基于主成分分析的温度对Flash存储器电参数一致性分析

Electrical parameter conformity analysis on temperature based on principle component analysis for Flash memory

针对温度对闪存(Flash)存储器电参数的一致性影响特性尚不清晰、一致性分析评价方法不明确等问题,提出采用主成分分析法对Flash存储器中的不同电参数进行一致性分析。实验结果表明:温度会对Flash存储器的电参数漂移产生影响,随着温度的升高或降低,Flash存储器电参数的主成分均值与方差具有相反的变化趋势。基于主成分分析法为Flash存储器的电参数一致性评价提供一种手段,温度对其电参数一致性的影响特性对保障产品的质量及改进设计具有指导意义。

Aiming to the problem of the temperature affects the conformity of electrical parameter is unclear and there is still no method for evaluating conformity. Principle component analysis （PCA） has been proposed to investigate the conformity of electrical parameters in Flash memories. Experiment results show that temperature causes the drift of electrical parameter, and the mean and variance of PCA data has inverse changing direction. The proposed PCA applies a good approach for conformity of electrical parameter evaluation in Flash memories, and it brings in a bright future of high quality and reliable design and production of Flash memories.