Static information storage and retrieval – Floating gate – Particular connection
Reexamination Certificate
2006-11-02
2008-10-21
Ho, Hoai V (Department: 2827)
Static information storage and retrieval
Floating gate
Particular connection
C365S185190, C365S185280
Reexamination Certificate
active
07440323
ABSTRACT:
A method for operating a non-volatile storage system which reduces program disturb. Multiple boosting modes are implemented while programming non-volatile storage. For example, self-boosting, local self-boosting, erased area self-boosting and revised erased area self-boosting may be used. One or more switching criteria are used to determine when to switch to a different boosting mode. The boosting mode may be used to prevent program disturb in unselected NAND strings while storage elements are being programmed in selected NAND strings. By switching boosting modes, an optimal boosting mode can be used as conditions change. The boosting mode can be switched based on various criteria such as program pulse number, program pulse amplitude, program pass number, the position of a selected word line, whether coarse or fine programming is used, whether a storage element reaches a program condition and/or a number of program cycles of the non-volatile storage device.
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Dong Yingda
Lutze Jeffrey W.
Ho Hoai V
SanDisk Corporation
Vierra Magen Marcus & DeNiro LLP
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