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发明申请
US20060221709A1 Systems for erasing non-volatile memory using individual verification and additional erasing of subsets of memory cells 有权
用于使用单独验证擦除非易失性存储器的系统以及对存储器单元子集的额外擦除

  • 专利标题： Systems for erasing non-volatile memory using individual verification and additional erasing of subsets of memory cells
  • 专利标题（中）： 用于使用单独验证擦除非易失性存储器的系统以及对存储器单元子集的额外擦除
  • 申请号： US11296028
    申请日： 2005-12-06
  • 公开(公告)号： US20060221709A1
    公开(公告)日： 2006-10-05
  • 发明人: Gerrit Hemink , Teruhiko Kamei
  • 申请人： Gerrit Hemink , Teruhiko Kamei
  • 主分类号： G11C16/04
  • IPC分类号： G11C16/04
Systems for erasing non-volatile memory using individual verification and additional erasing of subsets of memory cells
摘要：
A set of non-volatile storage elements is divided into subsets for erasing in order to avoid over-erasing faster erasing storage elements. The entire set of elements is erased until a first subset of the set of elements is verified as erased. The first subset can include the faster erasing cells. Verifying the first subset includes excluding a second subset from verification. After the first subset is verified as erased, they are inhibited from erasing while the second subset is further erased. The set of elements is verified as erased when the second subset is verified as erased. Verifying that the set of elements is erased can include excluding the first subset from verification or verifying both the first and second subsets together. Different step sizes are used, depending on which subset is being erased and verified in order to more efficiently and accurately erase the set of elements.
摘要（中）：

一组非易失性存储元件被划分成用于擦除的子集，以避免擦除存储元件的擦除更快。 整个元素组被擦除，直到该组元素的第一个子集被验证为被擦除为止。 第一个子集可以包括更快的擦除单元。 验证第一个子集包括从验证中排除第二个子集。 在第一子集被验证为擦除之后，它们被禁止擦除，而第二子集被进一步擦除。 当第二个子集被验证为擦除时，该组元素被验证为被擦除。 验证该组元素被擦除可以包括排除第一子集验证或验证第一和第二子集在一起。 使用不同的步长，这取决于要擦除和验证哪个子集，以便更有效和准确地擦除该组元素。

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