Design Rule Checking (DRC)
DRC helps to check is an essential part of the physical design flow and ensures the design meets manufacturing requirements and will not result in a chip failure. Its stands for the Design Rule Check.
Various foundries have their own design rules for masking and They have consistent processes to convert GDS II into a real layout/final product.
According to technology and process information, they define some set of rules which has to follow by a Physical Design Engineer while delivering GDS II.
Types of Design Rule Checking
- Minimum width
- Minimum spacing
- Minimum area
- Poly Extension from diffusion
- Minimum width and spacing via
- Fat wire Via keep out Enclosure
- Different net spacing
- Shorts violation
- End of Line spacing
- Metal enclosure
- Wide metal jog
- Misaligned Via wire
- Center via spacing
- Special notch spacing
- Different net Via cut spacing
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