[Magic-dev] Query about 'units microns' statement in tech file extraction

R. Timothy Edwards tim at opencircuitdesign.com
Sun Dec 23 10:26:39 EST 2007


Dear Graham,

>    But I find that the result is 1000X too small. It looks like "Cap is half
> the capacitance in attofarads per micron when the edges are 1 lambda apart",
> which means entering a sidewall value of
> 
>     sidewall (*poly)/a ~(*poly)/a ~(*poly)/a (*poly)/a 5000
> 
>    Is this the desired behaviour?

When dealing with a development version like 7.5, it is always wise to
distinguish between the "implemented behavior" and the "desired behavior".
In this case, the "desired behavior" would be not to mix microns and
lambda---I just missed the extra conversion factor required by the
sidewall statement.  I will fix this.

					Regards,
					Tim

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