CM11A EEPROM longevity question.

Mar 21, 2006 4 Replies
CM11A EEPROM longevity question. open original PDF

I've read that the number of times an EEPROM can be rewritten before it fails can be fairly low (~1000) for some older EEPROMs.



Can anyone familiar with the EEPROM chip in the X-10 CM11A tell me if this is likely to be the case with the CM11A?



Thanks for your help.



Regards, Charles Sullivan



Mine all use a Microchip 24LC08B. The datasheet 24LC08B says it's good for

1,000,000 erase/write cycles. You should be able to rewite a memory location 10,000 times a day for 100 years.

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Charles Sullivan wrote:

Thanks Dave - much appreciated. (I have a user who is loading schedules twice a day and I wondered whether he might expect a CM11A failure after a couple of years for that reason.)

Regards, Charles Sullivan

Dave, your math is a bit off.... I calculated 27.4 times per day for 100 years. But the end result is the same... don't worry about wearing out the chip.

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