Calculating the Maximum Density and Equivalent 2D Design Rule of 3D NAND Flash

Calculating the Maximum Density and Equivalent 2D Design Rule of 3D NAND Flash
by Fred Chen on 02-21-2021 at 10:00 am

3D NAND Flash unit cell

I recently posted an insightful article [1] published in 2013 on the cost of 3D NAND Flash by Dr. Andrew Walker, which has since received over 10,000 views on LinkedIn. The highlight was the plot of cost vs. the number of layers showing a minimum cost for some layer number, dependent on the etch sidewall angle. In this article, the same… Read More


Did we forget non-volatile memory?

Did we forget non-volatile memory?
by Don Dingee on 10-15-2014 at 7:00 pm

In our rush to shrink SoC nodes more and more to achieve better performance and more complex devices, we may have forgotten a passenger in the back seat: non-volatile memory. There has been little discussion of this in the pages of SemiWiki until now. Let’s give it a closer look.

Embedded flash has usually been associated with microcontrollers,… Read More