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Getting Started with MicroSim
Using MicroSimDesignLab
Using MicroSimSchematics
Using MicroSimPSpice A/D
Click the icon for the topic you want to learn more about.
Using MicroSimPCBoards
Using MicroSimPLSyn
Using MicroSimPSpice Optimizer
MicroSim Documentation
New! What’s New for Release 8.0
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Using MicroSim Schematics
Using MicroSim PSpice A/D
Using MicroSim PCBoards
Using MicroSim PLSyn
Using MicroSim FPGA
Click the icon for the topic you want to learn more about.
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MicroSim Documentation
★ MicroSim Schematics User’s Guide
★ MicroSim PSpice A/D & Basics+ User’s Guide
★ MicroSim PSpice & Basics User’s Guide
★ MicroSim PSpice A/D Reference Manual (this manual is online only)
★ MicroSim PSpice Optimizer User’s Guide
★ MicroSim PLSyn User’s Guide
★ MicroSim FPGA User’s Guide
★ MicroSim PCBoards User’s Guide
★ MicroSim PCBoards Autorouter User’s Guide (this manual is online only)
★ MicroSim PCBoards Reference Manual (this manual is online only)
★ MicroSim Application Notes (this manual is online only)
★ Library List (this manual is online only)
MicroSim documentation is available in both hardcopy and online formats.
Go to booksclick
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What is MicroSim FPGA?
➨ Used to design Xilinx FPGAs(Field Programmable Gate Arrays).
➨ Part of MicroSim DesignLab and works withMicroSim Schematics for design entry, andMicroSim PSpice A/D for simulation.
➨ Includes Xilinx Universal Library with symbols forXC2000, XC3000, XC4000, XC4000E, XC5200device families, including XBLOX .
➨ Only PC-based tool that can integrate FPGAs intoyour overall mixed analog/digital system design.
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What is it Used For?
★ Creating integrated designs combining FPGAs withanalog and discrete digital devices.
★ Designing stand-alone FPGAs.
★ Performing functional simulation (before place and route).
★ Performing timing simulation (after place and route).
★ Accessing Xilinx XACTstep from MicroSim Schematics.
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UsingMicroSim FPGA➊ Design entry in MicroSim
Schematics.
➋ Functional simulation andanalysis of simulation resultsin MicroSim Probe.
➌ Placing and routing in XilinxXACTstep.
➍ Timing simulation andanalysis of simulation resultsin Probe.
xilinx user libraries
analog &discretedigital libraries
MicroSimProbe MicroSim
Pspice A/D
MicroSimSchematics
XNF files
deviceconfiguration
data
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Setting Up YourFPGA in a
Mixed Design➊ Place a block to represent
the FPGA.
➋ Enter information for theFPGA in the Set Up Blockdialog box.
➌ Libraries are automaticallyconfigured based on thedevice family selected.
SelectXilinx.
Enter a filename forthe FPGA schematic.
Select the appropriatedevice family.
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Defining theLogic in
Your FPGAYou can easily select andplace Xilinx symbols usingthe Part Browser.
Select to display thePart Browser.
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FunctionalSimulation★ Use functional
simulation to quicklydebug designsprior to place and route.
★ For mixed designs, you cansimulate the entire design or theFPGA only.
runs functionalsimulation
runs timingsimulation
functionalsimulation
for adesignusing
X-BLOX
netlist file from anearlier design revision
★ Easy simulation setup—select functional simulation in theSimulation Setup dialog box, then start simulation.
★ View simulation results in Probe.
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Running XilinxXACTstep
➨ Running XACTstep fromSchematics is easy—justselect Run XACTstep fromthe Tools menu.
➨ Each time you runXACTstep, XNF files areautomatically updated asneeded.
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Timing SimulationTiming Simulation
View digital andanalog waveforms together.
Use Probe
to debug
the results
of your
simulation.
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Preparing forPCB Layout
. . . then lay out the boardin MicroSim PCBoards.
Place the FPGA symbolon the schematic . . .
FPGA, symbol,package and footprintlibraries are included.
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MicroSim FPGA
➨ Only PC-based tool that integrates FPGAs withanalog and discrete digital devices in a completesystem design.
➨ Integrated simulation: access both functional andtiming analysis through Schematics.
