Auto-layout of standard cells

[Lightning19]

Hello,

I am in the process of creating a set of standard cells to be used in larger designs. I currently have the spice netlist models of these cells, and have performed library characterization to generate the .lib and .db library files.

Now, I would like to generate the layout of these cells, hopefully without having to manually lay out every cell.

I have come across tutorials for autolayout, but these tend to assume that the standard cell library layout is already available to the user, and it simply uses multiple instances of these standard cells to generate the desired layout.

Is there a way to autolayout the standard cells?

Thanks.

 

[randyest]

I'm confused. How do you have extracted SPICE data for a cell that hasn't been designed yet? Normally you do cell layout to make gds2, then extract SPICE from that, then make LEF, lib, etc. Not the other way around.

 

[Lightning19]

I do not have the extracted parasitics of these cells.

I have a pre-layout netlist of the cells (I created the transistor-level netlists manually, and then ran HSPICE simulations to ensure correct functionality).

 

[randyest]

Oh, I see. Thanks for clarifying and sorry for my confusion. I don't know any automatic layout tool, but that doesn't mean they don't exist. Maybe so, but it seems like a complicated task compared to standard-cell placement tools and the like. Cell design is much harder for a computer I think.