Creating cell libraries with a large number of cells

摘要

Techniques for organizing a cell library permit a large number of cells. To improve design accuracy using cell libraries, very large cell libraries are needed. However, optimization tools are not able to use very large cell libraries directly, since their results suffer. Very large cell libraries are organized into sublibraries that are adapted to be processed by optimization tools. This allows improvement in the design quality of integrated circuits, while allowing the designs to be processed by optimization tools.

主权项

1. A method comprising:
providing a plurality of cells in a cell library; filtering the cells according to function identification tag to obtain first filtered cells, wherein the function identification tag is a unique identification tag that identifies the logic functionality that is implemented by the cell; and using at least one processor, using topological characteristics to divide the first filtered cells into two or more subsets of the plurality of cells in the cell library, wherein the using topological characteristics to divide the first filtered cells into two or more subsets of the plurality of cells comprises: placing in a first subset selected cells of the first filtered cells having X number of devices of a first device type in series and Y number of devices of a second device type in series.