Synopsys, Inc.

Bulent Basaran

Donald John Oriordan

Friedrich Gunter Kurt Sendig

Jingyu Xu

Jon Francis Bendicksen

Larissa Nitchougovskaia

Nabil Yazdani

The independent claims of this patent signify a concise description of embodiments. Embodiments described herein are directed to a database-driven scheme for automating the process of VDRC checking in a full-custom EDA Design and Implementation tool. Various embodiments include at least a computer-implemented method of performing Voltage-based Design Rule Checking (VDRC) in a full-custom EDA Design and Implementation Platform is provided, the method comprising receiving a plurality of net voltages from at least a first net and a second net, wherein reception of the plurality of net voltages is from one or more of a simulation, a plurality of simulations, manual override, or direct input, determining a net voltage range, the net voltage range being a difference between a first net voltage of a first net and a second net voltage of a second net, causing transfer of the net voltage range to a layout editing process, the layout editing process resulting in generating a layout, and performing VDRC verification, confirming a VDRC clean layout. This Abstract is not intended to limit the scope of the claims.

Full-custom voltage-dependent design rules (VDRC) flow

Embodiments relate to using placement grids corresponding to repeating track patterns of metal layers in a region to place circuit elements. Each placement grid is defined by as a vertical pitch of a repeating track pattern of one metal layer and a horizontal pitch of another repeating track pattern of another metal layer. Each circuit element is assigned with a placement grid so that it can be placed in alignment with the assigned placement grid. By using the placement grids derived from the track patterns, routable placement of circuit elements can be performed automatically or manually with reduced efforts.

Placement of circuit elements in regions with customized placement grids

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Atlanta, GA, United States of America

Bulent Basaran