发明授权
- 专利标题： Synchronous semiconductor memory device including internal clock signal generation circuit that generates an internal clock signal synchronizing in phase with external clock signal at high precision
- 专利标题（中）： 同步半导体存储器件包括内部时钟信号产生电路，其产生与外部时钟信号同步高精度的内部时钟信号
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申请号： US53058申请日： 1998-04-01
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公开(公告)号： US5940344A公开(公告)日： 1999-08-17
- 发明人: Yasumitsu Murai , Wataru Sakamoto , Hisashi Iwamoto
- 申请人： Yasumitsu Murai , Wataru Sakamoto , Hisashi Iwamoto
- 申请人地址： JPX Tokyo JPX Tokyo
- 专利权人： Mitsubishi Denki Kabushiki Kaisha,Mitsubishi Electric Engineering Company Limited
- 当前专利权人： Mitsubishi Denki Kabushiki Kaisha,Mitsubishi Electric Engineering Company Limited
- 当前专利权人地址： JPX Tokyo JPX Tokyo
- 优先权： JPX9-278734 19971013
- 主分类号： G11C11/407
- IPC分类号： G11C11/407 ; G11C7/22 ; G11C8/00
摘要：
In an internal clock signal generation circuit, a phase comparator for detecting phase difference between an external clock signal and an internal clock signal includes a transistor and a capacitor with respect to a signal line through which a clock signal corresponding to the external clock signal is transmitted, and a transistor and a capacitor with respect to a signal line through which a clock signal corresponding to the internal clock signal is transmitted. The rising timing of the signal having a more lagging phase of the signals of the two signal lines becomes more gentle. As a result, the phase difference is increased, and the phase comparator can compare the phase at high precision.
公开/授权文献
- USD384576S Wall mounted hanger for law enforcement equipment 公开/授权日：1997-10-07
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