How to check Floating Metal

[layout_tech]

Hi all,

Now I am researching how to check floating gate on assura. Pls help me how to check it.

Thanks,

Sky

 

[erikl]

Floating gates could already be found by schematic ERC (Electrical Rules' Check).

Floating poly and metal can be found by a layout DRC. Here a few floating check lines from a former Assura (resp. Diva) DRC file (also called "ERC"):

saveDerived( geomOutside( CPOL CCON ) "floating CPOL, # ERC" )
saveDerived( geomOutside( CME1 geomOr( CCON CVIA ) ) "floating CME1, # ERC" )
saveDerived( geomOutside( CME2 geomOr( CVIA CVI2 ) ) "floating CME2, # ERC" )
saveDerived( geomOutside( CME3 CVI2 ) "floating CME3, # ERC" )
saveDerived( geomOutside( CPO2 CCON ) "floating CPO2, # ERC" )
saveDerived( geomOutside( cpol4cap CCON ) "floating polysilicon bottom plate, # ERC" )