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Simulators >> Circuit Simulators >> hspice to spectre model conversion
https://designers-guide.org/forum/YaBB.pl?num=1295981979

Message started by jazzdup on Jan 25^th, 2011, 10:59am

Title: hspice to spectre model conversion
Post by jazzdup on Jan 25^th, 2011, 10:59am

Hello, I have a level=49 hspice model and need to convert to a spectre-readable model. Any advice? Thanks.

Title: Re: hspice to spectre model conversion
Post by Geoffrey_Coram on Jan 26^th, 2011, 5:42am

Did you try just running it straight? The Cadence folks on this board often mention Spectre's ability to read (H)Spice syntax; for a single model, I would expect it to work.

Title: Re: hspice to spectre model conversion
Post by bernd on Jan 26^th, 2011, 6:21am

You may try the Cadence command line tool 'spp'.
There is also an old App. Note on SourceLink (http://support.cadence.com)
'BSIM3V3.X MOSFET Model Compatibility:
HSPICE Level 49 - Spectre BSIM3V3.X'
http://support.cadence.com/wps/mypoc/cos?uri=deeplinkmin:DocumentViewer;src=wp;q=ApplicationNotes/Custom_IC_Design/BSIM3V3.X_MOSFET_Model_Compatibility_HSPICE.pdf
which may help.

*

Title: Re: hspice to spectre model conversion
Post by jazzdup on Jan 26^th, 2011, 8:16am

Thanks to all who replied.
Running it straight without modification throws an error at the level=49 specification.
We did try the spp command but that threw an error as well after the second line. The error msg was not helpful, something about an 'unexpected new line character after VERSION ='. There wasn't a new line character on that line.
I'll the cadence app note and give it another shot. Thanks again.

Title: Re: hspice to spectre model conversion
Post by Geoffrey_Coram on Jan 26^th, 2011, 9:58am

Are you using a recent version of Spectre?

Title: Re: hspice to spectre model conversion
Post by bernd on Jan 27^th, 2011, 5:08am

It might be useful to check the model syntax definition as
well. An unexpected new line error might result form a missing
'+' as new line indicator or a missing '\' as a end of line
statement.

*

Title: Re: hspice to spectre model conversion
Post by Ken Kundert on Jan 27^th, 2011, 8:27am

If the file came from a different operating system it might be using a different convention for newllines. You might try opening it in vim and typing

Code:

:set fileformat

If is says 'fileformat=unix' then this is not the problem. If it doesn't, you should type

Code:

:set fileformat=unix

and the save the file with

Code:

:wq

-Ken

Title: Re: hspice to spectre model conversion
Post by Andrew Beckett on Jan 30^th, 2011, 1:23pm

As Geoffrey asked, are you using a recent version of spectre (if so, what is it?). Ken's point is valid too (although I think that's handled OK nowadays, but I didn't check).

I wouldn't recommend using spp. This is obsolete and has not be maintained for maybe 6 years or so. The supported flow is to read the model directly in spectre. Ideally if it's in SPICE syntax, make sure the file name it is included in does not end in ".scs" (which means spectre syntax by default), and then it should behave.

Maybe you can show the error message you're getting?

Regards,

Andrew.