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    • 17. 发明申请
    • SEMICONDUCTOR MEMORY DEVICE AND METHOD FOR CONTROLLING THE SAME
    • 半导体存储器件及其控制方法
    • US20110255360A1
    • 2011-10-20
    • US13070034
    • 2011-03-23
    • Hiroyuki TAKAHASHI
    • Hiroyuki TAKAHASHI
    • G11C7/00
    • G11C11/406G11C11/40615G11C2211/4062
    • A semiconductor memory device includes a memory cell array having plural memory cells that require a refresh operation when retaining data; a read/write control unit that performs read-access or write-access of memory cell address specified for the memory cell array based on instructions from the outside; a refresh control unit that performs hidden-refresh of memory cells without control from the outside; and a schedule control unit that makes the refresh control unit perform hidden-refresh after the read/write control unit read-accesses the memory cell array, and that also makes the refresh control unit perform hidden-refresh before the read/write access control unit performs write-access.
    • 半导体存储器件包括具有多个存储单元的存储单元阵列,当存储数据时需要刷新操作; 读/写控制单元,其基于来自外部的指令执行对存储单元阵列指定的存储单元地址的读取或写入; 刷新控制单元,其不从外部进行控制地进行存储单元的隐藏刷新; 以及调度控制单元,其使刷新控制单元在读/写控制单元读取存储单元阵列之后执行隐藏刷新,并且还使刷新控制单元在读/写访问控制单元之前进行隐藏刷新 执行写入访问。
    • 19. 发明申请
    • SEMICONDUCTOR MEMORY DEVICE
    • 半导体存储器件
    • US20110103124A1
    • 2011-05-05
    • US12916768
    • 2010-11-01
    • Hiroyuki TAKAHASHIMasahiro Yoshida
    • Hiroyuki TAKAHASHIMasahiro Yoshida
    • G11C7/12G11C11/4063G11C5/06
    • G11C7/1048G11C7/12G11C7/227G11C11/4094G11C11/4096G11C2207/002
    • A semiconductor memory device has: memory blocks; and a local bus connected to the memory blocks. Each memory block has: switches respectively provided between bit line pairs and the local bus and each of which is turned ON in response to a selection signal; a dummy local bus; first and second control circuits. The local bus and the dummy local bus are precharged to a first potential before a read operation. In the read operation, the first control circuit outputs the selection signal to a selected switch to electrically connect a selected bit line pair and the local bus, while the second control circuit supplies a second potential lower than the first potential to the dummy local bus. The first control circuit stops outputting the selection signal when a potential of the dummy local bus is decreased to a predetermined set potential that is between the first and second potentials.
    • 半导体存储器件具有:存储器块; 以及连接到存储器块的本地总线。 每个存储块具有分别设置在位线对和本地总线之间的开关,并且每个开关响应于选择信号而导通; 虚拟当地巴士 第一和第二控制电路。 在读操作之前,本地总线和虚拟本地总线被预先充电到第一个电位。 在读取操作中,第一控制电路将选择信号输出到所选择的开关,以电连接所选位线对和局部总线,而第二控制电路将低于第一电位的第二电位提供给虚拟本地总线。 当虚拟局部总线的电位降低到第一和第二电位之间的预定设定电位时,第一控制电路停止输出选择信号。
    • 20. 发明申请
    • SEMICONDUCTOR INTEGRATED DEVICE
    • 半导体集成器件
    • US20100290300A1
    • 2010-11-18
    • US12769141
    • 2010-04-28
    • Hiroyuki TAKAHASHITetsuo Fukushi
    • Hiroyuki TAKAHASHITetsuo Fukushi
    • G11C7/00G11C7/06
    • G11C11/4085G11C7/062G11C7/12G11C11/4091G11C11/4094G11C11/4097
    • Provided is a semiconductor integrated device including a semiconductor memory circuit and a peripheral circuit of the semiconductor memory circuit. The peripheral circuit includes a first transistor having a first voltage as a breakdown voltage of a gate oxide film. The semiconductor memory circuit includes a pair of bit lines, one of the pair of bit lines being connected to a gate transistor of a memory cell, and a precharge circuit that includes a transistor having a breakdown voltage substantially equal to that of the first transistor, and precharges the pair of bit lines to a predetermined voltage in response to an activation signal. The activation signal of the precharge circuit is a second voltage higher than the first voltage.
    • 提供一种包括半导体存储电路和半导体存储电路的外围电路的半导体集成器件。 外围电路包括具有作为栅氧化膜的击穿电压的第一电压的第一晶体管。 半导体存储器电路包括一对位线,一对位线中的一个连接到存储单元的栅极晶体管,以及预充电电路,其包括具有基本上等于第一晶体管的击穿电压的晶体管, 并且响应于激活信号将一对位线预充电到预定电压。 预充电电路的激活信号是比第一电压高的第二电压。