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. 06, 2004
Filed:
Nov. 28, 2001
Applicant:
Inventors:
Franck Roche, Trets, FR;
Thierry Bouquier, Aix en Provence, FR;
Assignee:
STMicroelectronics SA, Montrouge, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/44 ; G06F 1/125 ; G06F 1/134 ; G06F 9/445 ;
U.S. Cl.
CPC ...
G06F 9/44 ; G06F 1/125 ; G06F 1/134 ; G06F 9/445 ;
Abstract
A microprocessor may be switchable between a normal mode and a test mode for performing a test program and may include a central processing unit (CPU) for saving contextual data in a stack of the microprocessor at the time of switching to the test mode. The CPU may deliver, at the beginning of the test program and on an input/output port, contextual data present in the stack beginning with the top of the stack. The CPU may also decrement a stack pointer by a value corresponding to a number of contextual data delivered.