UFS – Universal Flash Storage is a drive specification for smart phones, digital cameras and similar devices. It’s the size of a (very) large fingernail and replaces earlier eMMC and SD card specifications. For example, a Micron UFS 4.0 card is 11 x 12mm in size with an extended one coming 9 x 13mm in size. UFS is SCSI-based, supports SCSI tagged command queuing and the standard is looked after by JEDEC. The JEDEC UFS standard refers to both embedded memory storage and removable memory cards.
Here is a table showing how the standard has developed;
Micron is building an extended UFS 4.0 card with more speed and SK hynix is developing a UFS 5.0 card.
