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    • 1. 发明授权
    • Semiconductor memory device having fast data writing mode and method of
writing testing data in fast data writing mode
    • 具有快速数据写入模式的半导体存储器件和以快速数据写入模式写入测试数据的方法
    • US5903575A
    • 1999-05-11
    • US158837
    • 1993-11-29
    • Shigeru Kikuda
    • Shigeru Kikuda
    • G11C29/00G01R31/28G11C11/401G11C29/10G11C29/24G11C29/34H01L27/10
    • G11C29/24
    • Disclosed is a semiconductor memory device including a normal memory array and preliminary memory array enabling a mutual data transfer. Word lines in the normal memory array and those in the preliminary memory array are controlled by separate row decoders and separate word drivers. Bit lines and sense amplifiers are provided commonly to the normal memory array and the preliminary memory array. When test data is written in a predetermined pattern into the normal memory array, data corresponding to the predetermined pattern is written in advance for each memory cell in the preliminary memory array. Then, after the row decoder and word driver for the preliminary memory array are enabled so that the word lines in the preliminary memory array are activated, the row decoder and word driver for the normal memory array are enabled so that the word lines in the preliminary memory array are activated. Thus, data signals read from memory cells of one row in the normal memory array are simultaneously amplified by the sense amplifiers via the bit lines and then transferred via the bit lines to memory cells of one row in the preliminary memory array. In this result, the test data are written at one time into the memory cells of one row in the normal memory array.
    • 公开了一种包括正常存储器阵列和能够进行相互数据传输的初步存储器阵列的半导体存储器件。 正常存储器阵列中的字线和初步存储器阵列中的字线由单独的行解码器和单独的字驱动器控制。 位线和读出放大器通常提供给正常存储器阵列和初步存储器阵列。 当以预定图案将测试数据写入正常存储器阵列中时,预备存储器阵列中的每个存储单元预先写入与预定图案对应的数据。 然后,在初步存储器阵列的行解码器和字驱动器被使能以使得初步存储器阵列中的字线被激活之后,启用用于正常存储器阵列的行解码器和字驱动器,使得初步存储器阵列中的字线 存储器阵列被激活。 因此,从正常存储器阵列中的一行的存储单元读取的数据信号经由位线被读出放大器同时放大,然后经由位线被传送到预备存储器阵列中的一行的存储单元。 在该结果中,将测试数据一次写入正常存储器阵列中的一行的存储单元。
    • 7. 发明授权
    • Semiconductor memory device including a redundancy circuitry for
repairing a defective memory cell and a method for repairing a
defective memory cell
    • 包括用于修复有缺陷的存储单元的冗余电路的半导体存储器件以及用于修复有缺陷的存储器单元的方法
    • US5146429A
    • 1992-09-08
    • US617737
    • 1990-11-26
    • Shinji KawaiShigeru MoriShigeru Kikuda
    • Shinji KawaiShigeru MoriShigeru Kikuda
    • G11C11/413G11C29/00G11C29/04
    • G11C29/848
    • A semicondcutor memory device includes an array of a plurality of memory cells arranged in a matrix manner, and a row or column decoder responsive to an external address signal for generating a row or column selecting signal. The memory cell array comprises (n+1) rows or columns. The row or column decoder comprises n output nodes. Transmission gates are provided between the decoder output node and row lines or column selecting lines for connecting each output node and each row line or column selecting line. The transmission gates are formed of a pair of CMOS transmission gates, whereby one output node is connected to two adjacent row lines or column selecting lines. This memory device further includes a circuit defining the connection manner of the transmission gate. This defining circuit turns one pair of CMOS transmission gates ON and OFF complementally. When there is a defective memory cell, the decoder output nodes are grouped into a first group including the output node corresponding to the faulty row or column having the defective memory cell, and a second group formed of the remaining output nodes. The defining circuit applies control signals to the CMOS transmission gates so that the ON/OFF states of the CMOS transmission gate pair related to the first group of output nodes and the CMOS transmission gate pair related to the second group of output node differ. The memory device further includes switching devices provided corresponding to each row line or column selecting line, responsive to the control signal from the defining cirucit to be turned on/off. This switching device connects only the faulty row line or the faulty column selecting line to the reference potential fixedly.
    • 半切割器存储器件包括以矩阵方式布置的多个存储器单元的阵列,以及响应于用于产生行或列选择信号的外部地址信号的行或列解码器。 存储单元阵列包括(n + 1)行或列。 行或列解码器包括n个输出节点。 在解码器输出节点和用于连接每个输出节点和每行行或列选择线的行线或列选择线之间提供传输门。 传输门由一对CMOS传输门形成,其中一个输出节点连接到两个相邻的行线或列选择线。 该存储装置还包括限定传输门的连接方式的电路。 该定义电路互补地将一对CMOS传输门ON和OFF。 当存在有缺陷的存储器单元时,解码器输出节点被分组为包括与具有缺陷存储单元的故障行或列相对应的输出节点的第一组,以及由剩余输出节点形成的第二组。 定义电路将控制信号施加到CMOS传输门,使得与第一组输出节点相关的CMOS传输门对的ON / OFF状态和与第二组输出节点相关的CMOS传输门对不同。 存储器件还包括响应于来自定义电路的控制信号而被打开/关闭而对应于每行行或列选择线提供的开关装置。 该开关装置仅将故障行线或故障列选择线固定为参考电位。