FAST PROGRAMMING OF MAGNETIC RANDOM ACCESS MEMORY (MRAM)
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United States of America Patent
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app pub date -
Aug 28, 2017
filing date -
Mar 15, 2013
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Abstract
The present invention is directed to a method for programming a magnetic tunnel junction (MTJ) coupled to a transistor having a gate, a source, and a drain. The method includes the steps of setting a voltage of a source line to a first voltage, the source line being coupled to one of the source and drain of the transistor, the other one of the source and drain of the transistor being coupled to one end of the MTJ; setting a voltage of a bit line to zero, the bit line being coupled to the other end of the MTJ; setting a voltage of a word line coupled to the gate of the transistor to a second voltage that is higher than the first voltage; and programming the MTJ from a first resistance state to a second resistance state by driving a current through the MTJ from the source line to the bit line.
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