➨ Quick access to XACTstep.
Bring accurate circuits to market faster!
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What is the MicroSimPSpice Optimizer?
The MicroSim PSpice Optimizer is a circuitoptimization program that improves theperformance of analog and mixed analog/digitalcircuits. With the PSpice Optimizer, you can:
★ Run optimizations
★ Explore performance tradeoffs
★ Fit model parameters
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What is it Used For?
Running optimizationsThe PSpice Optimizer performs iterative simulations, whileadjusting the values of design parameters until performancegoals, subject to specified constraints, are nearly or exactly met.
Exploring performance tradeoffsThe PSpice Optimizer provides graphical feedback showingperformance. You can also tweak goal and constraint values toexamine changes to parameter values.
Fitting model parametersGiven a parameterized model, a set of measured data points,and a good starting point for the parameter values, the PSpiceOptimizer fits a more accurate model.
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Using the PSpice Optimizer
The PSpice Optimizer is fully integrated with otherMicroSim programs. This means you can:
★ Design your circuit with MicroSim Schematics.
★ Simulate with MicroSim PSpice A/D (or MicroSim PSpice).
★ Analyze results with MicroSim Probe.
★ Optimize performance within the same environment.
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PSpice OptimizerUser’s Guide
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Using MicroSim PCBoards
You can use MicroSim PCBoards to:
★ Specify printed circuit board structure as wellas the components, metal and graphics requiredfor fabrication.
★ Produce the artwork used in the manufacturingprocess, including information about the electricaland physical characteristics of the PCB layout.
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Starting MicroSim PCBoards
In Schematics, from the Tools menu,select Run PCBoards.
From the Start menu, point to theMicroSim program group, then selectthe MicroSim PCBoards icon.
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Start MicroSim PCBoards by doing one of the following:
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Starting a New Layout
Start a layout using one of four methods:
★ Load a netlist (MicroSim Schematics orPADS-compatible) into a default layout.
★ Load a netlist (MicroSim Schematics orPADS-compatible) into a structured layout(template concept).
★ Modify an existing layout and rename it.
★ Place components and connectionsinteractively (on-the-fly).
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Loading a Netlist
Netlist files contain a collection of componentand connectivity declarations, and provide aconvenient method for loading the layout.
★ MicroSim Schematic netlist (.nlf) describes the partsand connectivity as defined in the functional designcreated in Schematics.
★ PADS netlist (.pad) describes the parts andconnectivity of a design in the PADS-compatibleformat generated by other schematic capture andlayout programs.
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PCBoardsUser’s Guide
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What is MicroSim PLSyn?➨ Used to design PLDs (Programmable Logic Devices) and
CPLDs (Complex PLDs).
➨ Works with MicroSim Schematics and MicroSim PSpice A/D.
➨ Includes a part library with up to 3,500 PLDs and CPLDsfrom 12 manufacturers: Altera, AMD, Atmel, Cypress, ICT,Lattice, and more!
➨ Allows mixed-mode (schematic and language) design entry.
➨ Automatically partitions your design into multiple devices(with the PLSyn Partitioning option).
➨ Only PC-based tool that can integrate PLDs and CPLDs intoyour overall mixed analog/digital system design.
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★ Creating integrated designs combining PLDs and CPLDswith analog and discrete digital devices.
★ Generating a list of device solutions that meet your designspecifications; you then select the configuration that bestfits your design.
★ Performing functional simulation (before fitting andpart selection).
★ Performing timing simulation (after part selection).
★ Generating fuse map files.
What is it Used For?
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Using MicroSim PLSyn➊ Enter your design in Schematics.
➋ Perform functional simulation, andanalyze simulation results in Probe.
➌ Set device constraints and priorities.
➍ Run the PLSyn fitter to createa list of device solutions; solutionscan be a single device or multipledevices (with the Partitioning option).
➎ Select a solution to implementyour design.
➏ Perform timing simulation, and analyzesimulation results in Probe.
➐ Generate fuse maps to program thePLDs and/or CPLDs in your design.
Design
Simulate
DefineConstraints &
Priorities
Fit/Partition
SelectDevice
Simulatewith
Timing
ProgramDevice
Lay outthe PCB
DesignPhase
ImplementationPhase
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Placing LogicSymbols in
Your DesignYou can easily select andplace logic symbols with thePart Browser.
