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    • 5. 发明授权
    • Semiconductor integrated circuit device
    • 半导体集成电路器件
    • US07855593B2
    • 2010-12-21
    • US12497982
    • 2009-07-06
    • Yuri AzumaYoshihiko YasuYasuto IgarashiTakashi KuraishiKazumasa Yanagisawa
    • Yuri AzumaYoshihiko YasuYasuto IgarashiTakashi KuraishiKazumasa Yanagisawa
    • G05F1/10G05F3/02
    • G11C5/147
    • 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.
    • 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。
    • 8. 发明申请
    • SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE
    • 半导体集成电路设备
    • US20090267686A1
    • 2009-10-29
    • US12497982
    • 2009-07-06
    • Yuri AzumaYoshihiko YasuYasuto IgarashiTakashi KuraishiKazumasa Yanagisawa
    • Yuri AzumaYoshihiko YasuYasuto IgarashiTakashi KuraishiKazumasa Yanagisawa
    • G05F1/10G05F3/02
    • G11C5/147
    • 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.
    • 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。
    • 9. 发明授权
    • Nonvolatile semiconductor memory
    • 非易失性半导体存储器
    • US07414909B2
    • 2008-08-19
    • US11606025
    • 2006-11-30
    • Kazuyoshi OkamotoKazumasa Yanagisawa
    • Kazuyoshi OkamotoKazumasa Yanagisawa
    • G11C7/02
    • G11C7/14G11C17/12
    • 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.
    • 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。