At the recent AVR Seminar in Melbourne, during the networking time, I was speaking with a user of tiny2323's who has had problems with some tiny2313's, where some would just crash after sometime of operation whereas some operate flawlessly.
He has some hundreds of unit in operation and has collected quite a number of "faulty" units, although these units work quite OK in other application.
In fact he has dealt with ATMEL, whom have tested some of the "faulty" units and verified that they were within spec, despite that the consistently fail in service.
He is going to send me some of the MCU's to have a "play with"
I suspect that this will be conundrum.
a) Too many working units for the hardware & software to be suspect.
b) Too many Tiny2313's which when replaced make the units reliable.
c) The suspect Tiny2313's are entirely within spec.
So whilst I have some ideas that I will explore any ideas on the three premises?
The units are used in some sort of 3 phase to 1 phase conversion unit.