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. 30, 1999
Filed:
Sep. 03, 1997
Applicant:
Inventor:
Xavier Cauchy, Grenoble, FR;
Assignee:
SGS-Thomson Microelectronics S.A., Saint Genis, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
371 225 ; 324263 ;
Abstract
The present invention provides a circuit capable of operating according to a normal operating mode or to a structural operating mode. The test mode is stored in an internal flip-flop via an interface of the circuit. In test mode, the flip-flop is insulated from the interface by multiplexing means. To exit the test mode, an input temporarily dedicated to this function is used, this input being then insulated by multiplexing means from the rest of the circuit.