发明授权
US08014197B2 System and method for programming cells in non-volatile integrated memory devices
有权
用于在非易失性集成存储器件中编程单元的系统和方法
- 专利标题: System and method for programming cells in non-volatile integrated memory devices
- 专利标题(中): 用于在非易失性集成存储器件中编程单元的系统和方法
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申请号: US12604904申请日: 2009-10-23
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公开(公告)号: US08014197B2公开(公告)日: 2011-09-06
- 发明人: Nima Mokhlesi , Daniel C. Guterman
- 申请人: Nima Mokhlesi , Daniel C. Guterman
- 申请人地址: US TX Plano
- 专利权人: SanDisk Technologies Inc.
- 当前专利权人: SanDisk Technologies Inc.
- 当前专利权人地址: US TX Plano
- 代理机构: Davis Wright Tremaine LLP
- 主分类号: G11C11/34
- IPC分类号: G11C11/34
摘要:
A system and method for quickly and efficiently programming hard-to-program storage elements in non-volatile integrated memory devices is presented. A number of storage elements are simultaneously subjected to a programming process with the current flowing through the storage elements limited to a first level. As a portion of these storage elements reach a prescribed state, they are removed from the set of cells being programmed and the current limit on the elements that continue to be programmed is raised. The current level in these hard-to-program cells can be raised to a second, higher limit or unregulated. According to another aspect, during a program operation the current limit allowed for a cell depends upon the target state to which it is to be programmed.
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