Does Cyclone 3 FPGA have thermal protection?

Hi,

First of all, thanks for using Intel forums to address your question. On the follow up question, we've been discuss this with several application engineers internally on how to deal with the out of range temperatures value. As we may know Cyclone III temperature range is between -40C to 100/125C depends on devices, it is actually strictly not recommended to test your devices out of those ranges and conditions.

Operated in such high temperature (150C), there is no guarantee on what will occurs where we might get performance issue and there is a high risk of chip damage. We don't have a reset function specifically for this device running beyond the supported temperature range. You devices ( EP3C40F324I7N) supported up to 125C because it was an extended temperature device. Refer to the details here:

https://www.intel.com/content/www/us/en/products/programmable/temperature.html

In order to better design your product, we recommend you to refer to thermal management guide as below:

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/an/an358.pdf

So, we would suggest that the device thermal power or cooling alternative used should resulted in within the range of supported temperature to gain performance optimization. This has been recommended by our peer (Anand) 10 days ago at the first reply. I hope this helps.

Thanks,

Joseph

Intel Customer Support