Method for programming antifuses for reliable programmed links
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United States of America Patent
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Mar 26, 1996
Grant Date -
N/A
app pub date -
May 25, 1994
filing date -
May 25, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
A method for programming antifuses is described. Programming current pulses are driven through a selected antifuse. The resistance through the antifuse is then measured and compared to a predetermined resistance value. These measuring, comparing and driving steps are repeated until the measured resistance is less than a predetermined resistance value and the antifuse is annealed by driving a predetermined amount of current through the antifuse for a first predetermined amount of time and ramping down the current in a predetermined manner in a second predetermined amount of time. With this programming method no complex methods and circuits to reverse the polarities of voltage across and currents through the antifuse are required.
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