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Discussion Groups | 68HC12 | 9S12DP256 Flash prog and erase cycles

Join our technical discussions about Freescale Microcontrollers: M68HC12. (Freescale Semiconductor is a Subsidiary of Motorola).

9S12DP256 Flash prog and erase cycles - Clau...@ Ciudad - Nov 20 11:54:00 2002

Hello,
I need to know how many (in practice) times I can erase and programm the
flash of 9S12DP256.

TIA
Claudio Imberlina





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Re: 9S12DP256 Flash prog and erase cycles - Donald E Haselwood - Nov 20 19:16:00 2002

Claudio,

The number of cycles depends greatly on the temperature. At a recent
seminar on the 9S12 series they showed a slide that put the number of
cycles somewhere around (I don't have my notes handy) 300K-400K at 25 deg C
(for < 200ppm failure), and made the comment that the newer parts are even
better. A comment was also made that they were starting to show these
"practical" figures, rather than just the worst-case guaranteed figure,
since some of the competition shows room temp cycles, which when compared
to the Mot worst-case figures, makes the Mot parts look bad, when in fact
the Mot flash is really superior.

Regards,

Donald E Haselwood

At 01:54 PM 11/20/02 -0300, you wrote:
> Hello,
> I need to know how many (in practice) times I can erase and programm the
> flash of 9S12DP256.
>
> TIA
> Claudio Imberlina >
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Re: 9S12DP256 Flash prog and erase cycles - Peter Lissenburg - Nov 20 20:56:00 2002

Well, has anyone actually worn out the flash on any of these devices yet?
(In development conditions that is.)
I have a device here, that has been programmed at least 200 times and no
problem. Chances are I'll accidentally let the magic smoke out, before I
ware it out.

Not much, but I hope it helps a little.
Peter L.

At 03:54 AM 21/11/02, you wrote:
>Hello,
>I need to know how many (in practice) times I can erase and programm the
>flash of 9S12DP256.
>
>TIA
>Claudio Imberlina



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