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:
Mar. 12, 1996
Filed:
Jan. 24, 1994
Applicant:
Inventor:
Tord Haulin, Uppsala, SE;
Assignee:
Telefonaktiebolaget LM Ericsson, Stockholm, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ; G01R / ;
U.S. Cl.
CPC ...
324765 ; 3241 / ; 324771 ; 324763 ; 371 223 ;
Abstract
A device for monitoring supply voltage locally on integrated circuits after mounting on electronic component boards (11) includes at least one voltage monitor (31) as well as boundary scan means (36, 36', 37) for reading out the result of the monitoring. The monitor includes an extreme value detector (41), situated at the place on the circuit surface where voltage monitoring is desired and detecting the minimum absolute voltage between a local supply voltage lead and a local ground lead. The minimum value detector comprises one or two FET transistors at most.