Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Fusible link or intentional destruct circuit
Reexamination Certificate
2011-03-08
2011-03-08
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Fusible link or intentional destruct circuit
C365S096000
Reexamination Certificate
active
07902903
ABSTRACT:
A circuit for electric fuses includes circuits for sensing status and programming that have separate paths for each operation. The circuit includes a plurality of electrically programmable fuses and, associated with each fuse, a switch for coupling a first terminal of the fuse to a ground supply for programming or to a comparator for sensing. The circuit uses a switched current source to supply current to the fuses for programming. The comparator senses a fuse status when a current source is switched through the fuse. The comparator compares a voltage across the fuse and associated switches to a comparison voltage across a comparison resistor and switches included for matching.
REFERENCES:
patent: 7009443 (2006-03-01), Illegems
patent: 7098721 (2006-08-01), Ouellette et al.
patent: 7403061 (2008-07-01), Barwin et al.
patent: 7501879 (2009-03-01), Oh et al.
patent: 7742352 (2010-06-01), Hara et al.
patent: 2006/0044049 (2006-03-01), Ouellette et al.
patent: 2006/0083040 (2006-04-01), Pham et al.
patent: 2009/0153228 (2009-06-01), Barwin et al.
R. F. Rizzolo, et al., “IBM System z9 eFUSE applications and methodology”, IBM J. Res. & Dev., vol. 51, No. 1/2 Jan./Mar. 2007 (pp. 65-75).
Extended European Search Report for corresponding European application No. 10251238.1, Extended European Search Report dated Sep. 13, 2010 and mailed Sep. 27, 2010 (6 pgs.).
Rosik Nick
Stading Mark E
Thammanukultorn Denpol
Young Richard D
Christie Parker & Hale LLP
Donovan Lincoln
Englund Terry L
Raytheon Company
LandOfFree
Programmable efuse and sense circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Programmable efuse and sense circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Programmable efuse and sense circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2677529