| 摘要 |
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 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 output part, and a latch part for strongly stabilizing the anti-fuse at the level of the half voltage in response to the control signal from the output part. According to the present invention, the programmed state of the anti-fuse can be verified and current consumption can significantly be reduced in programming the anti-fuse.
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