MAX® 10 cannot write pof in the following situations.
When the CFM of MAX 10 is empty.
When first purchased or after Erase, pof cannot be written, so please write pof after writing sof once.
When nCONFIG, nSTATUS, or CONF_DONE is low during Power-ON
POF cannot be written when any of the above pins are low during POR
Normally, this is not a problem because the recommended process is pull-up, but the above pins can be used as USER pins. However, since the above pins can also be used as USER pins, be careful not to set them low during POR.
When the JTAG pin sharing function of MAX 10 is turned on, check the following
Cautions for using the JTAG pin as user I/O with MAX® 10
https://www.macnica.co.jp/business/semiconductor/articles/intel/133610/
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Category: Programming/Configuration
Tool: Quartus® Prime
Device: MAX® 10