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SPICE MODELING OF PHASE-CHANGE RESISTANCE IN PCM

ABSTRACT A discussion on spice models for phase-change resistance (PCR) used in PCM (Phase Change Memory) is presented. A two-terminal SPICE model that incorporates reading and writing circuit which can be directly overwritable is now available. It can automatically detect the stimulus and make corresponding reactions with no need to make any initiation between two consecutive pulses. Consequently the properties of this PCR models in both steady states and dynamic states are compared with available experimental results and known conclusions.