Semiconductor integrated circuit device
    12.
    发明授权
    Semiconductor integrated circuit device 有权
    半导体集成电路器件

    公开(公告)号:US07855593B2

    公开(公告)日:2010-12-21

    申请号:US12497982

    申请日:2009-07-06

    IPC分类号: G05F1/10 G05F3/02

    CPC分类号: G11C5/147

    摘要: A semiconductor integrated circuit device enhanced in design efficiency while achieving multi-functionalization and power saving is to be provided. The semiconductor integrated circuit device has first through third circuit blocks, and is placed in a first power supply state in which the operation of internal circuits in the first circuit block is guaranteed in accordance with an instruction from the third circuit block or a second power supply state in which the operation of the internal circuits is not guaranteed. The second circuit block has an input unit which receives signals supplied from the first circuit block, and the input unit of the second circuit block has an input circuit which, in accordance with a control signal sent from said third circuit block to said second circuit block, causes a specific signal level to be maintained in compliance with the operating voltage of the second circuit block irrespective of the signal supplied from the first circuit block when the third circuit block instructs the second power supply state to the first circuit block.

    摘要翻译: 提供一种在实现多功能化和省电的同时提高设计效率的半导体集成电路装置。 半导体集成电路装置具有第一至第三电路块,并且被置于第一电源状态,其中根据来自第三电路块或第二电源的指令保证第一电路块中的内部电路的操作 不能保证内部电路的运行状态。 第二电路块具有接收从第一电路块提供的信号的输入单元,并且第二电路块的输入单元具有输入电路,该输入电路根据从所述第三电路块发送到所述第二电路块的控制信号 当第三电路块向第一电路块指示第二电源状态时,使得与第二电路块的工作电压保持一定的特定信号电平,而与第一电路块所提供的信号无关。

    Semiconductor memory device
    13.
    发明授权
    Semiconductor memory device 有权
    半导体存储器件

    公开(公告)号:US07821814B2

    公开(公告)日:2010-10-26

    申请号:US12222753

    申请日:2008-08-15

    IPC分类号: G11C11/00 G11C5/14

    CPC分类号: G11C11/417 G11C5/14 G11C5/148

    摘要: When threshold voltages of constituent transistors are reduced in order to operate an SRAM circuit at a low voltage, there is a problem in that a leakage current of the transistors is increased and, as a result, electric power consumption when the SRAM circuit is not operated while storing data is increased. Therefore, there is provided a technique for reducing the leakage current of MOS transistors in SRAM memory cells MC by controlling a potential of a source line ssl of the driver MOS transistors in the memory cells.

    摘要翻译: 当降低构成晶体管的阈值电压以便在低电压下操作SRAM电路时,存在晶体管的漏电流增加的问题,结果是当SRAM电路不工作时的功耗 同时存储数据增加。 因此,提供了通过控制存储单元中的驱动器MOS晶体管的源极线ssl的电位来减小SRAM存储单元MC中的MOS晶体管的漏电流的技术。

    SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE
    15.
    发明申请
    SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE 有权
    半导体集成电路设备

    公开(公告)号:US20090267686A1

    公开(公告)日:2009-10-29

    申请号:US12497982

    申请日:2009-07-06

    IPC分类号: G05F1/10 G05F3/02

    CPC分类号: G11C5/147

    摘要: A semiconductor integrated circuit device enhanced in design efficiency while achieving multi-functionalization and power saving is to be provided. The semiconductor integrated circuit device has first through third circuit blocks, and is placed in a first power supply state in which the operation of internal circuits in the first circuit block is guaranteed in accordance with an instruction from the third circuit block or a second power supply state in which the operation of the internal circuits is not guaranteed. The second circuit block has an input unit which receives signals supplied from the first circuit block, and the input unit of the second circuit block has an input circuit which, in accordance with a control signal sent from said third circuit block to said second circuit block, causes a specific signal level to be maintained in compliance with the operating voltage of the second circuit block irrespective of the signal supplied from the first circuit block when the third circuit block instructs the second power supply state to the first circuit block.

    摘要翻译: 提供一种在实现多功能化和省电的同时提高设计效率的半导体集成电路装置。 半导体集成电路装置具有第一至第三电路块,并且被置于第一电源状态,其中根据来自第三电路块或第二电源的指令保证第一电路块中的内部电路的操作 不能保证内部电路的运行状态。 第二电路块具有接收从第一电路块提供的信号的输入单元,并且第二电路块的输入单元具有输入电路,该输入电路根据从所述第三电路块发送到所述第二电路块的控制信号 当第三电路块向第一电路块指示第二电源状态时,使得与第二电路块的工作电压保持一定的特定信号电平,而与第一电路块所提供的信号无关。

    Nonvolatile semiconductor memory
    16.
    发明授权
    Nonvolatile semiconductor memory 失效
    非易失性半导体存储器

    公开(公告)号:US07414909B2

    公开(公告)日:2008-08-19

    申请号:US11606025

    申请日:2006-11-30

    IPC分类号: G11C7/02

    CPC分类号: G11C7/14 G11C17/12

    摘要: There is provided a high-density mask ROM operable at a high speed. With the mask ROM, respective source lines are disposed so as to be shared by memory cells in respective columns adjacent to each other, and bit lines are disposed so as to correspond to the respective columns of the memory cells. Further, the dummy cells are disposed for the respective columns of the memory cells. The dummy cells are each made up of a series-circuit including a first switching transistor that is turned into the conducting state in response to a signal potential on a dummy word line (DWL), and a second switching transistor 17 for coupling an adjacent source line to the bit line corresponding thereto in response to a potential of the source line in a column corresponding thereto. The memory cells each are made up of one unit of a transistor and a data storage formed by mask wiring. At the time of reading data, a potential of the source line in a select column is caused to undergo a change, whereupon there occurs a potential difference between a pair made up of the bit line as selected to which the memory cells as selected are coupled, and a reference bit line with the dummy cells coupled thereto, so that it is possible to execute readout of data by detecting the potential difference.

