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:
Mar. 26, 1996
Filed:
May. 25, 1994
William J Allen, Cupertino, CA (US);
Other;
Abstract
A method for programming antifuses is described. Programming current pulses are driven through a selected antifuse. The resistance through the antifuse is then measured and compared to a predetermined resistance value. These measuring, comparing and driving steps are repeated until the measured resistance is less than a predetermined resistance value and the antifuse is annealed by driving a predetermined amount of current through the antifuse for a first predetermined amount of time and ramping down the current in a predetermined manner in a second predetermined amount of time. With this programming method no complex methods and circuits to reverse the polarities of voltage across and currents through the antifuse are required.