Programming of antifuses

Details Programming of antifuses Programming of antifuses

1993-07-20

1995-03-14

Westin, Edward P.

Electronic digital logic circuitry

Multifunctional or programmable

Having details of setting or programming of interconnections...

365 96, 257530, 327525, H03K 19173, G06F 738

Patent

active

053979397

ABSTRACT:
The invention allows programming an antifuse so as to reduce the antifuse resistance and the standard deviation of the resistance without increasing the programming current. This is achieved by passing current pulses of the opposite polarity through the antifuse. In some embodiments, the magnitude of the second pulse is lower than the magnitude of the first pulse. Further, if the antifuse is formed on a semiconductor substrate with one electrode on top of the other electrode and on top of the substrate, the current during the first pulse flows from the top electrode to the bottom electrode and not vice versa. A programming circuitry is provided that allows to program antifuses in a programmable circuit. A driver circuit is connected to each "horizontal" channel and each "vertical" channel. Each driver circuit is controlled by data in the driver circuit. The driver circuits are connected into shift registers so that all the data can be entered from one, two, three or four inputs. No decoding circuitry is necessary. Before programming, the drivers precharge all the channels to an intermediate voltage. During programming, the channels that are not directly connected to the antifuse being programmed are switched to high impedance. As a result, the power consumption is reduced and the programming proceeds faster.

REFERENCES:
patent: 4730273 (1988-03-01), Sluss
patent: 4758745 (1988-07-01), Elgamal et al.
patent: 4873459 (1989-10-01), Elgamal et al.
patent: 4881114 (1989-11-01), Mohsen et al.
patent: 5008855 (1991-04-01), Eltoukhy et al.
patent: 5126282 (1992-06-01), Chiang et al.
patent: 5130777 (1992-07-01), Galbraith et al.
patent: 5148391 (1992-09-01), Zagar
patent: 5166557 (1992-11-01), Chen et al.
patent: 5243226 (1993-09-01), Chan
patent: 5272388 (1993-12-01), Bakker

Affiliated with

Also associated with

Rating

Programming of antifuses does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Programming of antifuses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Programming of antifuses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-714856