Semiconductor memory, operating method of semiconductor...

Details Semiconductor memory, operating method of semiconductor... Semiconductor memory, operating method of semiconductor...

2007-11-30

2010-06-29

Lam, David (Department: 2827)

Static information storage and retrieval

Read/write circuit

Data refresh

C365S230030, C365S233100, C365S189050

Reexamination Certificate

active

07746718

ABSTRACT:
A refresh register stores disable block information indicating a memory block whose refresh operation is to be disabled. A refresh control circuit periodically executes the refresh operation of a memory block except the memory block corresponding to the disable block information. During an access cycle to one of the memory blocks, the register control circuit writes the disable block information to the refresh register according to an external input. Consequently, in order to rewrite the refresh register, it is not necessary to use an additional operation cycle to the access cycle. Since there is no need to insert an extra operation cycle, it is possible to change a memory area to be refreshed without lowering effective efficiency of access cycles. As a result, power consumption can be reduced.

REFERENCES:
patent: 7180808 (2007-02-01), Choi et al.
patent: 7342841 (2008-03-01), Jain et al.
patent: 2004/0165465 (2004-08-01), Kashiwazaki
patent: 09-128965 (1997-05-01), None
patent: 2002-190724 (2002-07-01), None
patent: 2002-269981 (2002-09-01), None
patent: 2003-068075 (2003-03-01), None
patent: 2004-259343 (2004-09-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4207866