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:
Jul. 27, 1982
Filed:
Oct. 31, 1980
Applicant:
Inventor:
Colin W Edwards, Chalfont St. Peters, GB;
Assignee:
Hughes Microelectronics Limited, Glenrothes, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365154 ; 365189 ;
Abstract
An NMOS non-volatile latch having N-channel drivers Q.sub.1 and Q.sub.2 and variable threshold N-channel FATMOS transistors Q.sub.3 and Q.sub.4 as depletion loads. The control gate of each FATMOS transistor is coupled to its own node (X.sub.1 or X.sub.2) so as to operate in depletion, whereas to obtain the correct voltage stresses the tunnels of the FATMOS floating gates are cross-coupled to the opposite latch nodes.