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Library Exchange Format

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Library Exchange Format (LEF) is an specification for representing physical layout of an integrated circuit in an ASCII format. It includes design rules and abstract information about the cells[1]. LEF is used in conjunction with Design Exchange Format (DEF) to represent complete physical layout of an integrated circuit while it is being designed.

LEF was developed by Cadence Design Systems.

References

  1. ^ http://www.cs.umbc.edu/~cpatel2/links/641/slides/lect04_LEF.pdf
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