Static information storage and retrieval – Read/write circuit – Data refresh
Reexamination Certificate
2006-01-31
2006-01-31
Ho, Hoai (Department: 2827)
Static information storage and retrieval
Read/write circuit
Data refresh
C365S189080, C365S191000, C365S230060, C365S230080, C365S233100, C365S235000
Reexamination Certificate
active
06992943
ABSTRACT:
Systems and methods for performing a PASR (partial array self-refresh) operation wherein a refresh operation for recharging stored data is performed on a portion (e.g., ½ ¼, ⅛, or 1/16) of one or more selected memory banks comprising a cell array in a semiconductor memory device. In one aspect, a PASR operation is performed by (1) controlling the generation of row addresses by a row address counter during a self-refresh operation and (2) controlling a self-refresh cycle generating circuit to adjust the self-refresh cycle output therefrom. The self-refresh cycle is adjusted in a manner that provides a reduction in the current dissipation during the PASR operation. In another aspect, a PASR operation is performed by controlling one or more row addresses corresponding to a partial cell array during a self-refresh operation, whereby a reduction in a self-refresh current dissipation is achieved by blocking the activation of a non-used block of a memory bank.
REFERENCES:
patent: 4933907 (1990-06-01), Kumanoya et al.
patent: 5469559 (1995-11-01), Parks et al.
patent: 5511033 (1996-04-01), Jung
patent: 5875143 (1999-02-01), Ben-Zvi
patent: 5977864 (1999-11-01), Buonpane et al.
patent: 6075744 (2000-06-01), Tsern et al.
patent: 6081468 (2000-06-01), Taira et al.
patent: 6205046 (2001-03-01), Maesako
patent: 6215714 (2001-04-01), Takemae et al.
patent: 6243768 (2001-06-01), Khandekar
patent: 6345009 (2002-02-01), Tsern et al.
patent: 2004/0027902 (2004-02-01), Ooishi
patent: 1 074 993 (2001-02-01), None
Choi Jong-Hyun
Hwang Hyong-Ryol
Jang Hyun-Soon
F. Chau & Associates LLC
Ho Hoai
Pham Ly Duy
Samsung Electronics Co,. Ltd.
LandOfFree
System and method for performing partial array self-refresh... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for performing partial array self-refresh..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for performing partial array self-refresh... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3527112