发明授权
- 专利标题: Semiconductor memory device and semiconductor integrated circuit
- 专利标题(中): 半导体存储器件和半导体集成电路
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申请号: US13243312申请日: 2011-09-23
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公开(公告)号: US08422267B2公开(公告)日: 2013-04-16
- 发明人: Shunichi Iwanari , Yasuo Murakuki
- 申请人: Shunichi Iwanari , Yasuo Murakuki
- 申请人地址: JP Osaka
- 专利权人: Panasonic Corporation
- 当前专利权人: Panasonic Corporation
- 当前专利权人地址: JP Osaka
- 代理机构: McDermott Will & Emery LLP
- 优先权: JP2009-126244 20090526
- 主分类号: G11C11/22
- IPC分类号: G11C11/22
摘要:
A semiconductor memory device includes a plurality of memory cells connected to a common bit line, a plurality of select lines each configured to select at least one of the memory cells, a plurality of drive circuits each configured to drive at least one of the select lines, a sense amplifier configured to amplify a voltage occurring at the bit line depending on data stored in the selected memory cell. A memory region where the memory cells are provided has a first region and a second region. When the first region is read, a larger number of the select lines are simultaneously driven by the corresponding common drive circuit than those in the second region, and a larger number of the memory cells are simultaneously selected than those in the second region.
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