The reprogrammable lifetime is in the datasheets.  It is called
     "Endurance" and is specified in terms of E/W meaning erase/write
     cycles.  It is min 1Meg and typ 10Meg for data memory.  It is min 100
     and typ 1000 for program memory.  Data memory uses a redundant coding
     method to increase the endurance above that of the program memory.

     Rgds, Brian.


______________________________ Reply Separator _________________________________
Subject: Re[2]: 16c84 reprogram cycle life?
Author:  David Tait <david@comms.ee.man.ac.uk> at Internet_Exchange
Date:    1/28/97 5:48 PM


Hi Brian,

> Yes, it is the same technology.

Thanks for letting me know.  I guess I would need to know a lot
more about the physics of the failure mechanisms and something
about statistics before I could use the test memory as a reliable
measure of EEPROM endurance.  Having 8 spare locations to play
with helps I suppose.  Do you think it would be possible to
predict the reprogrammable lifetime of a particular PIC with
any accuracy?

Cheers,

David