HTCC-AB01 RTC memory?

Can anyone confirm whether the HTCC-AB01 / SX126x has RTC memory (or more correctly… whether variables can be stored in non-volatile memory directly on the device?)

My current project requires retention of a few variables following deep sleep cycles (incrementing an interrupt counter and then periodically transmitting the result). Saving to EEPROM isn’t a workable long-term solution (too many writes). Open to other techniques or suggestions.

Links I’m finding (and following) to Heltec documentation result in 404 errors. I figured before I start posting code, I’d ask whether what I’m chasing is even possible with this chipset. Thanks in advance!