There is a potential problem with read/write cycles.  They are not
infinite.  Check the datasheet, it's on the order of 10,000 or 100,000.

Even if it's as low as 10,000, you could erase and re-write the entire
flash three times a day for ten years before running into the flash
lifetime.

-Adam

John Hansen wrote:

> Isn't there a potential problem here with a limited number of read/write
> cycles?  Or was that changed with the 18 series?
>
> John Hansen
>
> At 02:47 PM 7/2/2003 -0400, M. Adam Davis wrote:
>
>> Might be cheaper (and faster...?) to upgrade to a PIC with more flash
>> memory on board.  I've got a 18f252 where the code takes up 2Kbytes, and
>> I've got 30k bytes for the data logging memory.
>>
>> Accessing is single cycle per byte.  Writing is 2mS per 8 bytes.
>> (fairly slow, actually, but perhaps it's fast enough for your needs...)
>>
>> -Adam
>
>
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