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. 28, 1989
Filed:
Jul. 02, 1987
Applicant:
Inventors:
Klaus Dimmler, Colorado Springs, CO (US);
S Sheffield Eaton, Jr, Colorado Springs, CO (US);
Assignee:
Ramtron Corporation, Colorado Springs, CO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ; G11C / ; G11C / ; G11C / ;
U.S. Cl.
CPC ...
365145 ; 365149 ; 365185 ; 365154 ; 365228 ;
Abstract
A memory cell includes an SRAM flip-flop cell having two nodes coupled to ferroelectric capacitors so that when the SRAM is powered down, the ferroelectric devices store data and upon power up, transfer the stored data to the SRAM cell. The ferroelectric devices can be bypassed during normal SRAM operations to reduce hysteresis fatigue.