Renesas SLG46826 GreenPAK SPLD, what are the three memory regions used for?

[zapta]

The SLG46826G has three memory regions, each with 2048 bits. What each region is used for and what are the difference between them.  I do understand how a set of 2048 bits configures the devices but am not sure why three areas instead of one.

https://www.mouser.com/datasheet/2/698/REN_SLG46826_ds_3v18_DST_20230226-3075827.pdf

[ataradov]

First is the actual SRAM configuration, it is loaded from the second on power up or programmed manually from I2C. Second is the persistent configuration storage. Third is just a spare EEPROM, can be used as a regular EEPROM to store arbitrary data. It is not used by the device itself for anything.

[zapta]

Thanks Alex, this is very clear.