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    • 2. 发明授权
    • Dynamic semiconductor memory device and method for controllig the
precharge/refresh and access modes thereof
    • 动态半导体存储器件和用于控制其预充电/刷新和存取模式的方法
    • US4907199A
    • 1990-03-06
    • US271489
    • 1988-11-15
    • Katsumi DosakaMasaki KumanoyaYasuhiro KonishiHiroyuki YamasakiTakahiro Komatsu
    • Katsumi DosakaMasaki KumanoyaYasuhiro KonishiHiroyuki YamasakiTakahiro Komatsu
    • G11C11/409G11C11/403G11C11/406G11C11/4094
    • G11C11/4094G11C11/406
    • A dynamic semiconductor memory device is divided into a plurality of blocks. An operation of the semiconductor memory device is in either of a normal mode and a refresh mode, depending on the level of a refresh signal. In the normal mode, at an off time period, a potential on a bit line pair is equalized and a precharge potential is applied to the bit line pair. At the access time, equalizing of the potential on the bit line pair and supply of the precharge potential are stopped in a selected block and then, a word line driving signal is raised. On the other hand, in the refresh mode, at the off time period, the potential on the bit line pair is held at "H" and "L" levels by a sense amplifier, so that the potential on the bit line pair is not equalized and the precharge potential is not supplied. On this occasion, a precharge potential generating circuit is electrically disconnected from a power supply. At the time of refresh operation, the sense amplifier is rendered inactive in the selected block, so that the potential on the bit line pair is equalized and then, the word line driving signal is raised.
    • 动态半导体存储器件被分成多个块。 根据刷新信号的电平,半导体存储器件的操作是正常模式和刷新模式。 在正常模式下,在关闭时间段,位线对上的电位被均衡,并且预充电电位被施加到位线对。 在访问时间,在所选择的块中停止位线对上的电位的均衡和预充电电势的供给,然后提高字线驱动信号。 另一方面,在刷新模式下,在关闭时间段,位线对上的电位由读出放大器保持在“H”和“L”电平,使得位线对上的电位不是 均衡,不提供预充电电位。 在这种情况下,预充电电位产生电路与电源电气断开。 在刷新操作时,读出放大器在所选择的块中变为无效,使位线对上的电位相等,然后提高字线驱动信号。
    • 5. 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。
    • 6. 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。
    • 7. 发明授权
    • Dynamic-type semiconductor memory device operable in test mode and
method of testing functions thereof
    • 在测试模式下可操作的动态半导体存储器件及其功能的测试方法
    • US5208778A
    • 1993-05-04
    • US739736
    • 1991-07-30
    • Masaki KumanoyaKatsumi DosakaYasuhiro KonishiTakahiro KomatsuYoshinori Inoue
    • Masaki KumanoyaKatsumi DosakaYasuhiro KonishiTakahiro KomatsuYoshinori Inoue
    • G11C29/36
    • G11C29/36
    • A dynamic-type semiconductor memory device has a test mode of simultaneously carrying out functional testing on a plurality of bits of memory cells. In data writing in the test mode, data inverted from the write-in data is written in at least a 1-bit memory cell out of the plurality of bits of memory cells selected simultaneously, and the same data as the write-in data is written in the remaining memory cells. In data reading in the test mode, the data of those of the memory cells selected simultaneously, in which the inverted data is written are inverted and read, while the data of the remaining memory cells are read as they are. Logic processing is carried out on the read-out data of the plurality of bits, so that a logic value indicating acceptability of the semiconductor memory device is output, depending on a result of determination as to whether or not the read-out data is the same as each other.
    • 动态型半导体存储器件具有在多个位的存储单元上同时执行功能测试的测试模式。 在测试模式下的数据写入中,从写入数据反转的数据被写入到同时选择的多个存储单元中的至少1位存储单元中,与写入数据相同的数据是 写在剩余的存储单元中。 在测试模式下的数据读取中,将反转数据写入的同时选择的存储单元的数据进行反转和读取,而剩余存储单元的数据原样读取。 对多个位的读出数据执行逻辑处理,从而根据关于读出的数据是否为0的确定结果输出表示半导体存储器件的可接受性的逻辑值 相同。
    • 8. 发明授权
    • Semiconductor memory device having shared sense amplifier and operating
method thereof
    • 具有共享读出放大器的半导体存储器件及其操作方法
    • US5014246A
    • 1991-05-07
    • US435901
    • 1989-11-14
    • Takahiro KomatsuMasaki KumanoyaYasuhiro KonishiKatsumi DosakaYoshinori Inoue
    • Takahiro KomatsuMasaki KumanoyaYasuhiro KonishiKatsumi DosakaYoshinori Inoue
    • G11C11/401G11C11/409G11C11/4091
    • G11C11/4091
    • A memory cell array (10) is divided into four blocks. Each block comprises a memory cell array block (10aand a memory cell array block (10b). A sense amplifier block (20) is disposed between the memory cell array blocks (10a) and (10b). Each sense amplifier block (20) is connected to the memory cell array blocks (10a) and (10b) via switching circuits (80a, 80b), respectively. Four decoders (51) are provided corresponding to the four blocks. The four decoders (51) are commonly provided with a driver (52) generating a high level driving signal. Each decoder (51) is responsive to an address signal for supplying a driving signal from the driver (52) to either one of the switching circuits (80a, 80b) and for applying a ground potential to the other one of the circuits. Accordingly, the sense amplifier block (20) is connected to either one of the memory cell array blocks (10a, 10b ).
    • 存储单元阵列(10)被分成四个块。 每个块包括存储单元阵列块(10a和存储单元阵列块),读出放大器块(20)设置在存储单元阵列块(10a)和(10b)之间,每个读出放大器块(20)是 分别经由开关电路(80a,80b)连接到存储单元阵列块(10a)和(10b),四个解码器(51)分别对应于四个块,四个解码器(51)通常配置有驱动器 (52)产生高电平驱动信号,每个解码器(51)响应于地址信号,用于将来自驱动器(52)的驱动信号提供给开关电路(80a,80b)中的任一个并且用于施加地电位 因此,读出放大器块(20)连接到存储单元阵列块(10a,10b)中的任意一个。