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:
Jun. 24, 2003
Filed:
Mar. 21, 2002
Applicant:
Inventors:
Thomas Roehr, Yokohama, JP;
Hans-Oliver Joachim, Zushi, DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 1/112 ;
U.S. Cl.
CPC ...
G11C 1/112 ;
Abstract
A chained memory IC in which a dual voltage scheme is used for operating the wordlines is described. During standby mode, the wordlines are maintained at a first logic 1 voltage level. To prepare for a memory access, the non-selected wordlines are driven to a boosted voltage while the selected wordline is driven to ground. The first logic 1 voltage level is less than the boosted voltage. This reduces the stress on the gate oxide of the transistors, thus improving reliability of the memory IC.