Semiconductor memory device capable of reading data reliably

Details Semiconductor memory device capable of reading data reliably Semiconductor memory device capable of reading data reliably

2007-07-20

2010-11-30

Auduong, Gene N. (Department: 2827)

Static information storage and retrieval

Floating gate

Multiple values

C365S185180, C365S185230

Reexamination Certificate

active

07843723

ABSTRACT:
A control unit reads data from a plurality of memory cells connected to one of the word lines in a read operation at a first level CR generated by a voltage generator circuit and in a read operation at a second level CR−x and finds the number of cells included between the first level and the second level from the data and, if the number is equal to or smaller than a specified value, determines the result of the read operation at the first level to be read data.

REFERENCES:
patent: 6657891 (2003-12-01), Shibata et al.
patent: 6975542 (2005-12-01), Roohparvar
patent: 7079419 (2006-07-01), Roohparvar
patent: 7110292 (2006-09-01), Hahn et al.
patent: 2006/0044923 (2006-03-01), Hahn et al.
patent: 2004-192789 (2004-07-01), None

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