116 116 117 117 119 122 122 123 124 126 126 130 134 135 136 136 137 138 138 139 v Contents Printing Your Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 Closing the Schematic Editor . . . . . . . . . . . . . . . . . . . . . . . . . 146 Chapter 5 Using the Symbol Editor 147 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 149 149 149 150 150 151 151 152 152 152 153 153 153 154 156 157 158 158 160 161 162 162 162 163 163 164 165 166 167 Overview . . . . . . . . . . . . . . . . Components . . . . . . . . . . . . . . Symbols . . . . . . . . . . . . . . . Packaging Information . . . . . . Footprints . . . . . . . . . . . . . . Simulation Models . . . . . . . . . Starting the Symbol Editor . . . . . . Loading a Library for Editing . . Saving your Changes . . . . . . . Returning to the Schematic Editor Starting Automatically . . . . . . Symbol Editor Window . . . . . . . . Refreshing the Screen . . . . . . . Menus . . . . . . . . . . . . . . . . Toolbar . . . . . . . . . . . . . . . Title Bar . . . . . . . . . . . . . . . Keyboard . . . . . . . . . . . . . . Changing Text Characteristics . . . . Attribute Text . . . . . . . . . . . . Pin Name and Number . . . . . . Free-Standing Text . . . . . . . . . Changing Grid and Gravity . . . . . . Grid On . . . . . . . . . . . . . . . Stay-on-Grid . . . . . . . . . . . . Snap-to-Grid . . . . . . . . . . . . Grid Spacing . . . . . . . . . . . . Gravity . . . . . . . . . . . . . . . Text Grid . . . . . . . . . . . . . . Zooming and Panning . . . . . . . . . Printing Symbols . . . . . . . . . . . . Chapter 6 Creating and Editing Symbols 169 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169 171 171 173 Overview . . . . . . . . . . . . . . . . . . . . . . . . Creating New Symbols . . . . . . . . . . . . . . . . Using the Symbol Wizard . . . . . . . . . . . . . Creating a Symbol by Copying Another Symbol vi Contents Making a Copy of a Symbol . . . . . . . . . . . . . . . Importing a symbol definition . . . . . . . . . . . . . . Using AKO Symbols . . . . . . . . . . . . . . . . . . . Drawing Symbol Graphics . . . . . . . . . . . . . . . . . . Elements of a Symbol . . . . . . . . . . . . . . . . . . . Selecting . . . . . . . . . . . . . . . . . . . . . . . . . . Filling Shapes . . . . . . . . . . . . . . . . . . . . . . . Ordering Drawing Objects . . . . . . . . . . . . . . . . Rotating and Flipping Elements . . . . . . . . . . . . . Moving . . . . . . . . . . . . . . . . . . . . . . . . . . . Resizing . . . . . . . . . . . . . . . . . . . . . . . . . . . Editing Existing Symbols . . . . . . . . . . . . . . . . . . . Accessing Symbols . . . . . . . . . . . . . . . . . . . . Cutting, Copying, and Pasting . . . . . . . . . . . . . . Defining and Editing Pin Types . . . . . . . . . . . . . . . Specifying Pin Types . . . . . . . . . . . . . . . . . . . Defining and Editing Hidden Power and Ground Pins Changing Symbol Origin and Bounding Box . . . . . Editing Symbol Attributes . . . . . . . . . . . . . . . . . . Using Symbol Aliases . . . . . . . . . . . . . . . . . . . . . Specifying Part Packaging Information . . . . . . . . . . . Pin Assignment Lists . . . . . . . . . . . . . . . . . . . Packaging Definitions . . . . . . . . . . . . . . . . . . . Creating a New Package Definition . . . . . . . . . . . Copying a Package Definition . . . . . . . . . . . . . . Editing a Package Definition . . . . . . . . . . . . . . . Deleting a Package Definition . . . . . . . . . . . . . . Configuring Package Types . . . . . . . . . . . . . . . Configuring Custom Libraries . . . . . . . . . . . . . . . . Example--Creating Symbols from Scratch . . . . . . . . . Diode Bridge Rectifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173 174 175 178 178 182 183 184 185 187 187 188 188 189 191 191 194 195 197 200 201 201 202 202 203 204 211 212 214 216 216 Chapter 7 Creating and Editing Hierarchical Designs 225 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225 227 228 232 233 233 235 236 Overview . . . . . . . . . . . . . . . . . . . . . . Hierarchical Design Methods . . . . . . . . . . Creating and Editing Hierarchical Blocks . . . . Associating an Existing Schematic . . . . . . Creating and Editing Hierarchical Symbols . . Creating a Hierarchical Symbol . . . . . . . Converting Hierarchical Blocks to Symbols Using Interface Ports . . . . . . . . . . . . . . . vii Contents Setting Up Multiple Views . . . . . . . . . . . . . Translators . . . . . . . . . . . . . . . . . . . . Navigating Through Hierarchical Designs . . . . Assigning