Static read stability and write ability metrics in FinFET based SRAM considering read and write-assist circuits

This paper evaluates the read stability and write ability metrics of the SRAM not only for the basic bitcell but also for the bitcell with read and write assist circuits. Some metrics cannot be used to properly estimate the yield and the reasons are analyzed. Based on the analysis results, we suggest the read and write metrics which can properly estimate the yield regardless of assist circuits.