Nonvolatile semiconductor memory device having protection...

Details Nonvolatile semiconductor memory device having protection... Nonvolatile semiconductor memory device having protection...

2006-03-24

2008-05-20

Mai, Son L. (Department: 2827)

Static information storage and retrieval

Floating gate

Data security

C365S195000

Reexamination Certificate

active

07376010

ABSTRACT:
A nonvolatile semiconductor memory device includes a memory cell array constituted by a plurality of memory blocks, an interface, a write circuit, and a read circuit. A protect flag is written in the memory block. The readout protect flag can be output to an external device through the interface. When a write command is input from the interface, the write circuit executes the write command when the protect flag in the selected memory block has a first value and does not execute the write command when the protect flag has a second value.

REFERENCES:
patent: 5592641 (1997-01-01), Fandrich et al.
patent: 5749088 (1998-05-01), Brown et al.
patent: 5812446 (1998-09-01), Tailliet
patent: 5991197 (1999-11-01), Ogura et al.
patent: 6031757 (2000-02-01), Chuang et al.
patent: 6490197 (2002-12-01), Fasoli
patent: 6600676 (2003-07-01), Shibata et al.
patent: 7093091 (2006-08-01), DeCaro
patent: 7210012 (2007-04-01), Lee et al.
patent: 7243199 (2007-07-01), Oikawa et al.
patent: 2002/0002654 (2002-01-01), Ichiro
patent: 2003/0126513 (2003-07-01), Sylvie
patent: 2004/0059883 (2004-03-01), Oikawa et al.
patent: 2004/0177216 (2004-09-01), Asari et al.
patent: 2005/0068842 (2005-03-01), Tominaga
patent: 2006/0133155 (2006-06-01), Fujita et al.
patent: 5-109293 (1993-04-01), None
patent: 10-106275 (1998-04-01), None
patent: 2001-35176 (2001-02-01), None
patent: 2002-109893 (2002-04-01), None

Affiliated with

Also associated with

Rating

Nonvolatile semiconductor memory device having protection... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Nonvolatile semiconductor memory device having protection..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonvolatile semiconductor memory device having protection... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3981971