发明授权
US07295478B2 Selective application of program inhibit schemes in non-volatile memory
有权
在非易失性存储器中选择性地应用程序抑制方案
- 专利标题: Selective application of program inhibit schemes in non-volatile memory
- 专利标题(中): 在非易失性存储器中选择性地应用程序抑制方案
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申请号: US11127743申请日: 2005-05-12
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公开(公告)号: US07295478B2公开(公告)日: 2007-11-13
- 发明人: Jun Wan , Jeffrey Lutze , Masaaki Higashitani , Gerrit Jan Hemink , Ken Oowada , Jian Chen , Geoffrey S. Gongwer
- 申请人: Jun Wan , Jeffrey Lutze , Masaaki Higashitani , Gerrit Jan Hemink , Ken Oowada , Jian Chen , Geoffrey S. Gongwer
- 申请人地址: US CA Milpitas
- 专利权人: SanDisk Corporation
- 当前专利权人: SanDisk Corporation
- 当前专利权人地址: US CA Milpitas
- 代理机构: Vierra Magen Marcus & DeNiro LLP
- 主分类号: G11C7/00
- IPC分类号: G11C7/00
摘要:
A non-volatile memory system is programmed so as to reduce or avoid program disturb. In accordance with one embodiment, multiple program inhibit schemes are employed for a single non-volatile memory system. Program inhibit schemes are selected based on the word line being programmed. Certain program inhibit schemes have been discovered to better minimize or eliminate program disturb at select word lines. In one embodiment, selecting a program inhibit scheme includes selecting a program voltage pulse ramp rate. Different ramp rates have been discovered to better minimize program disturb when applied to select word lines. In another embodiment, the temperature of a memory system is detected before or during a program operation. A program inhibit scheme can be selected based on the temperature of the system.
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