Nand technology has some issues, which I find it a bit difficult to understand. It is said in nand devices that manufacture guaranty that a page will have no more than X (4/8/16,etc according to nand device) failed bit.
- Is it that the manufacture can really guarantee that there shall never be more than this amount of failed bits is a single page ?
- Is it that the failed ecc happens just randomly, after some time ?
- Is it that re-program the failed ecc page, shall recover its flip bits to the correct value ?
Thank you, Ran