Hi All,
Why flash a 4MB flash takes so long time? I remember I flash a 2MB flash it only costs 1min.
P.S Different project.
Best regards, Boki.
Why flash a flash need 1 hour ...
Jun 06, 2006
7 Replies
Boki =E5=AF=AB=E9=81=93=EF=BC=9A
It is a 4 Mbit, low voltage, Serial Flash memory, with 50MHz SPI bus interface.
Are you complaining that the manufacturer's specified method takes an hour or an existing programmer takes a long time ?
Graham
Pooh Bear =E5=AF=AB=E9=81=93=EF=BC=9A
r or an
An existing programmer takes a long time. :)
Not resonable, unless the mcu is too slow.
or an
I suspect the programming algorithm in the programmer may not be optimal. I've seen different programmers take different times to program the same device.
Graham
Pooh Bear =E5=AF=AB=E9=81=93=EF=BC=9A
hour or an
I've seen
Thanks for information, in fact, I am using a low speed mcu to program, not PC directly..
Best regards, Boki.
A suggestion: look at the programming waveforms with a scope. Compare what you see- clock speeds, data setup and hold times etc.- with what the datasheet says is the maximum rate for the device. That will at least give you an idea where you can improve your algorithms.
Paul Burke
Paul Burke =E5=AF=AB=E9=81=93=EF=BC=9A
Thanks! :)
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