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The built-in layer constraint definition oacMaxWidth defines the maximum width for a piece of geometry in database units.
| Constraint type: | oaLayerConstraint |
| Value types: | oaIntValue |
| Database types: | oaDesign, oaTech |
| Object types: | oaRoute, oaPin, oaScalarNet, oaBusNetBit, oaAppObject |
The following value types are supported by this constraint:
oacMaxWidth constraints have an oaIntValue that represents the maximum width for the geometry.
Units: DBU
The primary reason for maximum width rules is to improve long-term reliability and incorporate stress relief for large metal shapes. Wide metal rules are similar to slotting rules. Their usage helps alleviate stresses that can occur for large metal shapes due to the different contraction and expansion rates of metal and oxide layers.
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