Micron Technology was first company to start mass production of PCM . Even in summer Micron announced that it produce or smartphones and tablets 45-nm 1-chip Gbit PCM (128 MB). For ease of use , non-volatile memory PCM crystals were packed with crystals in the package with SRAM interface LPDDR2.
As admitted Micron representative at the exhibition of electronic components in Munich (Electronica 2012) until the end of the year the company will release tens millions of chips 1-Gbit PCM. While Micron unveiled the name of only one client . This is Nokia company , which uses PCM is phones Asha. Name of the second recipient is kept secret. Since the capacity of mass PCM chips are relatively small, they are registered only in the top-level phones and lower smartphones, where volume requirements for downloadable software are not high.
Note to begin mass production of PCM, Micron company missed 65-nanometer manufacturing process, as up to 45-nm making it showed only the appropriate 90-nm design. The company said that the 30-nm process technology class will be skipped and the next PCM-memory devices will be on 20-nm class.
It must be said that Micron company , after Samsung, stop pointing the exact gate transistors length , citing the fact that accurately measure step process technology at a certain point became impossible.
The memory with variable phase state agents is working on the same physical principles as the rewritable optical disc. The substance in the memory cell based on chalcogenide under the influence of local heating can become amorphous or crystalline. This changes the resistance of the cell .