piclist 2001\03\05\173618a >
Thread: 16F877 -- Why an EEPROM?
www.piclist.com/techref/microchip/memory.htm?key=eeprom
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face BY : Mike Mansheim email (remove spam text)



> I'm considering moving from the PIC 16C65B and PIC 16C67 to a FLASH
memory
> microcontroller.  I've been looking at the 16F877 and I can't really
figure out
> why anyone would need an EEPROM when apparently it's just as easy to read
from
> and write to the program memory.  Is it a matter of code protection
(i.e., no
> danger of stomping on critical code)?  Any thoughts?

The number of writes allowed is much higher on the data EEPROM.
Per an older F876 data sheet (I assume the F877 is the same):
Endurance for the data EEPROM is 100,000 cycles; endurance for the program
flash
memory is 1000 cycles.

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