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    • 2. 发明授权
    • Power down voltage control method and apparatus
    • US06560158B2
    • 2003-05-06
    • US09981782
    • 2001-10-17
    • Jong-hyun ChoiJei-hwan YooJong-eon LeeHyun-soon Jang
    • Jong-hyun ChoiJei-hwan YooJong-eon LeeHyun-soon Jang
    • G11C800
    • G11C5/143
    • A semiconductor device is provided for controlling entry to and exit from a power down (DPD) mode of a semiconductor memory comprising; a plurality of voltage generators for providing operating voltages to the semiconductor memory; a DPD controller for detecting a DPD condition and generating a DPD signal to control the application of the operating voltages to the semiconductor memory; and biasing circuitry for biasing a plurality of nodes of at least one of the plurality of voltage generators to at least one predetermined voltage potential to prevent false triggering of circuits upon entry/exit of DPD mode. Also provided is a semiconductor device, comprising: a plurality of input buffers for buffering a plurality of DPD-type signals for signaling a power down (DPD) condition including a DPD enter/exit signal: an auxiliary buffer for separately buffering the DPD enter/exit signal; a plurality of voltage generators for supplying operating voltages to internal circuit; DPD control circuit for receiving the DPD-type signals to decode DPD enter and exit commands and for outputting a voltage generator control signal to turn off the voltage generators when DPD enter command is decoded, and to turn off the plurality of buffers excluding the auxiliary buffer; and an auto-pulse generator for generating a voltage pulse upon receiving the DPD exit command to initialize internal circuits of the semiconductor device.
    • 5. 发明授权
    • Integrated circuit memory devices having reduced power consumption
requirements during standby mode operation
    • 集成电路存储器件在待机模式操作期间具有降低的功耗要求
    • US6058063A
    • 2000-05-02
    • US187544
    • 1998-11-06
    • Hyun-soon Jang
    • Hyun-soon Jang
    • G11C11/409G11C7/10G11C11/407G11C11/413H01L21/8238H01L27/092H03K19/0175G11C7/00
    • G11C7/1084G11C7/1045G11C7/1072G11C7/1078
    • Integrated circuit memory devices (e.g., SDRAM) include an input buffer and a power reduction control circuit which disables the input buffer in response to an inactive chip select signal (CSB). The input buffer comprises a first differential amplifier having a first input electrically coupled to an input signal line (PX) and a first pull-up transistor electrically connected in series between a pull-up reference node of the first differential amplifier and a power supply signal line (e.g., Vcc). The output of the power reduction control circuit is electrically connected to a gate electrode of the first pull-up transistor. The first pull-up transistor can be turned off in response to an inactive chip select signal (CSB=1), to thereby electrically disconnect the first differential amplifier from its power supply. The input buffer may also comprise a first pull-down transistor electrically connected in series between an output of the first differential amplifier and a reference potential signal line (e.g., GND) and the output of the power reduction control circuit is electrically connected to a gate electrode of the first pull-down transistor.
    • 集成电路存储器件(例如,SDRAM)包括输入缓冲器和功率降低控制电路,其响应于非活动芯片选择信号(CSB)禁用输入缓冲器。 输入缓冲器包括具有电耦合到输入信号线(PX)的第一输入的第一差分放大器和串联地电连接在第一差分放大器的上拉参考节点和电源信号之间的第一上拉晶体管 线(例如,Vcc)。 功率降低控制电路的输出电连接到第一上拉晶体管的栅电极。 可以响应于非活动芯片选择信号(CSB = 1)而关断第一上拉晶体管,从而将第一差分放大器与其电源电断开。 输入缓冲器还可以包括串联电连接在第一差分放大器的输出端和参考电位信号线(例如,GND)之间的第一下拉晶体管,并且功率降低控制电路的输出电连接到栅极 第一下拉晶体管的电极。
    • 6. 发明授权
    • Parallel bit test apparatus and parallel bit test method capable of reducing test time
    • 并行位测试装置和并行位测试方法,能够减少测试时间
    • US07941714B2
    • 2011-05-10
    • US12003900
    • 2008-01-03
    • Yong-hwan ChoKwun-soo CheonHyun-soon JangSeung-whan Seo
    • Yong-hwan ChoKwun-soo CheonHyun-soon JangSeung-whan Seo
    • G11C29/00G11C7/00
    • G11C29/40G11C5/04G11C29/1201G11C29/26G11C29/48G11C2029/2602
    • A parallel bit test (PBT) apparatus, included in memory chips that are stacked in a multi-chip package (MCP) and that share a set of data signal lines, may include: a comparing unit to output a data signal representative of a comparison between test data signals provided to a given one of the memory chips and corresponding data signals output therefrom, respectively; and a coding unit to output the representative data signal using a first subset of the shared set of data signal lines, the first subset not overlapping other subsets used by coding units corresponding to the other ones of the memory chips, respectively, the coding unit selecting one or more of the data signal lines amongst the shared set of data signal lines for inclusion in the first subset according to a first test mode register set (MRS) signal.
    • 包含在堆叠在多芯片封装(MCP)中并且共享一组数据信号线的存储器芯片中的并行位测试(PBT)装置可以包括:比较单元,用于输出表示比较的数据信号 分别提供给给定的一个存储器芯片的测试数据信号和从其输出的相应的数据信号之间; 以及编码单元,用于使用所述共享数据信号线组的第一子集输出所述代表数据信号,所述第一子集分别不与由所述存储器芯片中的其他存储器芯片对应的编码单元使用的其他子集重叠,所述编码单元选择 根据第一测试模式寄存器组(MRS)信号将数据信号线的共享数据集中的一个或多个数据信号线包括在第一子集中。