Comparison reviews

Kioxia demonstrates HLC 3D NAND and talks about OLC NAND

This The best solid state drive Currently using TLC or QLC memory. Kioxia (formerly Toshiba Memory) is the first 3D NAND manufacturer Start talking about 5 digits per unit (5 bpc) PLC (five-level unit) 3D NAND memory as early as 2019. Kioxia’s scientists and engineers certainly don’t want to be satisfied with their laurels. This year they demonstrated 6 bpc — six-level cell or HLC — 3D operating NAND memory, and believe that even 8 bpc — eight-level cell, or OLD — 3D NAND is also possible of. But there are some important nuances.

In order to store more than one bit per cell, NAND memory must maintain multiple different voltage levels in the cell. For example, MLC has four states per cell, TLC uses eight voltage levels, QLC has 16 voltage levels, and PLC has 32 voltage states. In other words, no matter what cell level you are talking about, both are affected. To store 6 bits per cell (HLC), the cell must store 2^6 or 64 voltage levels.

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *

Back to top button