Does Cyclone 3 FPGA have thermal protection?

Hi JosephC,

You might misunderstand my question, sorry for not providing enough information. As I described, my device suddenly reseted few months ago (Ambient temperature was about only 30C). I doubted that one of many reasons might cause this issue was high junction temperature, but as you explained earlier, there is NO reset function on Cyclone III device. So I understand that Temperature is not the root cause.

Can you tell me different reasons might cause this issue (not the temperature reason)?Please see detailed description in my previous post below:

"Hi,

Thanks for answering my first question, what about my second question: "In which cases that EP3C40F324I7N will reset SOFTWARE only but not reset FIRMWARE?". We ran into problem as described below:

• We have 2 functions in project, one is Logging data (to external Flash) function, the other is to drive a servo by PWM signal.
• Few months ago, it seems like our device reseted SOFTWARE only because the Logging data function stopped working until the the SOFTWARE initialized successfully again. But the PWM function still worked (servo remained its current position for 4-5 seconds) until the SOFTWARE initialized successfully, and updated the default value to PWM register (the servo now turned to new position of default value). So we guess that the FIRMWARE still worked when the SOFTWARE reseted."

Thank you!