发明授权
- 专利标题: Methods and apparatus for programming multiple program values per signal level in flash memories
- 专利标题(中): 闪存中每个信号电平编程多个程序值的方法和装置
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申请号: US13001295申请日: 2009-07-21
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公开(公告)号: US08634250B2公开(公告)日: 2014-01-21
- 发明人: Erich F. Haratsch , Milos Ivkovic , Victor Krachkovsky , Nenad Miladinovic , Andrei Vityaev , Johnson Yen
- 申请人: Erich F. Haratsch , Milos Ivkovic , Victor Krachkovsky , Nenad Miladinovic , Andrei Vityaev , Johnson Yen
- 申请人地址: US CA San Jose
- 专利权人: LSI Corporation
- 当前专利权人: LSI Corporation
- 当前专利权人地址: US CA San Jose
- 代理机构: Ryan, Mason & Lewis, LLP
- 国际申请: PCT/US2009/051314 WO 20090721
- 国际公布: WO2010/011692 WO 20100128
- 主分类号: G11C11/34
- IPC分类号: G11C11/34
摘要:
Methods and apparatus are provided for programming multiple program values per signal level in flash memories. A flash memory device having a plurality of program values is programmed by programming the flash memory device for a given signal level, wherein the programming step comprises a programming phase and a plurality of verify phases. In another variation, a flash memory device having a plurality of program values is programmed, and the programming step comprises a programming phase and a plurality of verify phases, wherein at least one signal level comprises a plurality of the program values. The signal levels or the program values (or both) can be represented using one or more of a voltage, a current and a resistance.
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