RFC: detect and manage power cut on MLC NAND

[Ricard Wanderlof]

On Thu, 26 Mar 2015, Jeff Lauruhn (jlauruhn) wrote:

> Let me explain the read process a bit.  When we program and erase too, 
> we set a target value L0 and L1 in the case of SLC and we get a 
> ...
> registers a 0 for that cell.  The sense circuit is very simple because 
> there needs to be 2K of them so we can sense the whole page 
> simultaneously.  The type of circuitry required to measure an analog 
> value would make the die huge.  If it was possible, it would already be 
> designed in.

> Instead of measuring the cell voltage, it was easier to allow the end 
> user to move Vread to maybe compensate for the shift in distribution.

Makes perfect sense. Thanks for the response!

/Ricard
-- 
Ricard Wolf Wanderlöf                           ricardw(at)axis.com
Axis Communications AB, Lund, Sweden            www.axis.com
Phone +46 46 272 2016                           Fax +46 46 13 61 30