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:
Nov. 21, 1989
Filed:
Jan. 19, 1988
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518904 ; 365190 ; 365218 ;
Abstract
A precharge circuit is provided between bit lines, on the one hand, and a power source potential on the other. The precharge circuit is controlled to be conductive/nonconductive by a clear signal. A control unit is also provided, which controls a decoder when the clear signal is supplied so as to set all the word lines in a selective state. In a clear mode, writing circuits write the same data simultaneously into all of the memory cells.