发明公开
EP0760515A3 Method for reading and restoring data in a data storage element
失效
数据读取和-wiederherstellungsverfahren数据存储元件
- 专利标题: Method for reading and restoring data in a data storage element
- 专利标题(中): 数据读取和-wiederherstellungsverfahren数据存储元件
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申请号: EP96113642.1申请日: 1996-08-26
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公开(公告)号: EP0760515A3公开(公告)日: 1998-01-07
- 发明人: Tai, Jy-Der D.
- 申请人: MOTOROLA, INC.
- 申请人地址: 1303 East Algonquin Road Schaumburg, IL 60196 US
- 专利权人: MOTOROLA, INC.
- 当前专利权人: MOTOROLA, INC.
- 当前专利权人地址: 1303 East Algonquin Road Schaumburg, IL 60196 US
- 代理机构: Spaulding, Sarah Jane
- 优先权: US522477 19950831
- 主分类号: G11C11/22
- IPC分类号: G11C11/22
摘要:
A method for reading and restoring data in a FERAM (10) is provided. The FERAM (10) comprises a FET (11) and a ferroelectric capacitor (12). The FET (11) has a gate connected to a word line (14), a source coupled to a plate line (15) via the ferroelectric capacitor (12), and a drain connected to a bit line (16). The reading process begins by placing a predetermined amount of charge in a bit line capacitor (17), which in turn charges the ferroelectric capacitor (12) after the FET (11) is switched on, resulting in a voltage drop determined by data stored in the FERAM (10) at the bit line (16). A sense amplifier (18) adjusts the voltage at the bit line (16) accordingly to read data from the FERAM (10). Applying a voltage at the plate line (15) and switching the FET (11) off restore the data to the FERAM (10).
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