Modeling of cell delay change for electronic design automation

A method for producing data for a cell library for electronic design automation, the cell library having a plurality of entries, entries in the plurality including characterizing data for a corresponding cell realizable in an initial form by a technology;

• including parameters of a delay model from which a delay value for the corresponding cell is determinable as a function of characteristics of a layout file including the corresponding cell in the initial form, the method for an entry in the cell library comprising:
• producing parameters of a model to estimate as a function of modifications of the initial form of the corresponding cell, a characteristic of an event in cell switching behavior, where changes in the characteristic of the event correlate with changes in delay of the corresponding cell in the initial form due to modifications;
• and
• producing parameters of a delay change model to estimate as a function of the characteristic, delay change due to the modification relative to the delay value of the initial form of the corresponding cell.

A cell library, comprising:

• non-transitory computer readable data storage having stored therein a computer-implemented cell library having a plurality of entries, entries in the plurality including characterizing data for a corresponding cell realizable in an initial form by a technology;
• the characterizing data in an entry for a corresponding cell including:
• parameters of a delay model for the corresponding cell in the initial form, from which delay values for the corresponding cell are determinable as a function of characteristics of a layout file including the corresponding cell in the initial form;
• parameters of a model to estimate as a function of modifications of the initial form, a characteristic of an event in cell switching behavior, where changes in the characteristic of the event correlate with changes in delay of the corresponding cell in the initial form due to modifications;
• and
• parameters of a delay change model to estimate as a function of the characteristic of an event, delay change due to the modification relative to delay of the initial form of the corresponding cell.