The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 18, 2005
Filed:
Dec. 23, 2002
Applicant:
Mitsuya Kinoshita, Hyogo, JP;
Inventor:
Mitsuya Kinoshita, Hyogo, JP;
Assignee:
Renesas Technology Corp., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 800 ;
U.S. Cl.
CPC ...
Abstract
In a semiconductor memory device having a shared sense amplifier configuration, a control circuit outputting a bit line isolation signal latches a block selection signal in accordance with a change in a trigger signal. With this configuration, when the same block is selected, no change is caused in the bit line isolation signal. Consequently, charge/discharge current is reduced, and power consumption is reduced. Since a specific bit in a refresh counter is not used, unlike the conventional technique, the design changes little even in the case of changing the configuration of an array.