Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Fusible link or intentional destruct circuit
Patent
1993-05-26
1994-12-06
Westin, Edward P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Fusible link or intentional destruct circuit
365 96, 437922, H01H 3776
Patent
active
053714148
ABSTRACT:
A method for simultaneously programming a plurality of antifuses each having a first electrode connected to a common node and each having a second electrode connected to an isolated node electrically isolated from the nodes of each of the other antifuses includes the steps of precharging the common node and the isolated nodes to an intermediate voltage potential selected to minimize the stress on all antifuses; precharging the isolated nodes of selected ones of the antifuses to a first programming voltage potential placing a second programming voltage potential on said common node, the first and second programming voltage potentials selected such that the difference between them is sufficient to cause programming of said antifuses and such that said intermediate potential is substantially centered between them, waiting a predetermined amount of time; and measuring the current flowing between the common node isolated nodes. If the measured current indicates that the desired antifuse has not been programmed the programming process may be attempted a preselected number of times. After the selected antifuses have been programmed, they are individually soaked by passing a soaking current through them.
REFERENCES:
patent: 4758745 (1988-07-01), Elgamal et al.
patent: 5008855 (1991-04-01), Eltoukhy et al.
patent: 5130777 (1992-07-01), Galbraith et al.
patent: 5221865 (1993-06-01), Phillips et al.
patent: 5272388 (1993-12-01), Bakker
patent: 5294846 (1994-03-01), Paivinen
Actel Corporation
Driscoll Benjamin D.
Westin Edward P.
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