发明授权
- 专利标题: Semiconductor memory and system
- 专利标题(中): 半导体存储器和系统
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申请号: US12755002申请日: 2010-04-06
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公开(公告)号: US08243500B2公开(公告)日: 2012-08-14
- 发明人: Yasumitsu Sakai
- 申请人: Yasumitsu Sakai
- 申请人地址: JP Yokohama
- 专利权人: Fujitsu Semiconductor Limited
- 当前专利权人: Fujitsu Semiconductor Limited
- 当前专利权人地址: JP Yokohama
- 代理机构: Arent Fox LLP
- 优先权: JP2009-093990 20090408
- 主分类号: G11C11/00
- IPC分类号: G11C11/00
摘要:
A semiconductor memory has a short transistor coupling complementary storage nodes of a latch circuit of a memory cell. A transfer transistor and the short transistor have a diffusion layer in common coupled to one of the storage nodes. The short transistor and a driver transistor have a diffusion layer in common coupled to the other storage node. The transfer transistor, the short transistor, and the driver transistor are continuously disposed via the diffusion layers in common, and thereby, variation of characteristics of the transfer transistor can be prevented. Accordingly, it may be possible to prevent that current supplying ability of the transfer transistor changes depending on a layout in the memory cell, and that an operation margin of the memory cell deteriorates.
公开/授权文献
- US20100259972A1 SEMICONDUCTOR MEMORY AND SYSTEM 公开/授权日:2010-10-14
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