Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Fusible link or intentional destruct circuit
Patent
1999-06-29
2000-10-17
Nguyen, Viet Q.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Fusible link or intentional destruct circuit
327526, 327 54, 327331, 3652257, 365 96, 326 10, G11C 1700
Patent
active
061337781
ABSTRACT:
An anti-fuse programming circuit comprising an operation switching part for precharging the anti-fuse programming circuit with a half voltage to operate it, an anti-fuse connected to the operation switching part, the anti-fuse being subjected to a dielectric breakdown when it is supplied with an overcurrent, a sense signal input part for inputting a sense signal to verify a programmed state of the anti-fuse, a breakdown voltage supply part for supplying a source voltage for the dielectric breakdown of the anti-fuse, an output part for outputting a signal indicative of the programmed state of the anti-fuse in response to the sense signal inputted by the sense signal input part, a feedback part for feeding back the output signal from the output part strongly at low power and high speed, a current blocking part for blocking a current path from the breakdown voltage supply part to the anti-fuse in response to a control signal from the feedback part, a reverse current prevention part for blocking the flow of current from the feedback part to the output part, and a latch part for strongly stabilizing the anti-fuse at the level of the half voltage in response to a control signal from the output part. Current consumption can significantly be reduced in programming the anti-fuse.
REFERENCES:
patent: 5689455 (1997-11-01), Mullarkey et al.
Kim Young Hee
Ku Kie Bong
Hyundai Electronics Industries Co,. Ltd.
Nguyen Viet Q.
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