FPGA Device lifetime

Thanks ...

--- Quote Start ---

Unless you're permanently violating the recommended operation conditions, you can expect much longer lifetimes.

--- Quote End ---

how long? can it reach 5 years? more? or less?

there should be some kind of condition or way to calculate or determine FPGA lifetimes such as how it will treated in some temperature condition, overshoot level, and others.. and how about the number of configuration cycles? will it affect the FPGA lifetimes?

Is there any official document related to this lifetimes issue? I think user should know how long our FPGA lifetimes is?

Please help..

Thanks...