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:
May. 31, 1994
Filed:
Mar. 30, 1992
Applicant:
Inventor:
S Sheffield Eaton, Jr, Colorado Springs, CO (US);
Assignee:
United Memories, Inc., Colorado Springs, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518909 ; 36518907 ; 365226 ;
Abstract
In a DRAM, a logic '1' is redefined as the minimum VCC value minus one threshold voltage. The word line is not bootstrapped. This intermediate voltage is applied via the sense amplifier to the bit lines during refresh. The intermediate value is controlled preferably by a comparator controlling a driver. Even when the power supply voltage rises, the intermediate voltage is held constant by comparison to a fixed reference voltage. Operating current is substantially reduced because less power is required to write data into the memory cells, since a controlled lower voltage is used.