Semiconductor memory device that can carry out read disturb testing and
burn-in testing reliably
    1.
    发明授权
    Semiconductor memory device that can carry out read disturb testing and burn-in testing reliably 失效
    可以可靠地进行读取干扰测试和老化测试的半导体存储器件

    公开(公告)号:US5917766A

    公开(公告)日:1999-06-29

    申请号:US978594

    申请日:1997-11-26

    IPC分类号: G11C29/34 G11C29/50 G11C7/00

    摘要: A semiconductor memory device that operates in various modes such as in a normal operation mode and a disturb accelerated test mode in which two word lines are activated simultaneously, includes a boosting power supply circuit, a boosted voltage supply line, and an input terminal connected to the boosted voltage supply line. In a disturb accelerated test mode or in a burn-in test mode, an external voltage is supplied from an external power supply to the input terminal. A word line is reliably boosted in voltage in a disturb accelerated test mode.

    摘要翻译: 一种半导体存储器件,其工作在诸如正常操作模式和同时激活两个字线的干扰加速测试模式的各种模式中,包括升压电源电路,升压电源线​​和连接到 升压电源线​​。 在干扰加速测试模式或老化测试模式下,外部电源从外部电源提供给输入端。 在干扰加速测试模式下,字线可靠地升高电压。

    Control signal generation circuit and semiconductor memory device that
can correspond to high speed external clock signal
    2.
    发明授权
    Control signal generation circuit and semiconductor memory device that can correspond to high speed external clock signal 失效
    控制信号发生电路和半导体存储器件可以对应于高速外部时钟信号

    公开(公告)号:US5812492A

    公开(公告)日:1998-09-22

    申请号:US781013

    申请日:1997-01-10

    CPC分类号: G11C7/1045

    摘要: A semiconductor memory device operates switched between a first readout mode in which data readout according to a specified activation of a column address strobe signal /CAS that shows a transition in synchronization with an external clock signal is output during a period including the specified activation of signal /CAS, and a second readout mode in which the readout data is output during a subsequent predetermined period of signal /CAS. A control circuit for controlling the data output timing from an output buffer activates the output buffer at an elapse of a predetermined time following the specified activation of signal /CAS in the first readout mode. In the second readout mode, the control circuit activates the output buffer according to activation of signal /CAS at a predetermined period.

    摘要翻译: 半导体存储器件在第一读出模式之间切换,在第一读出模式中,在包括指定的信号激活的时段期间输出其中根据指示的激活表示与外部时钟信号同步的转换的列地址选通信号/ CAS的数据读出 / CAS,以及在信号/ CAS的后续预定周期期间输出读出数据的第二读出模式。 用于从输出缓冲器控制数据输出定时的控制电路在第一读出模式中指定的信号/ CAS激活之后经过预定时间激活输出缓冲器。 在第二读出模式中,控制电路根据信号/ CAS在预定周期的激活来激活输出缓冲器。

    Semiconductor memory device allowing repair of a defective memory cell
with a redundant circuit in a multibit test mode
    4.
    发明授权
    Semiconductor memory device allowing repair of a defective memory cell with a redundant circuit in a multibit test mode 失效
    半导体存储器件允许在多位测试模式下用冗余电路修复有缺陷的存储单元

    公开(公告)号:US6003148A

    公开(公告)日:1999-12-14

    申请号:US781387

    申请日:1997-01-13

    CPC分类号: G11C29/34

    摘要: In a predetermined multibit test mode, a multibit test circuit 114 issues determination result data pairs RDM0 and /RDM0 to RDM3 and /RDM3, each of which corresponds to match/mismatch of logics of data read from memory cells selected by one column select line in corresponding one of memory cell plane blocks. In each memory cell plane block, memory cell columns selected by one single column select line can be replaced as a unit. The unit of memory cell columns containing a defective memory cell is replaced in accordance with determination result data RDM0 and /RDM0 to RDM3 and /RDM3.

    摘要翻译: 在预定的多位测试模式中,多位测试电路114将确定结果数据对RDM0和/ RDM0发送到RDM3和/ RDM3,每个RDM3和/ RDM3对应于从由一列选择线选择的存储器单元读取的数据的逻辑的匹配/不匹配 相应的一个存储单元平面块。 在每个存储单元平面块中,由单个列选择行选择的存储单元列可以被替换为单元。 根据确定结果数据RDM0和/ RDM0至RDM3和/ RDM3来替换包含有缺陷存储单元的存储单元列的单位。

    Semiconductor memory device having a multibit test mode
    6.
    发明授权
    Semiconductor memory device having a multibit test mode 有权
    具有多位测试模式的半导体存储器件

    公开(公告)号:US6061808A

    公开(公告)日:2000-05-09

    申请号:US332364

    申请日:1999-06-14

    CPC分类号: G11C29/34

    摘要: In a predetermined multibit test mode, a multibit test circuit 114 issues determination result data pairs RDM0 and /RDM0 to RDM3 and /RDM3, each of which corresponds to match/mismatch of logics of data read from memory cells selected by one column select line in corresponding one of memory cell plane blocks. In each memory cell plane block, memory cell columns selected by one single column select line can be replaced as a unit. The unit of memory cell columns containing a defective memory cell is replaced in accordance with determination result data RDM0 and /RDM0 to RDM3 and /RDM3.

    摘要翻译: 在预定的多位测试模式中,多位测试电路114将确定结果数据对RDM0和/ RDM0发送到RDM3和/ RDM3,每个RDM3和/ RDM3对应于从由一列选择线选择的存储器单元读取的数据的逻辑的匹配/不匹配 相应的一个存储单元平面块。 在每个存储单元平面块中,由单个列选择行选择的存储单元列可以被替换为单元。 根据确定结果数据RDM0和/ RDM0至RDM3和/ RDM3来替换包含有缺陷存储单元的存储单元列的单位。

    Semiconductor memory device having a voltage lowering circuit of which
supplying capability increases when column system is in operation
    10.
    发明授权
    Semiconductor memory device having a voltage lowering circuit of which supplying capability increases when column system is in operation 失效
    具有当列系统运行时供电能力增加的电压降低电路的半导体存储器件

    公开(公告)号:US5875145A

    公开(公告)日:1999-02-23

    申请号:US795529

    申请日:1997-02-05

    CPC分类号: G11C5/147

    摘要: A semiconductor memory device includes a memory cell array, peripheral circuits including a column decoder for connecting a word line, and a VDC circuit for peripherals, for generating an internal power supply voltage based on an external power supply voltage. VDC circuit for peripherals supplies the internal power supply voltage to peripheral circuits including the column decoder, other than the sense amplifier, output buffer and internal initial stage. The supplying capability of the VDC circuit for peripherals is increased in response to a VDCE signal which is output from a clock generation circuit when column decoder is activated. Therefore, even when power consumption in the peripheral circuit is increased as the column decoder is activated, sufficient power can be supplied to the peripheral circuit.

    摘要翻译: 半导体存储器件包括存储单元阵列,包括用于连接字线的列解码器和用于外围设备的VDC电路的外围电路,用于基于外部电源电压产生内部电源电压。 用于外设的VDC电路将内部电源电压提供给除了读出放大器,输出缓冲器和内部初始级之外的列解码器的外围电路。 响应于当列解码器被激活时从时钟发生电路输出的VDCE信号,外围设备的VDC电路的供应能力增加。 因此,即使当列解码器被激活时外围电路的功率消耗增加,也可以向外围电路提供足够的电力。