Invention Grant
- Patent Title: Programmable efuse and sense circuit
- Patent Title (中): 可编程efuse和感应电路
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Application No.: US12502938Application Date: 2009-07-14
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Publication No.: US07902903B2Publication Date: 2011-03-08
- Inventor: Nick Rosik , Richard D Young , Mark E Stading , Denpol Thammanukultorn
- Applicant: Nick Rosik , Richard D Young , Mark E Stading , Denpol Thammanukultorn
- Applicant Address: US MA Waltham
- Assignee: Raytheon Company
- Current Assignee: Raytheon Company
- Current Assignee Address: US MA Waltham
- Agency: Christie, Parker & Hale, LLP
- Main IPC: G11C17/16
- IPC: G11C17/16

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.
Public/Granted literature
- US20110012668A1 PROGRAMMABLE EFUSE AND SENSE CIRCUIT Public/Granted day:2011-01-20
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