reserved
From your website: 0.18 um (micrometers) /180nm (nanometers)
die size custom design.

Maybe you meant feature size.
Sorry, some typos here and there, will be fixed shortly. Thanks for the head-up. I clearly meant feature size.
I'm not one of the engineers but i'm in charge of creating the text contents you are reading, so you may encounter some small quirks like that one, the text will be fixed properly anyways in due time.
EDIT : Fixed all instances of the typo.
Cheers