He MAO,
There are two methods to manually STORE or RACALL for nvSRAM.
1. hardware method
a. Drive the nHSB pin Low to STORE the contents of the SRAM to non-volatile memory.
b. REACALL the contents of the nonvolatile memory to the SRAM on power-up.
2. Software method
a. STORE/RECALL can be performed by reading data from a specific address in sequence.
Refer to the "Device Operation" section of the datasheet for details.
Regards,
Shimamura
