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基于施密特触发的高鲁棒性亚阈值标准单元

张跃军 韩金亮 张会红

张跃军, 韩金亮, 张会红. 基于施密特触发的高鲁棒性亚阈值标准单元[J]. 电子与信息学报, 2021, 43(6): 1550-1558. doi: 10.11999/JEIT210001
引用本文: 张跃军, 韩金亮, 张会红. 基于施密特触发的高鲁棒性亚阈值标准单元[J]. 电子与信息学报, 2021, 43(6): 1550-1558. doi: 10.11999/JEIT210001
Yuejun ZHANG, Jinliang HAN, Huihong ZHANG. High-Robust Sub-threshold Standard Cells Using Schmitt Trigger[J]. Journal of Electronics & Information Technology, 2021, 43(6): 1550-1558. doi: 10.11999/JEIT210001
Citation: Yuejun ZHANG, Jinliang HAN, Huihong ZHANG. High-Robust Sub-threshold Standard Cells Using Schmitt Trigger[J]. Journal of Electronics & Information Technology, 2021, 43(6): 1550-1558. doi: 10.11999/JEIT210001

基于施密特触发的高鲁棒性亚阈值标准单元

doi: 10.11999/JEIT210001
基金项目: 国家自然科学基金(61871244, 61874078),专用集成电路与系统国家重点实验室开放研究课题基(2019KF002),宁波市公益性计划项目(202002N3134),宁波市自然科学基金(202003N4107)
详细信息
    作者简介:

    张跃军:男,1982年生,副教授,研究方向为低功耗、高信息密度集成电路理论和设计、安全芯片理论和设计

    韩金亮:男,1996年生,硕士生,研究方向为低功耗集成电路设计

    张会红:女,1976年生,副教授,研究方向为控制理论与应用、低功耗集成电路理论与优化设计

    通讯作者:

    张会红 zhanghuihong@nbu.edu.cn

  • 中图分类号: TN492

High-Robust Sub-threshold Standard Cells Using Schmitt Trigger

Funds: The National Natural Science Foundation of China (61871244, 61874078), The Open Research Project Fund of the State Key Laboratory of AISC and Systems (2019KF002), The S&T Plan of Ningbo Science and Technology Department (202002N3134), The Ningbo Natural Science Foundation (202003N4107)
  • 摘要: 亚阈值电路是低功耗重要发展方向之一。随着电源电压降低,晶圆代工厂提供的标准单元电路性能容易受噪声和工艺偏差的影响,已经成为制约亚阈值芯片的瓶颈。该文提出一种基于施密特触发(ST)与反向窄宽度效应(INWE)的亚阈值标准单元设计方案。该方案首先利用ST的迟滞效应与反馈机制,在电路堆叠结点处添加施密特反馈管以优化逻辑门、减少漏电流、增强鲁棒性;然后,采用INWE最小宽度尺寸与分指版图设计方法,提高电路的开关阈值与MOS管的驱动电流;最后,在TSMC 65 nm工艺下构建标准单元的物理库、逻辑库和时序库,完成测试验证。实验结果表明,所设计的亚阈值标准单元与文献相比,功耗降低7.2%~15.6%,噪声容限提升11.5%~15.3%,ISCAS测试电路的平均功耗降低15.8%。
  • 图  1  6T施密特触发器及其泄漏路径

    图  2  6T施密特触发器的VTC曲线和开关电流比率

    图  3  施密特触发逻辑门

    图  4  半堆叠式ST亚阈值逻辑门

    图  5  NAND电路版图

    图  6  NOR电路版图

    图  7  SNM测试电路与蝶形图

    图  8  不同逻辑单元的静态噪声容限

    图  9  改进的ST电路与标准单元的延时、漏流、PDP及面积的对比

    表  1  基准测试电路验证与对比

    基准测试电路面积(µm2)单元数量功耗(mW)延时(nS)
    Cov_lib本文Cov_lib本文Cov_lib本文Cov_lib本文
    c4323014471391481.20E-021.01E-0228.2027.18
    c4995717421931803.48E-023.20E-0223.0121.53
    c8806238692402592.24E-021.86E-0225.0722.40
    c3540194226417687957.21E-026.10E-0237.2332.40
    c755231933726124611611.65E-011.26E-0138.8137.01
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-01-04
  • 修回日期:  2021-04-17
  • 网络出版日期:  2021-04-30
  • 刊出日期:  2021-06-18

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