发明授权
- 专利标题： Semiconductor memory device having a refresh operation
- 专利标题（中）： 具有刷新操作的半导体存储器件
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申请号： US09536988申请日： 2000-03-29
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公开(公告)号： US06535950B1公开(公告)日： 2003-03-18
- 发明人: Akihiro Funyu , Shinya Fujioka , Hitoshi Ikeda , Takaaki Suzuki , Masao Taguchi , Kimiaki Satoh , Kotoku Sato , Yasurou Matsuzaki
- 申请人： Akihiro Funyu , Shinya Fujioka , Hitoshi Ikeda , Takaaki Suzuki , Masao Taguchi , Kimiaki Satoh , Kotoku Sato , Yasurou Matsuzaki
- 优先权： JP11-163461 19990610
- 主分类号： G11C114093
- IPC分类号： G11C114093
摘要：
A semiconductor memory device, such as a DRAM, which needs to be refreshed for retaining data, is provided with a storing portion for storing data therein, and a busy signal outputting portion outputting a busy signal during the refresh operation.
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