Use generic (e.g., gates orflip-flops), or 7400 Serieslogic symbols.
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Placing DSL Blocks in Your Design
Enter blocks of DSL (DesignSynthesis Language) to specifylogic for your design.
MicroSim Text Editor
DSL context-sensitivehelp by pressing F1.
Insert pre-defined DSL"templates." clickclick
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Running PLSyn
…or start it separately likeany Windows application.
Run PLSyn fromwithin Schematics...
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Setting Constraints
Use constraints to narrow the list ofdevices that the PLSyn fitterconsiders when searching forsolutions to your logic design.
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Fitting the Logic
Run the PLSyn Fitterto find solutions basedon your constraints.Solutions can be asingle device or
Select the solution that bestmeets your requirements.
Select the part(s) to usefor the chosen solution.
multiple deviceswith the same ordifferentarchitectures.
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Functional & Timing Simulation
View digital andanalog waveforms together...
…and useProbe todebug
the resultsof your
simulation.
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Preparing forPCB Layout
Use PLSyn to update theschematic with the selectedpart(s).
When you create the PCBnetlist for the system, thePLDs/CPLDs will beincluded.
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MicroSim PLSyn
➨ Only PC-based tool that integrates PLDs andCPLDs with analog and discrete digital devicesin a complete system design.
➨ Creates a list of device solutions to your logicdesign; you select the best solution.
➨ Integrated simulation: access both functional andtiming analysis through Schematics.
Bring accurate circuits to market faster!
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Using MicroSim PSpice A/D
The Simulation Process:
➊ Create and prepare theschematic for simulationwith MicroSim Schematics.
➋ Perform circuit simulationand analysis with PSpice.
➌ View simulation results withProbe.
globalmodels
localmodels
MicroSimSchematics
circuitfile set
stimulusfile
custominclude
files
outputfile
MicroSimPSpice A/D
Probedata file
MicroSimProbe
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Simulating a Circuitwith PSpice A/D
➨ PSpice performs simulation and analysis by:➊ Interpreting the information for the circuit in the Schematics files.
➋ Automatically running the simulation.
➌ Producing the Probe data file and simulation output file.
➨ When simulating, the wire connections to the pins ofparts shown in a schematic are transformed intoelectrical node connections to device terminals thatare interpreted by PSpice.
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Displaying Simulation Results
Probe Data Files★ The Probe data file contains simulation results that can be
viewed and manipulated in Probe, MicroSim’s graphicalwaveform analyzer application.
★ Probe reads the data and displays waveforms reflectingcircuit response at marked nets, pins, and devices in yourschematic or for output variables that you can specify inProbe.
Simulation Output Files★ The simulation output file is an ASCII text file containing lists
and tables describing the input circuit, the analysis directives,and the results of the specified simulations.
PSpice A/DUser’s Guide
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Using MicroSim Schematics
➨ Schematics is a front-end schematic captureprogram that you can use to:
• create and edit designs
• create and edit symbols
• create and edit hierarchical designs
• prepare a design for simulation
➨ Schematics has extensive symbol libraries and afully integrated symbol editor for creating yourown symbols or modifying existing symbols.
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Starting a New Design
To start the schematic editor with anempty schematic page: from the Startmenu, point to the MicroSim programgroup, then select Schematics.
If you already have Schematics runningwith another schematic displayed, clickthe New File button on the toolbar to starta new schematic.
SchematicsUser’s Guide
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What’s New in MicroSimSchematics
Design Journal:★ Create a checkpoint of a
design.★ Select non-MicroSim files to
save with design checkpoint.★ Record notes with a
checkpoint.★ Restore a checkpoint.★ Work on multiple design
checkpoints simultaneously.
Hierarchical Block Creation:★ Create a hierarchical block
from an existing schematic.★ Place pins automatically for
each schematic port.★ Accelerate bottom-up design
and reduce errors that occurwhen manually placing pins.
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What’s New in MicroSimSchematics
Design Manager:★ Create and manage workspaces for better design organization.★ Archive (and restore) designs.★ Create a copy of a design.★ Graphically browse to see a design’s components and
dependencies.★ Drag-and-drop design components between designs.★ Localize design dependencies. (Creates a self-contained instance
of a design.)★ Provide context-sensitive Help.
