Programming antifuses in Crosspoint's FPGA

This paper describes how Crosspoint programs antifuses in its fine grain architecture. It compares the programming circuits used by Crosspoint to the circuits used by Actel and Quick-logic. Every antifuse in Crosspoint's FPGA can be uniquely programmed using a three dimensional addressing scheme to independently drive each electrode of the antifuse. The circuitry supports 10 V programming and 13.5 mA programming current to any target antifuse. Although the programming overhead is high, the antifuses are programmed to an average 50 /spl Omega/ resistance, thus providing for high performance operation of the FPGA.<
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