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. 30, 1992
Filed:
May. 16, 1990
Steve S Chiang, Saratoga, CA (US);
Esam Elashmawi, San Jose, CA (US);
Theodore M Speers, San Leandro, CA (US);
LeRoy Winemberg, Fremont, CA (US);
Actel Corporation, Sunnyvale, CA (US);
Abstract
An already- programmed anti-fuse is DC soaked by passing DC current through the anti-fuse from a DC voltage source applied across the electrodes of the anti-fuse. The anti-fuse resistance is lower when the DC voltage being applied such that the positive end of the voltage source is applied to the electrode having the higher arsenic concentration. An already programmed anti-fuse is AC soaked, by passing alternating current pulses through the anti-fuse from an AC voltage source applied across the anti-fuse electrodes. This AC soak may even be applied following the controlled polarity DC soak disclosed herein. The AC soaked anti-fuse resistance is even lower than DC soaked anti-fuse under the same soak current level.