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What’s New in MicroSimSchematics
Annotation Graphics:★ Fill shapes for diodes,
transistors, and othersymbols.
★ Annotate the schematic withgraphics as well as text.
★ Add notes to an area of theschematic.
★ Control graphic propertiesand text appearance.
★ Incorporate bitmap graphics,such as a company logo.
★ Create zoned borders.★ Output DXF.
WYSIWYG OrthogonalRubberbanding:
★ Connectivity Watcher.★ Automatic Stair Stepping.★ Pin-to-Pin Connections are
rubberbanded.
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What’s New in MicroSimPSpice and PSpice A/D
with SchematicsDesign Journal:★ Compare simulation results
of different checkpoints(overlaid or in separate plots).
★ Display color-coded results inMicroSim Probe by designcheckpoint.
★ See checkpoint anddescription properties of atrace in MicroSim Probe.
Device Noise Spectra:★ View individual device noise
contributions in MicroSimProbe. Data available includetotal noise contribution andthe noise components ofindividual devices.
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What’s New in MicroSimPSpice and PSpice A/D
with SchematicsBias Point Display★ Displays the latest set of bias point information (Small Signal
Bias/DC Bias point or initial transient analysis) within MicroSimSchematics. The information available for display includes analogvoltages and digital states on wires, and currents into devices intodevice pins for both simulation primitives and macro-models.
★ Supports user-definable options (display ON/OFF, color, position,and precision control of displayed data, etc., which become thedefault for subsequent sessions).
★ Locates the source of topology errors such as floating nodes.★ Displayed values can be printed (as shown on schematic) for
documentation purposes.
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What’s New in MicroSimPSpice and PSpice A/D
with SchematicsSymbols from Models★ Automatically generates symbols for the models extracted by
MicroSim Parts.★ Automatically generates the corresponding symbol libraries for
simulation model libraries.★ Automatically configures the newly created or updated symbol
and model libraries for immediate use in MicroSim Schematics.★ Bases the symbol generation on MicroSim’s default symbol set or
user-provided symbol set.★ Generates symbols for analog, digital, or mixed-signal devices
(both primitives and macro-models).
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What’s New in MicroSimPSpice and PSpice A/D
with SchematicsBSIM3 V3 Built-In Model:★ Support for the Berkeley
BSIM3 V3 MOSFET model inMicroSim PSpice.
Device Equations Option:★ Compiler manufacturer and
version independence.★ Device equations now in
separately loaded DLL.
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What’s New in MicroSimPCBoards
Graphical Footprint Browser:★ Graphical part browser in
layout editor.★ Graphical footprint browser in
footprint editor.★ Checks for floating copper.★ Generated Autorouting Rules
Report.
Interactive Netlist Read-In:★ Netlist read-in and problem
resolution.★ Complete netlist read-in on
first try with problemreporting.
★ Interactive problem resolutionto correct database.
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DXF Input and Output:★ Imports and exports mechanical
drawing files in DXF format.
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What’s New in MicroSimDesignLab
★ Design Journal★ Design Manager★ WYSIWYG Orthogonal
Rubberbanding★ Bias Point Display★ Device Noise Spectra★ Symbols from Models
★ BSIM3 V3 Built-In Model★ Device Equations Option★ Graphical Footprint
Browser★ Interactive Netlist Read-In★ DXF Input and Output
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What’s New in MicroSimDesignLab
Simulate Multiple XilinxFPGAs
★ Each FPGA is simplyrepresented as a hierarchicalblock and can be connectedto analog and discrete digitalcomponents or other FPGAs.
★ Each FPGA can be from adifferent family.
★ Allows multiple-FPGAdesigns to be in differentstages of completion.
Import XNF★ Allows simulation of any Xilinx
FPGA within a mixedanalog/digital circuit.
★ Pins are added to the blockautomatically.
★ Supports XNF (Xilinx NetlistFormat, versions 5 and 6) filefrom any source such as fromobsolete design tools,synthesis tools, etc.
★ Automatically uses post placeand route timing information ifpresent in the XNF file.
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