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:
Apr. 02, 1991
Filed:
Jul. 19, 1989
Applicant:
Inventor:
Hajime Masuda, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365 96 ; 36523003 ; 36523006 ;
Abstract
A programmable read only memory device according to the present invention comprises a plurality of row selector blocks respectively coupled between row lines and a ground node, and each row selector block has a first discharging unit providing a current path in a read-out mode of operation only and a second discharging unit providing a current path in both write-in and read out modes of operation, so that the current driving capability is decreased in the read out mode of operation, thereby decreasing the current consumption as well as the time period consumed for a single read out operation.