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    • 25. 发明授权
    • Substrate bias generator in a dynamic random access memory with
auto/self refresh functions and a method of generating a substrate bias
therein
    • 具有自动/自刷新功能的动态随机存取存储器中的衬底偏置发生器及其中产生衬底偏置的方法
    • US4961167A
    • 1990-10-02
    • US381347
    • 1989-07-18
    • Masaki KumanoyaYasuhiro KonishiKatsumi DosakaTakahiro KomatsuYoshinori Inoue
    • Masaki KumanoyaYasuhiro KonishiKatsumi DosakaTakahiro KomatsuYoshinori Inoue
    • G11C11/4074
    • G11C11/4074
    • A dynamic random access memory with self-refresh function, which includes a substrate bias generator (100) adapted to be intermittently driven to apply a bias potential to a semiconductor substrate (15). This memory device comprises a circuit (91) for generating an internal refresh instruction signal (.phi..sub.S) in response to an external refresh instruction signal, a circuit (92, 93) which, in response to the internal refresh instruction signal, generates a refresh enable signal (.phi..sub.R) intermittently at a predetermined interval, a circuit (94, 95, 96, 98) which, in response to the refresh enable signal, refreshes data in the memory cells, and a circuit (99) which, in response to the internal refresh instruction signal and refresh enable signal, activates the substrate bias generator in the same cycle as the cycle of generation of the refresh enable signal and only for a time shorter than the cycle of generation of the refresh enable signal. The above construction contributes to a reduced power consumption in the dynamic random access memory.
    • 一种具有自刷新功能的动态随机存取存储器,其包括适于被间歇地驱动以向半导体衬底(15)施加偏置电位的衬底偏置发生器(100)。 该存储装置包括用于响应于外部刷新指令信号产生内部刷新指令信号(phi S)的电路(91),响应于内部刷新指令信号产生刷新的电路(92,93) 使能信号(phi R)以预定的间隔间歇地连接到响应于刷新使能信号刷新存储器单元中的数据的电路(94,95,96,98)和响应于电路(99)的电路(99) 对于内部刷新指令信号和刷新使能信号,在与产生刷新使能信号的周期相同的周期中,仅在比生成刷新使能信号的周期短的时间内激活衬底偏置发生器。 上述结构有助于动态随机存取存储器中的功耗降低。
    • 26. 发明授权
    • Substrate bias potential generator of a semiconductor integrated circuit
device and a generating method therefor
    • 半导体集成电路器件的衬底偏置电位发生器及其生成方法
    • US4961007A
    • 1990-10-02
    • US337218
    • 1989-04-12
    • Masaki KumanoyaYasuhiro KonishiKatsumi DosakaTakahiro KomatsuYouichi Tobita
    • Masaki KumanoyaYasuhiro KonishiKatsumi DosakaTakahiro KomatsuYouichi Tobita
    • G11C11/408G05F3/20H01L21/822H01L21/8242H01L27/04H01L27/10H01L27/108
    • G05F3/205H02M3/07
    • A substrate bias potential generator for biasing a semiconductor substrate to a predetermined potential includes first and second substrate bias generating circuits which operate alternatively according to the potential of the substrate, whereby consumption of power in the substrate bias potential generator is reduced. The alternative operation of the bias generating circuits each activated by a pulse signal train is performed by using a first insulated gate transistor having a gate electrode connected to the semiconductor substrate, a second insulated gate transistor having a gate electrode for receiving the reference potential, an amplifier for differentially amplifying outputs of the first and second insulated gate transistors, an insulated gate transistor for charging an output of the amplifier to a predetermined potential when the amplifier is activated, and a circuit for transmitting the output of the differential amplifier to the first and second bias potential generating circuits. The differential amplifier is activated in response to an activation signal of a pulse train whereby an activation signal corresponding to the pulse train is transmitted to either substrate bias potential generating circuit.
    • 用于将半导体衬底偏置到预定电位的衬底偏置电位发生器包括根据衬底的电位交替地操作的第一和第二衬底偏置产生电路,由此降低衬底偏置电位发生器中的功率消耗。 通过使用具有连接到半导体衬底的栅电极的第一绝缘栅极晶体管,具有用于接收参考电位的栅电极的第二绝缘栅极晶体管,执行由脉冲信号列激活的偏置产生电路的替代操作, 放大器,用于差分放大第一和第二绝缘栅极晶体管的输出;绝缘栅极晶体管,用于在放大器被激活时将放大器的输出充电到预定电位;以及电路,用于将差分放大器的输出传输到第一和第二绝缘栅极晶体管, 第二偏置电位发生电路。 差分放大器响应于脉冲串的激活信号被激活,由此将对应于脉冲串的激活信号传输到任一衬底偏置电位产生电路。