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Solving a system of multivariate quadratic equations obtained through algebraic cryptanalysis is a nondeterministic polynomial time-complete problem. Owing to the trend of stream ciphers based on nonlinear update, the success of algebraic attacks has been limited to their reduced variants. On the other hand, side channel attacks (SCAs), although require a continued access to the target device for...
This paper presents a Multilevel Phase Change Memory (MLPCM) cell model, the suggested model is MATLAB based and can accurately simulate the behavior of the cell in response to the programming input. The model calculates the resistance of the cell as a function of the crystalline fraction resulting from the temperature generated by the programming current; multiple resistance levels are achieved by...
Nonvolatile memories have emerged in recent years and have become a leading candidate towards replacing dynamic and static random-access memory devices. In this article, the performance of physical TiO2 and TaO2 nonvolatile memristive devices were compared in terms of switching speed, retention and endurance. TaO2 memristive devices have shown better endurance (108 times more switching cycles) and...
This paper presents a novel LTSPICE based Phase Change Memory (PCM) cell emulator model, using only off the shelf discrete electronic components. The electrical based model simulates not only the continuous resistance change (as corresponding to amorphous and crystalline phases), but also the temperature profile across the cell during programming, while assessing the impact of the programming time...
This paper presents an LTSpice model for a Phase Change Memory (PCM) cell that accurately simulate the temperature profile, the crystalline fraction and the resistance of the cell as a function of the programming pulse based on physical theories. The model is able to generate the I-V characteristics of a PCM cell, and precisely simulate the drift phenomenon of resistance and threshold voltage at the...
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