Abstract
RRAMs as artificial synapses have shown their prospects in associative learning tasks. However, the circuit design based on input signal overlapping is contradictory with the characteristics of conventional phase-change memory (PCM), resulting in limited scalability of RRAM-based associative learning at network level. Here, we present a concise circuit utilizing unconventional PCM and realize the complete associative learning function. By employing MoTe <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> non-melting phase transition of the fabricated PCM, corresponding circuit and waveform design can be matched, thus provides a promising solution for the array implementation of associative learning. To demonstrate the associative learning ability of this design, a dynamic model of electrical characteristics of the PCM is built, and complete function of the Pavlov’s dog is simulated with HSpice.
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