发明授权
US06920074B2 Method for reading a memory cell in a semiconductor memory, and semiconductor memory
失效
用于读取半导体存储器中的存储单元的方法和半导体存储器
- 专利标题: Method for reading a memory cell in a semiconductor memory, and semiconductor memory
- 专利标题(中): 用于读取半导体存储器中的存储单元的方法和半导体存储器
-
申请号: US10642906申请日: 2003-08-18
-
公开(公告)号: US06920074B2公开(公告)日: 2005-07-19
- 发明人: Helmut Fischer , Kazimierz Szczypinski
- 申请人: Helmut Fischer , Kazimierz Szczypinski
- 申请人地址: DE Munich
- 专利权人: Infineon Technologies AG
- 当前专利权人: Infineon Technologies AG
- 当前专利权人地址: DE Munich
- 代理商 Laurence A. Greenberg; Werner H. Stemer; Ralph E. Locher
- 优先权: DE10107314 20010216
- 主分类号: G11C11/409
- IPC分类号: G11C11/409 ; G11C7/06 ; G11C11/401 ; G11C7/00
摘要:
In a semiconductor memory, there is capacitive coupling between bit lines that largely run in parallel. Outer sections of the bit lines are connected via respective switches to a sense amplifier arranged between the switches. When a memory cell is being read, the capacitive interference by other bit lines that are not coupled to the memory cell being read is kept as low as possible before the start of amplification by the sense amplifier by turning on the switches in that bit line. During the amplification phase, the remote outer section of that bit line is disconnected using the appropriate switch. In one embodiment, the capacitance of the bit line that is not connected to the memory cell to be read is increased further by additionally activating a precharging circuit.
公开/授权文献
信息查询
IPC分类: