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:
Jun. 11, 2002
Filed:
Feb. 26, 1998
Callum Gordon, Strathaven, GB;
Atmel Research, Georgetown, KY;
Abstract
A semiconductor circuit arrangement providing enhanced security has a first circuitry portion ( ) on a semiconductor wafer ( ), a second circuitry portion ( ) on the wafer separate from the first circuitry portion, the second circuitry portion being coupled ( ) to the first circuitry portion and containing access circuitry for allowing access to thereto, and the second circuitry portion being disposed on the wafer such that it can be destructively removed therefrom to leave the first portion of semiconductor circuitry inaccessible through the second portion of semiconductor circuitry. Isolation circuitry ( ) is provided for electrically isolating the first circuitry portion following destructive removal of the second circuitry portion.