    摘要翻译: 提供了可高速操作的高密度掩模ROM。 利用掩模ROM,各个源极线被布置成由彼此相邻的各个列中的存储单元共享,并且位线被布置为与存储单元的各个列对应。 此外,为存储单元的各列设置虚设单元。 虚拟单元各自由串联电路组成,串联电路包括响应于虚拟字线(DWL)上的信号电位而变为导通状态的第一开关晶体管,以及用于耦合相邻源极的第二开关晶体管17 响应于与其对应的列中的源极线的电位,对应于其的位线。 每个存储单元由晶体管的一个单元和由掩模布线形成的数据存储器构成。 在读取数据时,使选择列中的源极线的电位发生变化,由此选择由选择的存储器单元所耦合的位线组成的一对之间存在电位差 以及与其耦合的虚拟单元的参考位线,使得可以通过检测电位差来执行数据的读出。

    Semiconductor integrated circuit and data processing system
    18.
    发明授权
    Semiconductor integrated circuit and data processing system 有权
    半导体集成电路和数据处理系统

    公开(公告)号:US07254680B2

    公开(公告)日:2007-08-07

    申请号:US11641808

    申请日:2006-12-20

    IPC分类号: G06F12/00 G11C7/00

    摘要: To enhance the speed of first access (read access different in word line from the previous access) to a multi-bank memory, multi-bank memory macro structures are used. Data are held in a sense amplifier for every memory bank. When access is hit to the held data, data latched by the sense amplifier are output to thereby enhance the speed of first access to the memory macro structures. Namely, each memory bank is made to function as a sense amplifier cache. To enhance the hit ratio of such a sense amplifier cache more greatly, an access controller self-prefetches the next address (an address to which a predetermined offset has been added) after access to a memory macro structure so that data in the self-prefetched address are preread by a sense amplifier in another memory bank.

    摘要翻译: 为了提高第一次访问的速度(从先前访问的字线读取访问)到多存储体存储器,使用多存储体存储器宏结构。 数据保存在每个存储体的读出放大器中。 当对保持的数据进行访问时,输出由读出放大器锁存的数据,从而提高对存储器宏结构的首次访问的速度。 即,使每个存储体用作读出放大器高速缓存。 为了更好地提高这种感测放大器高速缓存的命中率,访问控制器在访问存储器宏结构之后自我预取下一个地址(已经添加了预定偏移量的地址),以便自我预取中的数据 地址由另一个存储体中的读出放大器预读。

    Nonvolatile semiconductor memory
    19.
    发明申请
    Nonvolatile semiconductor memory 失效
    非易失性半导体存储器

    公开(公告)号:US20070127302A1

    公开(公告)日:2007-06-07

    申请号:US11606025

    申请日:2006-11-30

    IPC分类号: G11C7/02

    CPC分类号: G11C7/14 G11C17/12

    摘要: There is provided a high-density mask ROM operable at a high speed. With the mask ROM, respective source lines are disposed so as to be shared by memory cells in respective columns adjacent to each other, and bit lines are disposed so as to correspond to the respective columns of the memory cells. Further, the dummy cells are disposed for the respective columns of the memory cells. The dummy cells are each made up of a series-circuit including a first switching transistor that is turned into the conducting state in response to a signal potential on a dummy word line (DWL), and a second switching transistor 17 for coupling an adjacent source line to the bit line corresponding thereto in response to a potential of the source line in a column corresponding thereto. The memory cells each are made up of one unit of a transistor and a data storage formed by mask wiring. At the time of reading data, a potential of the source line in a select column is caused to undergo a change, whereupon there occurs a potential difference between a pair made up of the bit line as selected to which the memory cells as selected are coupled, and a reference bit line with the dummy cells coupled thereto, so that it is possible to execute readout of data by detecting the potential difference.

    摘要翻译: 提供了可高速操作的高密度掩模ROM。 利用掩模ROM,各个源极线被布置成由彼此相邻的各个列中的存储单元共享,并且位线被布置为与存储单元的各个列对应。 此外,为存储单元的各列设置虚设单元。 虚拟单元各自由串联电路组成,串联电路包括响应于虚拟字线(DWL)上的信号电位而变为导通状态的第一开关晶体管,以及用于耦合相邻源极的第二开关晶体管17 响应于与其对应的列中的源极线的电位,对应于其的位线。 每个存储单元由晶体管的一个单元和由掩模布线形成的数据存储器构成。 在读取数据时,使选择列中的源极线的电位发生变化,由此选择由所选择的存储器单元耦合到的位线构成的一对之间存在电位差 以及与其耦合的虚拟单元的参考位线,使得可以通过检测电位差来执行数据的读出。