common-centroid using Layout XL

Hi,

How can I draw common-centroid layouts using Virtuoso Layout XL?

Thanks,
Umut

 

Hi Umut,

The schematic can either be drawn with mutiple transistors for the ones
in parallel or they can use the buss naming convention for the instance
name, M1<0:3> will give you 4 individual M1 devices connected in
parallel.

Best Regards,
Tim

 

[Erik Wanta]

Umut:
In the layoutXL options enable the option generate multiple instances.
When you import the iterated instance or one with a mFactor it will
create individual devices in the layout. You can then manually place
and route the the instances to achieve common centroiding.

Note Cadence has another tool called Neocell that automates common
centroiding.
---
Erik