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, 1995
Filed:
Mar. 18, 1994
Applicant:
Inventors:
Jeffery E Downs, Colorado Springs, CO (US);
Michael W Yeager, Colorado Springs, CO (US);
Assignee:
Ramtron International Corporation, Colorado Springs, CO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ; G11C / ;
U.S. Cl.
CPC ...
365195 ; 36518907 ; 365145 ; 36518901 ; 342 51 ;
Abstract
A system and method wherein a predetermined soft fuse value may be written to a corresponding soft fuse register to control subsequent access to a number of lock bits in a non-volatile semiconductor memory array which are provided for selectively precluding writes to predetermined portions of the memory array. In a specific embodiment, the system and method may be utilized in conjunction with radio frequency ('RF') identification ('ID') transponders incorporating a non-volatile ferroelectric random access memory ('FRAM') array integrated circuit.