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    • 7. 发明授权
    • SRAM voltage control for improved operational margins
    • SRAM电压控制,提高运营利润率
    • US07466604B2
    • 2008-12-16
    • US11998948
    • 2007-12-03
    • Wayne F. EllisRandy W. MannDavid J. WagerRobert C. Wong
    • Wayne F. EllisRandy W. MannDavid J. WagerRobert C. Wong
    • G11C5/14G11C11/00
    • G11C5/14G11C11/413
    • A static random access memory (“SRAM”) is provided which includes a plurality of SRAM cells arranged in an array having a plurality of portions. The SRAM includes a plurality of voltage control circuits corresponding to respective ones of the plurality of portions of the array. Each of the plurality of voltage control circuits is coupled to an output of a power supply, each voltage control circuit having a function to temporarily reduce a voltage provided to power supply inputs of a plurality of SRAM cells that belong to a selected one of the plurality of portions of the SRAM. The power supply voltage to the selected portion is reduced during a write operation in which a bit is written to one of the SRAM cells belonging to the selected portion.
    • 提供了一种静态随机存取存储器(“SRAM”),其包括以具有多个部分的阵列布置的多个SRAM单元。 SRAM包括对应于阵列的多个部分中的相应部分的多个电压控制电路。 多个电压控制电路中的每一个耦合到电源的输出,每个电压控制电路具有临时降低提供给属于多个所选择的多个SRAM单元中的多个SRAM单元的电源输入的电压的功能 的SRAM部分。 在将位写入属于所选部分的SRAM单元之一的写操作期间,所选部分的电源电压降低。
    • 8. 发明授权
    • SRAM voltage control for improved operational margins
    • SRAM电压控制,提高运营利润率
    • US07313032B2
    • 2007-12-25
    • US11164556
    • 2005-11-29
    • Wayne F. EllisRandy W. MannDavid J. WagerRobert C. Wong
    • Wayne F. EllisRandy W. MannDavid J. WagerRobert C. Wong
    • G11C5/14G11C11/00
    • G11C5/14G11C11/413
    • A static random access memory (“SRAM”) is provided which includes a plurality of SRAM cells arranged in an array. The array includes a plurality of rows and a plurality of columns. The SRAM includes a plurality of voltage control corresponding to respective ones of the plurality of columns of the array. Each of the plurality of voltage control circuits are coupled to an output of a power supply, each voltage control circuit having a function to temporarily reduce a voltage provided to power supply inputs of a plurality of SRAM cells that belong to a selected column of columns of the SRAM. The selected column is selected and the power supply voltage to that column is reduced during a write operation in which a bit is written to one of the SRAM cells belonging to the selected column.
    • 提供了包括以阵列布置的多个SRAM单元的静态随机存取存储器(“SRAM”)。 阵列包括多个行和多个列。 SRAM包括对应于阵列的多个列中的相应列的多个电压控制。 多个电压控制电路中的每一个耦合到电源的输出,每个电压控制电路具有临时降低提供给属于所选列列的多个SRAM单元的电源输入的电压的功能 SRAM。 选择的列被选择,并且在将位写入属于所选列的SRAM单元之一的写操作期间,该列的电源电压减小。
    • 9. 发明授权
    • Circuit design
    • 电路设计
    • US08099688B2
    • 2012-01-17
    • US11985961
    • 2007-11-19
    • Wayne F. EllisRandy W. MannDavid J. WagerRobert C. Wong
    • Wayne F. EllisRandy W. MannDavid J. WagerRobert C. Wong
    • G06F17/50
    • G11C11/413G11C5/14
    • A design process includes inputting a design file representing a circuit design embodied in a non-transitory computer-readable medium, and using a computer to translate the circuit design into a netlist. The netlist comprises a representation of a plurality of wires, transistors, and logic gates, and is stored in the non-transitory computer-readable medium. When executed by the computer, the netlist produces the circuit design. The circuit design comprises a static random access memory (“SRAM”) including a plurality of SRAM cells arranged in an array, including a plurality of rows and a plurality of columns, and a plurality of column voltage control circuits corresponding to respective ones of the plurality of columns of the array. Each of the plurality of voltage control circuits is coupled to an output of a power supply and is operable to temporarily reduce a voltage upon arrival of a bit select signal provided to power supply inputs of a plurality of SRAM cells belonging to a selected column of the plurality of columns. The selected column is selected during a write operation in which a bit is written to one of the plurality of SRAM cells belonging to the selected column. Each column voltage control circuit includes an NFET and a pair of PFETs. Each NFET and pair of PFETs has a conduction path directly connected between the output of the power supply and the power supply inputs of the plurality of SRAM cells.
    • 设计过程包括输入表示在非暂时计算机可读介质中体现的电路设计的设计文件,并使用计算机将电路设计转换成网表。 网表包括多个线,晶体管和逻辑门的表示,并且存储在非暂时计算机可读介质中。 当由计算机执行时,网表产生电路设计。 该电路设计包括一个静态随机存取存储器(“SRAM”),它包括多个排列成阵列的SRAM单元,包括多行和多列,以及多个列电压控制电路, 阵列的多列。 多个电压控制电路中的每一个耦合到电源的输出,并且可操作以在到达时临时减小提供给属于所选择的列的所选列的多个SRAM单元的电源输入的位选择信号 多列。 在写入操作期间选择所选列,其中将位写入属于所选列的多个SRAM单元之一。 每列电压控制电路包括NFET和一对PFET。 每个NFET和一对PFET具有直接连接在电源的输出端与多个SRAM单元的电源输入端之间的导通路径。