Andrew Beckett
Senior Fellow
Offline
Life, don't talk to me about Life...
Posts: 1742
Bracknell, UK
|
The default DBUperUU (Database Unit per User Unit) for schematics and symbols is 160, and the User Unit is an Inch. So this means the database resolution is 1/160 inch, i.e. 0.00625. The actual database is stored using integers.
So this means that 0.03125 is represented with 5 database units. If you were to use half that, it would need 2.5 database units - and since they are integers, it will be either 2 or 3. So this will explain the anomaly, I think.
You didn't actually say which view you were talking about, or even which tools you were talking about. I'm guessing you're talking about Virtuoso Schematic Editor - but you really should be more specific when you post - not everyone in this forum is using Cadence tools.
Best Regards,
Andrew.
|