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:
Feb. 15, 1994
Filed:
Aug. 18, 1992
Applicant:
Inventor:
Takayuki Mogi, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365179 ; 365174 ;
Abstract
An SCR type memory apparatus which is short in access time, easy in setting current values upon reading and writing and easy in constructing a peripheral circuit with less power supply voltage limitation is described. The semiconductor memory apparatus comprises of a basic cell circuit which includes an SCR type memory cell. The SCR type memory cell includes a pair of pnp transistors and a pair of double emitter transistors. The basic cell circuit also includes a pair of write npn transistors. The collector of each write npn transistor is connected to a voltage holding node of the SCR type memory cell and the base is connected to a word selecting line.