Random-Access Multilevel Storage in Phase Change Memory by Staircase-Like Pulse Programming
Keyword(s):
We have investigated random-access multilevel storage in phase change memory by staircase-like pulse programming. Staircase-like pulse consists of first sub-pulse and second sub-pulse. Our simulation exhibited that any resistance levels are expected to be randomly accessed by controlling the crystallization with different widths of second sub-pulset2. Based on the simulation results, we did experiment on staircase-like pulse programming. Experimental results showed that the device resistance gradually increased with reducing second sub-pulset2to 0 ns. In other words, random access to any resistance levels was demonstrated to be possible simply by changingt2.
2017 ◽
Vol 14
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pp. 347-367
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2012 ◽
Vol 51
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pp. 064101
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pp. 389
2008 ◽
Vol 29
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pp. 876-878
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