SEMICONDUCTOR MEMORY REDUNDANT ELEMENT IDENTIFICATION CIRCUIT
    1.
    发明申请
    SEMICONDUCTOR MEMORY REDUNDANT ELEMENT IDENTIFICATION CIRCUIT 审中-公开
    半导体存储器冗余元件识别电路

    公开(公告)号:WO1982002793A1

    公开(公告)日:1982-08-19

    申请号:PCT/US1981000137

    申请日:1981-02-02

    发明人: MOSTEK CORP

    IPC分类号: G11C11/40

    CPC分类号: G11C29/835 G11C29/44

    摘要: Test circuit (10) for a semiconductor memory. The semiconductor memory includes a redundant decoder (70) for receiving memory address signals (66, 68) which is connected to a redundant circuit element via a signal line (72). The redundant decoder (70) can be programmed in accordance with the address of a defective circuit element, such that when the decoder (70) is addressed by the memory address signals (66, 68) the decoder (70) selects a predetermined redundant circuit element. The test circuit (10) generates an output signal (14) indicating that the circuit element selected by the decoder (70) is a redundant circuit element. The output signal (14) is applied to an indicator circuit (16) which is enabled in a test mode by an abnormal condition detector (26). The output (18) of indicator circuit (16) is applied to an external pin (20).

    摘要翻译: 用于半导体存储器的测试电路(10)。 半导体存储器包括用于经由信号线(72)连接到冗余电路元件的存储器地址信号(66,68)的冗余解码器(70)。 可以根据故障电路元件的地址对冗余解码器(70)进行编程,使得当解码器(70)由存储器地址信号(66,68)寻址时,解码器(70)选择预定的冗余电路 元件。 测试电路(10)产生指示由解码器(70)选择的电路元件是冗余电路元件的输出信号(14)。 输出信号(14)被施加到由异常状态检测器(26)在测试模式中使能的指示器电路(16)。 指示电路(16)的输出(18)被施加到外部引脚(20)。

    SEMICONDUCTOR MEMORY CELL MARGIN TEST CIRCUIT
    2.
    发明申请
    SEMICONDUCTOR MEMORY CELL MARGIN TEST CIRCUIT 审中-公开
    半导体存储器存储器测试电路

    公开(公告)号:WO1982002792A1

    公开(公告)日:1982-08-19

    申请号:PCT/US1981000136

    申请日:1981-02-02

    发明人: MOSTEK CORP

    IPC分类号: G11C11/40

    CPC分类号: G11C29/50 G06F2201/81

    摘要: A margin test circuit (10) is provided for a semiconductor memory circuit having a plurality of memory cells (16). Each of the memory cells (16) in one row of cells (16) are interconnected to a word line (14). The margin test circuit (10) further includes a row decoder/driver (12) which receives a variable voltage (V u *) for changing the signal level stored within a memory cell (16) to thereby determine the marginal voltage level at which the memory cell (16) will maintain storage of a signal level. The variable voltage (V u *) is the semiconductor memory circuit main supply source (V u) in normal operation but can be forced to a different voltage during the margin test.

    摘要翻译: 为具有多个存储单元(16)的半导体存储器电路提供了裕量测试电路(10)。 一行单元(16)中的每个存储单元(16)互连到字线(14)。 边缘检验电路(10)还包括行解码器/驱动器(12),其接收用于改变存储在存储单元(16)内的信号电平的可变电压(V uC> u *),从而确定边际电压电平 存储单元(16)将保持信号电平的存储。 可变电压(V ucc> u *)是正常操作中的半导体存储器电路主电源(V ucc> u),但是在裕量测试期间可以被强制为不同的电压。