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    • 2. 发明授权
    • Semiconductor memory device
    • 半导体存储器件
    • US5381372A
    • 1995-01-10
    • US56919
    • 1993-05-05
    • Eiji KozukaNaokazu Miyawaki
    • Eiji KozukaNaokazu Miyawaki
    • G01R31/28G11C11/401G11C29/26G11C29/48H01L21/66H01L27/10G11C29/00
    • G11C29/48G11C29/26
    • A semiconductor memory device has a plurality of memory cell arrays; input and output sections each provided so as to correspond to each of the memory cell arrays; and an allocating section provided between the memory cell arrays and the input and output sections, for allocating one of the memory cell arrays to one of the input output sections in ordinary mode, and a plurality of the memory cell arrays to one of the input and output sections in test mode. In the operation test mode, since only a part of the input and output sections are used, it is possible to decrease the number of chips connected to the I/O pins (whose maximum number is limited) of the tester so as to be testable simultaneously, so that the number of chips whose operation tests can be implemented simultaneously can be increased, thus reducing the time required for the operation test of the memory device as a whole.
    • 半导体存储器件具有多个存储单元阵列; 每个所述输入和输出部分被提供以对应于每个所述存储单元阵列; 以及设置在所述存储单元阵列与所述输入和输出部分之间的分配部分,用于将所述存储单元阵列中的一个以普通模式分配到所述输入输出部分中的一个,以及将所述多个所述存储单元阵列分配给所述输入和 输出部分在测试模式。 在操作测试模式下,由于仅使用输入和输出部分的一部分,所以可以减少连接到测试仪的I / O引脚(其最大数量受限制)的芯片数量,以便可测试 同时,可以增加同时实现操作测试的芯片的数量,从而减少了整体上存储装置的操作测试所需的时间。
    • 4. 发明授权
    • Impedance control circuit for a semiconductor substrate
    • 用于半导体衬底的阻抗控制电路
    • US5270583A
    • 1993-12-14
    • US687188
    • 1991-04-18
    • Naokazu MiyawakiKiyoharu Murakami
    • Naokazu MiyawakiKiyoharu Murakami
    • H01L27/04G05F3/20G11C11/408H01L21/822H03K3/01
    • G05F3/205
    • The semiconductor circuit device comprises a substrate bias generating circuit, a substrate voltage detecting circuit, and a substrate impedance adjusting circuit. When the detected substrate voltage decreases below a predetermined level, the substrate impedance adjusting circuit forms a through route between a substrate voltage terminal and any given terminal higher in potential than the substrate voltage terminal, to increase the substrate voltage at high speed, thus stabilizing threshold voltages or operation limit voltages of device elements which are subjected to the influence of the substrate voltage. Further, when the substrate voltage returns to the predetermined level, the substrate impedance adjusting circuit cuts off the formed through route for reduction of power consumption.
    • 半导体电路器件包括衬底偏置产生电路,衬底电压检测电路和衬底阻抗调节电路。 当检测到的衬底电压降低到预定水平以下时,衬底阻抗调整电路在衬底电压端子和电压高于衬底电压端子的任何给定端子之间形成通路,以高速增加衬底电压,从而稳定阈值 受到基板电压影响的器件元件的电压或工作极限电压。 此外,当基板电压恢复到预定电平时,基板阻抗调节电路切断形成的通路以降低功耗。
    • 5. 发明授权
    • Substrate bias voltage generator circuit
    • 基板偏压发生电路
    • US5243228A
    • 1993-09-07
    • US865258
    • 1992-04-08
    • Keiji MaruyamaNaokazu Miyawaki
    • Keiji MaruyamaNaokazu Miyawaki
    • H01L27/04G05F3/20G11C11/408H01L21/822
    • G05F3/205
    • A substrate bias voltage generator circuit has a substrate bias voltage detector circuit, a substrate bias driver circuit, and a charge pump circuit. the substrate bias voltage detector circuit detects a substrate bias voltage applied to a semiconductor substrate and outputs a substrate bias voltage detection signal. The substrate bias detector circuit includes a P-channel transistor with a gate terminal and an N-channel transistor with a substrate terminal, both terminals being connected to the semiconductor substrate and the substrate bias voltage which is a back bias for the N-channel transistor. The substrate bias driver circuit is responsive to the substrate bias voltage detection signal outputted from the substrate bias voltage detector circuit, and outputs a drive signal when the absolute value of the substrate bias voltage is equal to or smaller than a predetermined value, and stops outputting the drive signal when the absolute value of the substrate bias voltage is larger than the predetermined value. The charge pump circuit is responsive to the drive signal from the substrate bias driver circuit, and generates the substrate bias voltage.
    • 衬底偏置电压发生器电路具有衬底偏置电压检测器电路,衬底偏置驱动器电路和电荷泵电路。 衬底偏置电压检测器电路检测施加到半导体衬底的衬底偏置电压并输出衬底偏置电压检测信号。 衬底偏置检测器电路包括具有栅极端子的P沟道晶体管和具有衬底端子的N沟道晶体管,两个端子连接到半导体衬底,并且衬底偏压作为N沟道晶体管的反偏压 。 衬底偏置驱动器电路响应于从衬底偏置电压检测器电路输出的衬底偏置电压检测信号,并且当衬底偏置电压的绝对值等于或小于预定值时输出驱动信号,并且停止输出 当衬底偏置电压的绝对值大于预定值时的驱动信号。 电荷泵电路响应于来自衬底偏置驱动器电路的驱动信号,并产生衬底偏置电压。