We are considering using the Colibri iMX7S/D or the IMX6ULL in our design, which has an expected lifetime of 30 years.
We anticipate problems if we let the system boot from the NAND flash on the SOM (due to read-distrub issues/NAND flash unreliablity). Hence we were looking into the possibility to let the module boot from an external NOR flash chip.
From the datasheets, it seems that it is only possible to change 1 boot parameter: Either to boot from SOM NAND or external SD memory. The NXP processors support booting from SPI NOR flash though.
- Is there a way to let the colibri modules boot from SPI nor flash?
- Are the fuses on the processors preburnt or is this flexible?
- What is the expected lifetime/ boots when booting from the embedded SLC NAND flash?
Thanks for your reply!