Is there any rule about minimum hole area in diffusion ? I've got something that looks like below, is that an issue ? ( green is

ndiff

, red is

poly

). Magic isn't complaining and I didn't see anything in the "Periphery rules" document. The min distance between

ndiff

are respected (hole is 0.5u x 0.27u ) as well as distance to

poly

( 0.175u here ). ( For context this is part of a NAND address decoding, highly dense structure and pitch must be matched with all the rest so I'm riding the edge 😅 )

@tnt I don't see any diff hole area requirements. As far as I can tell this passes the design rules.