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A survey on PCM lifetime enhancement schemes
, Article ACM Computing Surveys ; Volume 52, Issue 4 , 2019 ; 03600300 (ISSN) ; Jalili, M ; Sarbazi Azad, H ; Sharif University of Technology
Association for Computing Machinery
2019
Abstract
Phase Change Memory (PCM) is an emerging memory technology that has the capability to address the growing demand for memory capacity and bridge the gap between the main memory and the secondary storage. As a resistive memory, PCM is able to store data based on its resistance values. The wide resistance range of PCM makes it possible to store even multiple bits per cell (MLC) rather than a single bit per cell (SLC). Unfortunately, PCM cells suffer from short lifetime. That means PCM cells could tolerate a limited number of write operations, and afterward they tend to permanently stick at a constant value. Limited lifetime is an issue related to PCM memory; hence, in recent years, many studies...