发明授权
- 专利标题: Nonvolatile semiconductor memory device
- 专利标题(中): 非易失性半导体存储器件
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申请号: US13234796申请日: 2011-09-16
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公开(公告)号: US08331137B2公开(公告)日: 2012-12-11
- 发明人: Akira Takashima , Reika Ichihara
- 申请人: Akira Takashima , Reika Ichihara
- 申请人地址: JP Tokyo
- 专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2011-063352 20110322
- 主分类号: G11C11/00
- IPC分类号: G11C11/00
摘要:
According to one embodiment, a nonvolatile semiconductor memory device includes a memory cell includes a variable resistance element and a capacitor connected in series between first and second conductive lines, and a control circuit applying one of first and second voltage pulses to the memory cell. The capacitor is charged by a leading edge of one of the first and second voltage pulses, and discharged a trailing edge of one of the first and second voltage pulses. The control circuit makes waveforms of the trailing edges of the first and second voltage pulses be different, changes a resistance value of the variable resistance element from a first resistance value to a second resistance value by using the first voltage pulse, and changes the resistance value of the variable resistance element from the second resistance value to the first resistance value by using the second voltage pulse.
公开/授权文献
- US20120243293A1 NONVOLATILE SEMICONDUCTOR MEMORY DEVICE 公开/授权日:2012-09-27
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