|Title||Architecting a common-source-line array for bipolar non-volatile memory devices|
|Publication Type||Conference Paper|
|Year of Publication||2012|
|Authors||B Zhao, J Yang, Y Zhang, Y Chen, and H Li|
|Conference Name||Proceedings Design, Automation and Test in Europe, Date|
Traditional array organization of bipolar non-volatile memories such as STT-MRAM and memristor utilizes two bitlines for cell manipulations. With technology scaling, such bitline pair will soon become the bottleneck of density improvement. In this paper we propose a novel common-source-line array architecture, which uses a shared source-line along the row, leaving only one bitline per column. We also elaborate our design flow towards a reliable common-source-line array design, and demonstrate its effectiveness on STT-MRAM and memristor memory arrays. Our study results show that with comparable latency and energy, the proposed common-source-line array can save 33% and 21.8% area for Memristor-RAM and STT-MRAM respectively, comparing with corresponding traditional dual-bitline array designs. © 2012 EDAA.