发明授权
US07800956B2 Programming algorithm to reduce disturb with minimal extra time penalty
有权
编程算法以最小的额外时间损失来减少干扰
- 专利标题: Programming algorithm to reduce disturb with minimal extra time penalty
- 专利标题(中): 编程算法以最小的额外时间损失来减少干扰
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申请号: US12163073申请日: 2008-06-27
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公开(公告)号: US07800956B2公开(公告)日: 2010-09-21
- 发明人: Dana Lee , Deepanshu Dutta , Yingda Dong
- 申请人: Dana Lee , Deepanshu Dutta , Yingda Dong
- 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: G11C11/34
- IPC分类号: G11C11/34
摘要:
Programming time is reduced in a non-volatile memory in a multi-pass programming process. In a first programming pass, high state cells are programmed by a sequence of program pulses to identify fast and slow high state cells, while lower state cells are locked out from programming. Once identified, the fast high state cells are temporarily locked out from programming while the slow high state cells continue being programmed to their final intended state. Further, the program pulses are sharply stepped up to program the slow high state cells. In a second programming pass, the fast high state cells are programmed along with the other, lower state cells, until they all reach their respective intended states. A time savings is realized compared to approaches in which all high state cells are programmed in the first programming pass.
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