Phase change memory: an overview
Summary
Unlike traditional forms of memory, which store data using electrical charges, PCM relies on the unique properties of certain materials that can switch between two distinct physical states – amorphous (disordered) and crystalline (ordered). Mobile devices benefit from PCM’s low power consumption and high endurance, which is the ability to withstand many write and erase cycles. Additionally, PCM is used in embedded systems, such as those in automotive electronics and industrial controls, where long-term data retention and fast access times are necessary. The technology is also scalable, meaning PCM cells can be made smaller than those in some other types of memory, potentially allowing for higher storage density, which is more data stored in the same physical space. PCM has been considered a next-generation data-storage technology because of its potential to overcome the limitations of existing memory types like NAND flash and DRAM.