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:
Jun. 07, 2005
Filed:
Jul. 03, 2002
Carl R. M. Hejdeman, Basingstoke, GB;
Andrew Mcknight, Southampton, GB;
Carl R. M. Hejdeman, Basingstoke, GB;
Andrew McKnight, Southampton, GB;
Semtech Corporation, Camarillo, CA (US);
Abstract
A system is provided for use with an on-chip fuse. If the fuse () is to be blown, the system blows the fuse, then performs a test read by comparing it with a larger-than-normal reference resistance (). If, even using the larger-than-normal reference resistance, the fuse reads as blown, then it is possible to be much more confident that the fuse will read correctly when compared against the normal reference resistance (), even with aging and with variations of temperature and supply. For future reads during normal operation, the system compares it with the normal reference resistance (). If, on the other hand, the fuse does not read as blown during the test read then the device can be rejected as a failed device.