Semiconductor memory device and method of refreshing the...

Details Semiconductor memory device and method of refreshing the... Semiconductor memory device and method of refreshing the...

2005-02-04

2008-03-18

Lam, David (Department: 2827)

Static information storage and retrieval

Read/write circuit

Data refresh

C365S233100, C365S189070

Reexamination Certificate

active

07345941

ABSTRACT:
When a semiconductor memory device enters a refresh mode, retention times of memory cells are measured for each word line. A plurality of refresh cycles are set in correspondence to the retention times of the memory cells. According to the refresh cycles, the memory cells are refreshed.

REFERENCES:
patent: 5629898 (1997-05-01), Idei et al.
patent: 6603694 (2003-08-01), Frankowsky et al.
patent: 6614704 (2003-09-01), Dobler et al.
patent: 6678195 (2004-01-01), Hidaka
patent: 6721225 (2004-04-01), Tsukude
patent: 7095669 (2006-08-01), Oh
patent: 7167403 (2007-01-01), Riho et al.
patent: H08-306184 (1996-11-01), None

Affiliated with

Also associated with

Rating

Semiconductor memory device and method of refreshing the... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Semiconductor memory device and method of refreshing the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor memory device and method of refreshing the... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3959999