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:
Jul. 23, 1991
Filed:
Jun. 30, 1987
Applicant:
Inventors:
Hitoshi Taniguchi, Kanagawa, JP;
Keisuke Ishio, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518911 ; 365154 ; 36523003 ;
Abstract
A static RAM includes a plurality of chips. The chips each comprise a plurality of memory cells for storing data, column-selecting transistors, bit-lines to which the plurality of memory cells and the column-selecting transistors are connected, and a voltage control circuit which can adjust the electrical potential of the bit-lines so as to allow the column-selecting transistors to operate when selecting one of the chips. By use of the voltage control circuit, the static RAM can operate at a high speed when not only address selecting operation but also chip selecting operation is required.