I am surveying a serial flash for storing data. I found the datasheet do not definitely mention the flowwing issues:
Is anyone can tell me? Grateful to any comment. Thanks.
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
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