Engineering a Standard Cell Library for an Industrial Router with ASAP7 PDK

In this work we first look into the standard cell library enclosed with ASAP7 PDK to uncover the root causes that limit the use of this cell library for research and development. In view of the root causes, we propose a revised technology LEF file for the cell library. Experimental results show that, with the revised technology LEF file, an industrial router can complete place&route of a design up to 180 thousand cells with a core utilization of 90%. We further add 23 frequently used cells into the cell library and reshape pin layout of each cell to increase on-grid pin accessibility. The designs with the improved cell library are more routable and have fewer DRC errors.