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To study the relationship between the original leakage current fluctuation and the detected variable retention time (VRT) from the retention test of dynamic random access memory (DRAM), we simulated the real procedure of the VRT measurement of DRAM. By investigating the results of the simulation, we proposed a new effective VRT measurement method based on the comparison between measurement and simulation. In addition, we investigated the characteristics of the VRT phenomenon in DRAM using the VRT characterization method developed in this study.
Kim et al. (Wed,) studied this question.