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  1. #1
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    Cheap/free IC Design software

    Hi Guys,

    Are there any free IC Design software packages? MG and Cadence are too expensive.

    Thanks.

    •   Alt6th April 2010, 02:06

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  2. #2
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    Cheap/free IC Design software

    Magic and Electric are open source free ones. LASI is a layout tool and is free. There are various free or low cost Spice simulators such as Winspice. The demo versions of some packages can be quite useful e.g. SIMetrix free version is only limited by circuit size, not function: http://www.simetrix.co.uk/site/downloads/download.htm

    Keith.
    I started life with nothing and I've still got most of it left. (Seasick Steve)



    •   Alt6th April 2010, 08:51

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    Cheap/free IC Design software

    The real question is, "Where are the free foundry PDKs?".

    Because you can make whatever kind of polygon stew you
    want, but it comes to nothing if you can't get it onto the reticle
    (and foundries can be very rigid about the "golden" tapeout
    tool set) or if it's all on you to make the layers, device
    primitives, models and verification decks.

    You might spend some time working backwards from that
    viewpoint, and see if any free tools support the foundry
    you intend to use, and vice versa.



    •   Alt6th April 2010, 15:40

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  4. #4
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    Cheap/free IC Design software

    Foundries supply Hspice models. DRC you have to do yourself unless the foundry will do it. I know some foundries will do DRC for a reasonable cost. You can use their GDSII device primitives as a starting point for layout. It may not be ideal, but it can certainly be done with some foundries. It depends on what you are trying to achieve. I have never used Cadence but have successfully made more than a dozen analog chips.

    Keith.
    I started life with nothing and I've still got most of it left. (Seasick Steve)



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    Cheap/free IC Design software

    Thanks for the link,Keith.
    I am trying to run that in windows. I didn't look to see if this is UNIX only but does that run in windows? I was looking for a setup file but could not find it.

    I agree, Dick. Right now I am trying to design a VCO test chip and thinking of using mosis to tape it out.



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    Re: Cheap/free IC Design software

    Quote Originally Posted by design_oriented
    Thanks for the link,Keith.
    I am trying to run that in windows. I didn't look to see if this is UNIX only but does that run in windows? I was looking for a setup file but could not find it.

    I agree, ****. Right now I am trying to design a VCO test chip and thinking of using mosis to tape it out.
    If you mean SIMetrix, it is Windoze, but there is a Linux version as well.

    Keith



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    Cheap/free IC Design software

    I believe Electric has linux binaries but last time I played
    with it (maybe 5 years or more) I had to compile it from
    source w/ MS visual C++.

    I never did use it seriously because its "arc" construct
    was essential to LVS, but reading in GDS files the "arcs"
    are not made, so you can't have any hope of working
    on "legacy" / external designs to completion.

    I would give LASI a serious look, there are some MOSIS
    setups (thouch MOSIS spans multiple foundries and your
    target fab may, or may not, be among them).



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    Re: Cheap/free IC Design software

    Quote Originally Posted by dick_freebird
    I would give LASI a serious look, there are some MOSIS
    setups (thouch MOSIS spans multiple foundries and your
    target fab may, or may not, be among them).
    I have done a few designs with LASI with no problems. I have never used for LVS, although I have written a few DRC files.

    Keith.



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