What kind of cell is there in a Serial flash?

Hmm... Here "serial" means SPI. e.g. Serial Flash from ST:

Serial Flash from Chingistek:

Serial Flash from ATmel:

How about the Bad Block Management. Is it neccessary?

If the blocks are not power-of-two sized eg 528 then the extra bytes are intended for error correction, which means errors are to be expected.

Peter

Good Point. :)

What point? Please quote the context so us mortals can follow.

Peter

Sorry! (I miss press the reply butt> If the blocks are not power-of-two sized eg 528 then the extra bytes are

I've been told by an authoritative source that SST serial flash uses exactly the same NOR structure as their parallel flash.

I finally found that almost all Serial Flashes uses NOR gates in their memory cells. Error correcting mechanism is not necessary for NOR type flashes. The wear-leveling is easy since NOR flash is byte- programmable and leaving the factory with no bad memory cell.

Thanks for all you. Thank you.

Jim Stewart wrote:

What happened to proper attribution. If I'm talking dingo's kidneys then at least tell everyone who said it!

operates.

No, of course not, but it is a hint at how the manufacturer expected the device to be used. Now it code be that the device is a NOR device that emulates a NAND part... And... OK... do you know of any NOR parts that use non-power-of-two sectors or NAND parts that use power-of-two but don't internally do the error correction?

Indeedly-doo!

in

better

OK, so that answers my question above.

Yep.

Can be very useful.

Peter