Why can't I choose extended temperature for the supported MAX® II device to perform timing analysis in the Intel® Quartus® software?

Description

Intel has supported the Extended Industrial temperature range for certain FPGAs that allow customers to use the selected devices in high-temperature environments. However, customers cannot select the extended temperature in the Intel® Quartus® software for the supported MAX® II device ordering part number.

Resolution

As for now, Intel is not planning to enable the extended temperature feature for selected MAX® II devices in the Intel® Quartus® software. This is because the product family is not recommended for new designs. Therefore, an update will be made to the related web page(s) and the relevant documentation to indicate that MAX® II devices no longer supports the extended temperature feature.