Brevet : EP1943531 - PROCEDES ET APPAREILS PERMETTANT DE TESTER DES CIRCUITS INTEGRES
Titre
PROCEDES ET APPAREILS PERMETTANT DE TESTER DES CIRCUITS INTEGRES
N° et date de publication de la demande
EP1943531 - 16/07/2008
Type de la demande
A1
N° et date de dépôt
EP06809581.9 - 12/10/2006
N° et date de priorité
EP05109892 - 24/10/2005
Classification CIB
Classification CPC
Famille de brevets
TW200732686A ; US2008290878A1 ; WO2007049171A1 ; CN101297208A ; ATE462980T1 ; JP2009512872A ; EP1943531A1
Abrégé
A testing circuit has a shift register circuit (76) for storing instruction data for the testing of an integrated circuit core. Each stage of the shift register circuit comprises a first shift register storage element (32) for storing a signal received from a serial input (wsi) and providing it to a serial output (wso) in a scan chain mode of operation, and a second parallel register storage element (38) for storing a signal from the first shift register storage element and providing it to a parallel output in an update mode of operation. The testing circuit further comprises a multiplexer (70) for routing either a serial test input to the serial input (wsi) of the shift register circuit or an additional input (wpi[n]) into the serial input of the shift register circuit (76). In a preferred example, the testing circuit further comprises a control circuit (78) which responds to a specific value of data stored in at least one stage of the shift register to generate an update signal for setting the other shift register stages into the update mode of operation.
INTERVENANTS
Déposant
NXP BV (NXP B.V.) - NL
Titulaire
NXP B.V. - HIGH TECH CAMPUS 60 5656 AG EINDHOVEN - NL
Inventeur
WAAYERS, TOM REDHILL SURREY RH1 5HA - GB
Mandataire
Plasseraud IP - 66 rue de la Chaussée d'Antin - 75440 PARIS CEDEX 09 - FR
STATUT EN FRANCE : Déchu
Délivrance
31/03/2010
Date de constatation de déchéance
-
10/09/2020 (BOPI 2020-42)
Dernière annuité payée
20/09/2018
Quantième- N° de l'annuité payée
13
Date de paiement de la prochaine annuité
31/10/2019