RM57L843: Data storage through reset

user5018898

Part Number: RM57L843

Hi,

Is there a recommended method for storing data that is persistent though a reset? We have been storing data at high ram but this is not working reliably.

Thanks,

Jose

over 4 years ago

0 QJ Wang over 4 years ago

TI__Guru**** 198766 points

Hello Jose,

The flash bank 7 can be used as an emulated EEPROM (FEE). You can save the data to EEPROM. The size of bank 7 is 64KB, and the FEE algorithm requires at least 2 virtual sectors for storing the data, so the maximum size of each virtual sector is 32KB. If your data is more than 32KB, you can program the data to flash ban0 or bank using F021 flash API.

0 user5018898 over 4 years ago in reply to QJ Wang

TI__Intellectual 770 points

Hi QJ,

With regards to flash bank 7, it is my understanding that there is a maximum number of write cycles, so we would prefer to keep this as a back up option. Are there any alternatives to this?

Thanks,

Jose

0 QJ Wang over 4 years ago in reply to user5018898

TI__Guru**** 198766 points

Hello Jose,

The Write/erase cycles with 15-year Data Retention requirement is 100K for Bank 7, and 1K for Bank0/1.

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RM57L843: Data storage through reset