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Impact of gate-oxide breakdown on power-gated SRAM

机译:栅极氧化物击穿对功率门控SRAM的影响

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This paper presents a detailed analysis on the impacts of various gate-oxide breakdown (BD) paths in column-based header- and footer-gated SRAMs. It is shown that with gate-oxide BD, the RSNM (read static noise margin) degrades, while the WM (write margin) improves in general. The effects of gate-to-source BD of cell transistors are shown to confine to the individual cell, while multiple cells suffering cell transistor drain-to-drain BD in a column could cumulatively affect VVDD (header structure) or VVSS (footer structure), thus influencing other cells in the same column. In particular, we show that the gate-oxide BD of the power-switches have server and even detrimental effects on the margin, stability, and performance of the SRAM array.
机译:本文对基于列的页眉和页脚门控SRAM中各种栅氧化层击穿(BD)路径的影响进行了详细分析。结果表明,使用栅氧化物BD时,RSNM(读静态噪声容限)下降,而WM(写容限)总体上有所改善。单元晶体管的栅极至源极BD的影响仅限于单个单元,而列中遭受单元晶体管漏极至漏极BD的多个单元可能会累积影响VVDD(页眉结构)或VVSS(页脚结构) ,因此会影响同一列中的其他单元格。特别是,我们表明电源开关的栅极氧化物BD对SRAM阵列的裕度,稳定性和性能具有服务器甚至有害的影响。

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