Calculating method for inductance in a semiconductor integrated circuit
First Claim
1. A calculating method for an inductance in a semiconductor integrated circuit, comprising:
- a step of recognizing connection of a wiring and structure of the wiring from a process structure and layout data of the wiring with respect to an object in a designated region;
a step of dividing the wiring into a plurality of segments based on predetermined places to be divided and designated wiring length with respect to the recognized connection and structure of the wiring;
a step of obtaining a relation between the divided two segments; and
a step of calculating partial self inductances of the respective segments based on the obtained relation between the two segments using an equation of a self inductance approximated with a geometric mean distance (GMD) of a wiring section and calculating a partial mutual inductance between the two segments using an equation of a mutual inductance.
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Abstract
There is disclosed a calculating method for an inductance in a semiconductor integrated circuit, comprising first recognizing connection of a wiring and structure of the wiring from a process structure and layout data of the wiring with respect to an object in a designated region. Next, the wiring is divided into a plurality of segments based on predetermined places to be divided and designated wiring length with respect to the connection and structure of the wiring. Next, a relation between the divided two segments is obtained. Next, an equation of a self inductance approximated with a geometric mean distance (GMD) of a wiring section is used to calculate partial self inductances of the respective segments based on the relation between the two segments. Moreover, an equation of a mutual inductance is used to calculate a partial mutual inductance between the two segments.
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Citations
11 Claims
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1. A calculating method for an inductance in a semiconductor integrated circuit, comprising:
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a step of recognizing connection of a wiring and structure of the wiring from a process structure and layout data of the wiring with respect to an object in a designated region;
a step of dividing the wiring into a plurality of segments based on predetermined places to be divided and designated wiring length with respect to the recognized connection and structure of the wiring;
a step of obtaining a relation between the divided two segments; and
a step of calculating partial self inductances of the respective segments based on the obtained relation between the two segments using an equation of a self inductance approximated with a geometric mean distance (GMD) of a wiring section and calculating a partial mutual inductance between the two segments using an equation of a mutual inductance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification