发明授权
- 专利标题： Semiconductor memory with automatic refresh means
- 专利标题（中）： 具有自动刷新功能的半导体存储器
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申请号： US76174申请日： 1987-07-21
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公开(公告)号： US4747082A公开(公告)日： 1988-05-24
- 发明人: Osamu Minato , Toshiaki Masuhara , Katsuhiro Shimohigashi , Shoji Hanamura , Shigeru Honjyo , Nobuyuki Moriwaki , Fumio Kojima
- 申请人： Osamu Minato , Toshiaki Masuhara , Katsuhiro Shimohigashi , Shoji Hanamura , Shigeru Honjyo , Nobuyuki Moriwaki , Fumio Kojima
- 申请人地址： JPX Tokyo JPX Tokyo
- 专利权人： Hitachi Ltd.,Hitachi VLSI Eng. Corp.
- 当前专利权人： Hitachi Ltd.,Hitachi VLSI Eng. Corp.
- 当前专利权人地址： JPX Tokyo JPX Tokyo
- 优先权： JPX59-249551 19841128; JPX59-249552 19841128; JPX61-169693 19860721
- 主分类号： G11C11/406
- IPC分类号： G11C11/406 ; G11C8/00
摘要：
A semiconductor memory is provided with automatic refresh means including a timer, a refresh counter and a refresh buffer each formed on a semiconductor chip mounted with an asynchronous memory, for automatically performing a periodic refresh operation on the basis of a basic clock signal which is generated in response to the detection of a logical change in the output of the refresh counter. The automatic refresh counter includes means for performing one of a read operation and a write operation which are based upon a regular address signal asynchronous with the periodic refresh operation, in preference to the periodic refresh operation.
公开/授权文献
- USD397310S Pendant 公开/授权日：1998-08-25
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