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    • 6. 发明专利
    • Semiconductor integrated circuit
    • 半导体集成电路
    • JP2008262637A
    • 2008-10-30
    • JP2007104823
    • 2007-04-12
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • YAMAGAMI YOSHINOBU
    • G11C11/413
    • G11C8/08G11C11/412G11C11/413G11C29/02G11C29/021G11C29/028G11C29/48G11C2029/5002G11C2029/5004G11C2029/5006
    • PROBLEM TO BE SOLVED: To improve static noise margin even when there are variation in transistor characteristic and operating environment. SOLUTION: A semiconductor integrated circuit comprises a plurality of memory cells disposed in a matrix, a plurality of word lines corresponding to each row of a plurality of the memory cells, a plurality of word line drivers for driving each of the plurality of word lines, and a plurality of pull-down circuits connected to the word lines for adjusting voltage of the word lines to be equal to or lower than the voltage of a power supply when the connected word lines are active. The plurality of word line drivers have transistors for activating the corresponding word lines. The plurality of pull-down circuits respectively have pull-down transistors which have the same conductivity type as for transistors included in the word line drivers for driving the corresponding word lines to pull-down the word lines. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:即使在晶体管特性和操作环境有变化的情况下,也可以提高静态噪声容限。 解决方案:半导体集成电路包括以矩阵形式设置的多个存储单元,与多个存储单元的每行对应的多个字线,多个字线驱动器,用于驱动多个存储单元 字线和连接到字线的多个下拉电路,用于在连接的字线活动时将字线的电压调整为等于或低于电源的电压。 多个字线驱动器具有用于激活相应字线的晶体管。 多个下拉电路分别具有下拉晶体管,其具有与包括在用于驱动相应字线以降低字线的字线驱动器中的晶体管相同的导电类型的下拉晶体管。 版权所有(C)2009,JPO&INPIT