Instance-Specific Part Values . . . . . . Passing Information Between Levels of Hierarchy Example--Creating a Hierarchical Design . . . . Drawing the Top-Level Schematic . . . . . . . Drawing the Lower-Level Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237 237 239 241 242 244 244 248 Chapter 8 Preparing Your Design for Simulation 253 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253 255 255 256 257 258 259 259 259 260 260 266 267 267 267 268 269 Overview . . . . . . . . . . . . . . . . . . . . . . . . . Creating Designs for Simulation and Board Layout . Specifying Part Attributes . . . . . . . . . . . . . . Handling Unmodeled Pins . . . . . . . . . . . . . Specifying Simulation Model Libraries . . . . . . . . Editing Simulation Models from PSpice Schematics . Adding and Defining Stimulus . . . . . . . . . . . . . Placing Stimulus Sources . . . . . . . . . . . . . . Using the Stimulus Editor . . . . . . . . . . . . . . Setting Up Analyses . . . . . . . . . . . . . . . . . Creating a Simulation Netlist . . . . . . . . . . . . Starting the Simulator . . . . . . . . . . . . . . . . . . Viewing Results . . . . . . . . . . . . . . . . . . . . . Viewing Bias Point Results . . . . . . . . . . . . . Viewing Results as You Simulate . . . . . . . . . Using Markers . . . . . . . . . . . . . . . . . . . . Configuring Probe Display of Simulation Results Chapter 9 Using Design Journal 271 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271 Understanding Design Journal . . . . . . . . . . . . . . . . . . . . . . . . 272 Design Journal Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273 Chapter 10 Preparing Your Design for Board Layout 275 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275 277 277 279 280 281 283 Overview . . . . . . . . . . . . . . . . . . . . . . . . Connectors . . . . . . . . . . . . . . . . . . . . . . . Placing Connectors . . . . . . . . . . . . . . . . Creating Single-Pin Connector Symbols . . . . . Packaging the Parts in Your Design . . . . . . . . . Assigning Reference Designators Manually . . Assigning Reference Designators Automatically viii Contents Setting Package Class Priorities . . . . . . . . . . Generating a Bill of Materials Report . . . . . . . . . Printing and Saving the Report . . . . . . . . . . Customizing the Format of the Report . . . . . . User Defined Component Information . . . . . . Exporting to a Spreadsheet or Database Program Swapping Pins . . . . . . . . . . . . . . . . . . . . . . Interfacing to Board Layout Products . . . . . . . . . Layout Mapping Files . . . . . . . . . . . . . . . . Back Annotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284 286 287 288 289 290 291 292 294 298 Appendix A Exporting DXF Files 301 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301 302 303 304 Overview . . . . . . . . . . . . . . . . Exporting DXF Files . . . . . . . . . . Exporting from the Schematic Editor Exporting in the Symbol Editor . . . Appendix B Library Expansion and Compression Utility 305 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305 306 307 307 308 308 308 309 Overview . . . . . . . . . . . . . . . . . . . . . . . Using the Library Utility . . . . . . . . . . . . . . Expanding Library Definitions into Text Files . . Compressing Definition Files into a Library . . . Salvaging a Corrupted File . . . . . . . . . . . . . Reorganizing a Library File . . . . . . . . . . . . . .lst File Format . . . . . . . . . . . . . . . . . Running LXCWin Using Command Line Options Appendix C Advanced Netlisting Configuration Items 311 . . . . . . . . . . . . . . . . . . . . . . . . 311 312 313 314 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Specifying PSpice Node Name Netlisting Preferences . . . . Specifying Board Layout Node Name Netlisting Preferences Customizing EDIF Netlists . . . . . . . . . . . . . . . . . . . . Appendix D Appendix E Attribute List Symbol Libraries 315 321 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321 Using Symbol Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322 ix Contents Glossary Index 331 337 x Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Interaction of Sim Software Programs and Files . . . . . . . . . . . . Opto-isolated, Addressable Serial-to-parallel Converter Circuit . . . Border Styles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Placing Resistors with Various Vertical and Horizontal Offsets . . . Auto Naming for Bus Labels . . . . . . . . . . . . . . . . . . . . . . . Orthogonal Wire Drawing . . . . . . . . . . . . . . . . . . . . . . . . Rubberbanding with Orthogonal enabled . . . . . . . . . . . . . . . Rubberbanding with Orthogonal disabled . . . . . . . . . . . . . . . Rubberbanded path showing a potential connection . . . . . . . . . Off-page Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Global Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Selection rectangle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Printing with Auto-Fit Enabled . . . . . . . . . . . . . . . . . . . . . Zoom Factor Set to 100% with Printer Configured in Portrait Mode Zoom Factor Set to 200% with Printer Configured in Portrait Mode User-definable Zoom Enabled in Portrait Mode . . . . . . . . . . . . User-definable Zoom Enabled in Landscape Mode . . . . . . . . . . Pin Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Example of Diode Bridge Rectifier Symbol . . . . . . . . . . . . . . . Top-level Schematic Drawing for CMOS Inverter . . . . . . . . . . . Schematic of CMOS Inverter . . . . . . . . . . . . . . . . . . . . . . . A Working Schematic and Two Checkpoint Schematics . . . . . . . Entire Connector Symbol . . . . . . . . . . . . . . . . . . . . . . . . . Single Pin Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bill of Materials Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 .5 . 50 . 96 . 98 109 112 112 113 114 114 116 142 142 143 144 145 191 217 244 248 273 278 278 286 Figures xii Tables Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 Table 15 Table 16 Remaining Parts to be Placed . . . . . . . . . . Standard Schematics Toolbar . . . . . . . . . . Drawing Toolbar . . . . . . . . . . . . . . . . . Simulation Toolbar . . . . . . . . . . . . . . . Annotation Graphics Toolbar . . . . . . . . . Schematic Editor Function Keys . . . . . . . . Zoned Border Default Decimal Parameters . . Zoned Border Default Metric Parameters . . . Attribute Text Characteristics . . . . . . . . . Symbol Editor Toolbar Buttons . . . . . . . . Symbol Editor Function Keys . . . . . . . . . Display Characteristics . . . . . . . . . . . . . Content Options . . . . . . . . . . . . . . . . . Distinctions Between Connectors and Ports . Supported Layout Packages and File Formats .lst File Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 . 33 . 35 . 36 . 38 . 40 . 51 . 51 . 92 154 157 159 168 277 292 308 Before you begin Welcome Orcad family products offer a total solution for your core design tasks: schematic- and VHDL-based design entry; FPGA and CPLD design synthesis; digital, analog, and mixed-signal simulation; and printed circuit board layout. What's more, Orcad family products are a suite of applications built around an engineer's design flow--not just a collection of independently developed point tools. PSpice Schematics is just one element in our total solution design flow. PSpice Schematics is a schematic capture front-end program with a direct interface to PSpice. In one environment, you can do all of the following using PSpice Schematics: · · · design and draw circuits simulate circuits using PSpice analyze simulation results using Probe Chapter Before you begin · graphically characterize simulation stimuli using the fully integrated PSpice Stimulus Editor, so stimulus definitions are automatically associated with the appropriate symbols graphically characterize simulation models using the fully integrated PSpice Model Editor utility, so model definitions are automatically associated with the appropriate symbols interface to PSpice Optimizer for analog circuit performance optimization interface to PCB programs for printed circuit board layout · · · PSpice Schematics is fully integrated with PSpice, giving you the flexibility to work through your circuit design in a consistent environment. 16 How to use this guide How to use this guide This guide is designed so you can quickly find the information you need to use PSpice Schematics. To help you learn and use PSpice Schematics efficiently, this manual is separated into the following sections: · · · · · · · · · · Chapter 1 - Getting started Chapter 2 - Using Design Manager Chapter 3 - Using the schematic editor Chapter 4 - Creating and editing designs Chapter 5 - Using the Symbol Editor Chapter 6 - Creating and editing Symbols Chapter 7 - Creating and editing hierarchical designs Chapter 8 - Preparing your design for simulation Chapter 9 - Using Design Journal Chapter 10 - Preparing your design for board layout Symbols and conventions Our printed documentation uses a few special symbols and conventions. Notation C+r A, f, o Examples Press C+r. From the File menu, choose Open (A, f, o). Description Means to hold down the C key while pressing r. Means that you have two options. You can use the mouse to choose the Open command from the File menu, or you can press each of the keys in parentheses in order: first A, then f, then o. Text that you type is shown in monospace font. In the example, you type the characters P, A, R, A, and M. Monospace font In the Part Name text box, type PARAM. 