发明授权
- 专利标题: Semiconductor memory device and control method thereof
- 专利标题(中): 半导体存储器件及其控制方法
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申请号: US10404153申请日: 2003-04-02
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公开(公告)号: US06847540B2公开(公告)日: 2005-01-25
- 发明人: Yoshiharu Kato , Satoru Kawamoto
- 申请人: Yoshiharu Kato , Satoru Kawamoto
- 申请人地址: JP Kawasaki
- 专利权人: Fujitsu Limited
- 当前专利权人: Fujitsu Limited
- 当前专利权人地址: JP Kawasaki
- 代理机构: Arent Fox, PLLC
- 优先权: JP2001-96380 20010329
- 主分类号: G11C11/404
- IPC分类号: G11C11/404 ; G11C7/14 ; G11C7/22 ; G11C11/34 ; G11C11/407 ; G11C11/4074 ; G11C11/4076 ; G11C11/4099 ; H01L21/8242 ; H01L27/108 ; G11C11/24
摘要:
A semiconductor memory device, in which a cell plate potential does not fluctuate even when the device state is changed from a state without stored charge in all charge storage nodes of the cell capacitors at power-on to an access operation state, comprises NMOS transistors M1 to Mk for connecting a line VPR as a feeder for a reference voltage VPR from a reference voltage generation circuit with a line VCP as a feeder for a reference voltage VCP from the reference voltage generation circuit in each of cell blocks B1 to Bk. Gate terminals of the NMOS transistors M1 to Mk are connected to a common signal φCPR. The signal φCPR outputs a positive logical level at a predetermined time after power-on. By providing the NMOS transistors M1 to Mk for short-circuiting the line VPR with the line VCP in each of the cell blocks B1 to Bk, both lines are short-circuited in each of the cell blocks B1 to Bk.
公开/授权文献
- US20030202393A1 Semiconductor memory device and control method thereof 公开/授权日:2003-10-30
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