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Altera_Forum's avatar
Altera_Forum
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10 years ago

Cyclone IV fails to configure below -20C

I have a Cyclone IV design that operates correctly down to -20C but fails to configure below that temp. I have attached the schematic for the configuration block along with a scope trace showing co...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

I did notice I have the MSEL pins tied to 3.3V instead of 2.5V (VccA). This was copied from another design which does work to below -40C so I don't think that is what is causing my problem.