I am looking for someone who would modify the schematics and PCB layout in the following reference design [url removed, login to view] . The idea is to add external EEPROM/flash memory to the MCU, so you need to update the provided Altium schematics and PCB layout. You should be careful to leave some pins on the part in a defined state so the memory stays enabled and ready to communicate. You must guarantee that the solution will work for sure, so MCU will be able to communicate via SPI with external memory.
I am opened for suggestions about which memory to choose, but I believe that S25FL256SAGNFI001 or N25Q256A13EF840E should be a good choice.