Quote Originally Posted by Darrel Taylor View Post
The 16F84A has a typical endurance of 10,000,000 writes.
It seems like a big number, but if you write every 100ms, that EEPROM location will stop functioning in 11.5 days.

Of course, that's the "typical" endurance. The minimum endurance is 1,000,000.
So it could stop working in as little as 1.1 days.
I have been observing intermittent success in flashing the program on a 18F4550 I am using, which I have been using for almost a year in a development board...probably 100,000 flashings.

Does intermittent flashing success mean that the chip is approaching its end of life cycle for the number of times the program has been burned to the chip?? How many programming cycles should I expect for an 18F4550 or 18F2550??