发明授权
- 专利标题: Semiconductor memory device
- 专利标题(中): 半导体存储器件
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申请号: US12603879申请日: 2009-10-22
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公开(公告)号: US08045409B2公开(公告)日: 2011-10-25
- 发明人: Takuya Hirota , Takao Yanagida
- 申请人: Takuya Hirota , Takao Yanagida
- 申请人地址: JP Kanagawa
- 专利权人: Renesas Electronics Corporation
- 当前专利权人: Renesas Electronics Corporation
- 当前专利权人地址: JP Kanagawa
- 代理机构: Sughrue Mion, PLLC
- 优先权: JP2008-275424 20081027
- 主分类号: G11C7/00
- IPC分类号: G11C7/00
摘要:
A semiconductor memory device includes a plurality of memory cells that are arranged at intersections of a word line with bit line pairs, a precharge circuit that is arranged for each of the bit line pairs and is configured to precharge each of the bit line pairs, and a Y-switch circuit that is arranged for each of the bit line pairs and is configured to select each of the bit line pairs. The semiconductor memory device further includes a mode switching unit that switches the normal mode and the test mode in accordance with a mode selection signal that is externally supplied, a plurality of individual control units that control operation of each of the precharge circuits in accordance with operation of each of the Y-switch circuits in the normal mode, and a block control unit that collectively turns off all of the precharge circuits in the test mode.
公开/授权文献
- US20100103756A1 SEMICONDUCTOR MEMORY DEVICE 公开/授权日:2010-04-29
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