Semiconductor memory device and driving method thereof

Details Semiconductor memory device and driving method thereof Semiconductor memory device and driving method thereof

2006-09-29

2008-11-11

Tran, Michael T (Department: 2827)

Static information storage and retrieval

Read/write circuit

Differential sensing

C365S205000

Reexamination Certificate

active

07450455

ABSTRACT:
A semiconductor memory device prevents deterioration of refresh operation caused by sensing noise and a driving method thereof. First pull-down and second pull-down voltages which are different from each other are as a pull-down voltage of a bit line sense amplifier. The first and the second pull-down voltages are used in different driving periods to protect data from noises caused by another memory bank. A driving period can be separated into an initial sensing period, wherein large currents are consumed and significant noise is generated, and a subsequent stable period. The driving period can be separated into a pre-precharge period and a post-precharge period.

REFERENCES:
patent: 4694205 (1987-09-01), Shu et al.
patent: 4816706 (1989-03-01), Dhong et al.
patent: 5777939 (1998-07-01), Won
patent: 6735134 (2004-05-01), Park
patent: 2004/0136254 (2004-07-01), Regev
patent: 2004/0233754 (2004-11-01), Kwon
patent: 2004/0264277 (2004-12-01), Song
patent: 2003-123473 (2003-04-01), None
patent: 1996-0012019 (1996-04-01), None
patent: 10-2002-0058505 (2002-07-01), None
patent: 10-2004-0038067 (2004-05-01), None
patent: 10-2005-0097153 (2005-10-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4028293