Cyclone V AS configuration using Micron MT25Q

Hello Guys,

I also came across some problems using the MT25QL256 as configuration device for CYCLONE V.

I found out, that the configuaration fails, when the board is cold - lets say 0°C and below (the exeact value I cant say).

Then one can also observe that the nSTATUS pin toggles H to L repeatedly as an indicator that the FPGA can't load its configuration error-free out of the FLASH and repeats that process.

With rising temperature the repetition rate goes down and at some certain temperature the configuration process is done without errors.

For my opinion, this hints to a timing problem too.

Did you guys find any solution for the problems you described?

It would also be nice, if some INTEL professionals could state something here...

Best regards, Marco.