Method for conducting over-erase correction

Details Method for conducting over-erase correction Method for conducting over-erase correction

2011-04-12

2011-04-12

Luu, Pho M (Department: 2824)

Static information storage and retrieval

Floating gate

Multiple values

C365S185290, C365S185220, C365S218000

Reexamination Certificate

active

07924610

ABSTRACT:
A method for conducting an over-erase correction describes the steps of: conducting a first erase and verification operation; using an FN soft program to correct over-erased cells if bit line leakage is found after the first erase and verification operation; conducting a second erase and verification operation; and using a hot carrier HC soft program to correct over-erased cells if bit line leakage is found after the second erase and verification operation.

REFERENCES:
patent: 5400286 (1995-03-01), Chu et al.
patent: 6504765 (2003-01-01), Joo
patent: 6639844 (2003-10-01), Liu et al.
patent: 7123518 (2006-10-01), Cheng et al.
patent: 2005/0073886 (2005-04-01), Hamilton et al.

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