Looks like I was wrong. You should be able to use that. You will need to create nodes to read & write the data. Both will need to include EEPROM.h, which you will need to manually install under
<user>\AppData\Local\Programs\xod-client-electron\resources\arduino-libraries. You will need to re-install these headers any time you update XOD. If you make the nodes generic (accept address & data as input/output), you can submit it as a new library. Developers are working on a way to provide header files, but for now they will need to be copied manually. gweimer/ir-remote is an example of how I tried to handle the header files (include them in the library under a folder that tries to give path to copy it to).
Note that EEPROMs have a limited number of write cycles. Too many writes, and your AVR chip will quit working. Writing to the EEPROM several times per second would be a bad idea.