17 Chapter Before you begin In Capture, open CLIPPERA.DSN. Path and filenames are shown in uppercase. In the example, you open the design file named CLIPPERA.DSN. Information that you are to provide is shown in italics. In the example, you save the design with a name of your choice, but it must have an extension of .DSN. UPPERCASE Italics In Capture, save design_name.DSN. Related documentation In addition to this guide, you can find technical product information in the online help, online books, and our technical web site, as well as in other books. The table below describes the types of technical documentation provided with PSpice Schematics. This documentation component . . . This online guide-- PSpice Schematics User's Guide Online help Provides this . . . An online, searchable version of this guide, available when choosing Online Manuals from the Orcad family program group (on the Start menu). Comprehensive information for understanding and using the features available in PSpice Schematics. You can access help from the Help menu in PSpice Schematics, by choosing the Help button in a dialog box, or by pressing 1. Topics include: · Explanations and instructions for common tasks. · Descriptions of menu commands, dialog boxes, tools on the toolbar and tool palettes, and the status bar. · Error messages and glossary terms. · Reference information. · Product support information. You can get context-sensitive help for a error message by placing your cursor in the error message line in the session log and pressing 1. 18 How to use this guide This documentation component . . . Orcad family customer support at www.orcad.com/technical/technical.asp Provides this . . . An Internet-based support service available to customers with current support options. A few of the technical solutions within the customer support area are: · The Knowledge Base, which is a searchable database containing thousands of articles on topics ranging from schematic design entry and VHDL-based PLD design to PCB layout methodologies. It also contains answers to frequently asked questions. · The Knowledge Exchange, which enables you to share information and ideas with other users and with our technical experts in a real-time online forum. You can submit issues or questions for open discussion, search the Knowledge Exchange for information, or send email to another participant for one-on-one communication. A list of new postings will appear each time you visit the Knowledge Exchange, providing you with a quick update of what's been discussed since your last visit. · The Technical Library, which contains online customer support information that you can search through by category or product. You can find product manuals, product literature, technical notes, articles, samples, books, and other technical information. Additionally, technical information can be obtained through SourceLink, which is an online customer support information service for users of Cadence software other than Capture, Component Information System (CIS), Express, Layout, or PSpice. · The Support Connection, which allows you to choose to either view and update existing incidents, or create new incidents. The information is delivered directly to us via our internal database. This service is only available to customers with current maintenance or Extended Support Options (ESOs) in the United States and Canada. · The Live Connection, which enables you to open access to your computer to a Customer Support person, who can then view your actions on your computer monitor as you demonstrate the problem you're having. Live Connection's two-way transmission can also let you view the actions on the Customer Support person's computer monitor, as he or she demonstrates a method or procedure to help you solve your problem. To participate in Live Connection, you need to contact a Customer Support person, in order to obtain a support number to grant you access to the Live Connection site, and to set up a time to "meet online" using Live Connection. 19 Chapter Before you begin 20