Non-volatile random-access memory: Difference between revisions

Revision as of 01:08, 6 May 2021

Revision as of 05:42, 8 May 2021

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[[Read-only memory]] devices can be used to store system [[firmware]] in [[embedded system]]s such as an automotive ignition system control or home appliance. They are also used to hold the initial processor instructions required to [[Bootstrapping|bootstrap]] a computer system. Read-write memory can be used to store calibration constants, passwords, or setup information, and may be integrated into a [[microcontroller]].

If the main memory of a computer system were non-volatile, it would greatly reduce the time required to start a system after a power interruption. Current existing types of semiconductor non-volatile memory have limitations in memory size, power consumption, or operating life that make them impractical for main memory. Development is going on for the use of non-volatile memory chips as a system's main memory, as [[persistent memory]]. Known as [[NVDIMM#Types|NVDIMM-P]], itwhich isstandard expectedhas to bebeen releasedpublished in 20202021.<ref>{{cite press release|url=https://www.jedec.org/news/pressreleases/jedec-ddr5-nvdimm-p-standards-under-development|title=JEDEC DDR5 & NVDIMM-P Standards Under Development|date=2017-03-30|publisher=[[JEDEC]]}}</ref><ref>{{cite press release|url=https://www.jedec.org/news/pressreleases/jedec-hold-workshops-ddr5-lpddr5-nvdimm-p-standards|title=JEDEC to Hold Workshops for DDR5, LPDDR5 & NVDIMM-P Standards|date=2019-09-05|publisher=JEDEC}}</ref><ref>{{cite press release|url=https://www.jedec.org/news/pressreleases/jedec-publishes-ddr4-nvdimm-p-bus-protocol-standard|title=JEDEC Publishes DDR4 NVDIMM-P Bus Protocol Standard|date=2021-02-17|publisher=JEDEC}}</ref>

==Early NVRAMs==