Patent ID: 6150868
Filing Date: 2000-11-21
Classification: G11C,H01L

Abstract:
An anti-fuse programming circuit comprising:operation switching means for precharging said anti-fuse programming circuit with a half voltage to operate it;an anti-fuse connected to said operation switching means, said anti-fuse being subjected to a dielectric breakdown when it is supplied with an overcurrent;sense signal input means for inputting a sense signal to verify a programmed state of said anti-fuse;breakdown voltage supply means for supplying a source voltage for the dielectric breakdown of said anti-fuse;output means for outputting a signal indicative of the programmed state of said anti-fuse in response to said sense signal inputted by said sense signal input means;current blocking means for blocking a current path from said breakdown voltage supply means to said anti-fuse in response to a control signal from said output means; andlatch means for strongly stabilizing said anti-fuse at the level of said half voltage in response to said control signal from said output means.