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:
Apr. 16, 2002
Filed:
Jan. 17, 2001
John A. Fifield, Underhill, VT (US);
Wayne F. Ellis, Jericho, VT (US);
Nicholas M. van Heel, Eagle, ID (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An integrated circuit device that obviates laser programming of a two-state element (e.g., a wire fuse or antifuse) by programming (i.e., changing) the conductive state of the two-state element according to a binary bit of programing data serially scanned in. Thereafter, the device can verify the actual programming of the two-state element by sensing the conducting condition and then serially scanning out the conductive state value of the two-sate element as a binary logic bit). The device provides the functionality of being able to test any on-chip non-memory circuitry that depends on a memory circuit being fully functional and operational while still at the wafer tester and before having to “blow” (i.e., program) any fuses.