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:
Dec. 05, 2000
Filed:
Mar. 02, 1999
Motorola, Inc., Schaumburg, IL (US);
Abstract
Fuses and detect circuits (124) in an integrated circuit memory (100) include a copper fuse (208) and a fuse state detect stage (202) for detecting the open circuit state or the closed circuit state of the fuse (208). The fuse detect circuit (124) provides an output signal corresponding to the state of the fuse and during detecting, limits a voltage drop across the fuse to an absolute value independent of a power supply voltage applied to the integrated circuit memory. The fuse detect circuit (124) operates at power up of the integrated circuit memory (100) and is disabled after the state of the fuse is detected and latched, and the power supply is sufficient for reliable operation of the integrated circuit memory (100). By limiting the voltage drop across a blown copper fuse (208), a potential electro-migration problem is reduced.