The 0.5F2 Memory Cell
Memory cells are often compared on the basis of a measure termed F2 , or “feature size squared”. The F2 measure permits comparison of memory cell sizes regardless of the process technology used for manufacturing. The smaller the F2 measure, the more memory cells per unit area.
Example F2 measures for major memory technologies:
- DRAM 8F2 or 6F2 cell size
- SLC NAND Flash 4.5F2 cell size
- MLC NAND Flash 2.25F2 cell size
Unity's CMOx™ memory technology, in a multi-layer cross-point array architecture using MLC, achieves an industry leading cell size of 0.5F2.
