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:
Oct. 16, 1990
Filed:
Aug. 11, 1989
Applicant:
Inventors:
Mark S Birrittella, Chippewa Falls, WI (US);
Jan A Wikstrom, Chippewa Falls, WI (US);
Assignee:
Cray Research, Inc., Eagan, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518906 ; 365154 ; 365179 ;
Abstract
A READ-WHILE-WRITE current-mode logic RAM cell suitable for use in a RAM device having the ability to simultaneously write and read data. The RAM cell contains a bit-cell consisting of flip-flop configured transistors differentially connected to a constant current source, a multiple-emitter transistor network tied to each bit-cell load resistor which prevents the bit-cell from saturating, separate READ and WRITE data lines, and READ and WRITE buffer transistors having READ and WRITE control lines.