Re: Electric and Mocmos

[Steven Rubin]

> I'm now
> learning to make layouts in Electric. The technology is mocmos (now
> submicron), and the process is TSMC 0.18um. I was confused by:
>  
> 1. Should the lambda size be changed from 0.2um (default) to 
> 0.10um?
>    Where: Electric -> Technology -> change units ->
> mocmos 
>    Reference:
> http://www.mosis.org/products/fab/vendors/tsmc/tsmc018/

You should change lambda to 0.1um because the gate is 2 lambda
wide.  Mosis will shrink the 0.2um gate down to 0.18 when the
fabricate it.

>  2.
> Do I have to change the design rules? 
>    Where: Electric -> Tools -> DRC -> DRC Rules ...

You do not have to change the design rules if you are using MOSIS,
because they use SCMOS rules that are scalable.  Their one set of
rules applies to many different processes and sizes.

> 3. Can I
> refer to TSMC 0.18um process parameters for my layout? How to calculate
> the width of rails?
>    Parameters: sheet resistances, contact and vias resistances,
> and maximum current for metals/contact/vias,
> etc.

You will have to apply the process parameters yourself (for example when
creating SPICE headers).  Electric will extract simple parasitics
such as area and perimeter, but will not apply advanced features such as
you mention.

   -Steven Rubin