What is the definition of LEF and DEF?

[Bella]

What is LEF (Library Exchange Format)? and What is DEF (Design Exchange Format)?. How they are used in ASIC?

 

[CatKing]

lef def format

Check
hxxp://www.openeda.org/
for spec and source code.

 

[albertyin]

what is lef

LEF is physcial data of cell library, DEF is P&R data

 

[tukken]

lef and def

Lef is physical boundry and Pin location abstact file

 

[daniel@2004]

what is lef def

roughtly to say, LEF is cell library data and process info, DEF is your design.