S32K118 - Emulated EEprom initalization time

[zubizeratta]

Hello,

I am trying to find the initialization time ( the time that it is ready to read all EEPROM - 2KB from NVRAM) of the Emulated EEPROM area when it's configured to use 2 KB EEPROM and 32KB Backup memory. Is it already defined in the datasheet or somewhere else?

[Robin_Shen · Accepted solution]

Hi

According to AN11983: If the EEE is enabled, then the state machine loads the FlexRAM with EEE data from the E-flash during the system boot. The amount of time needed to copy data from the E-flash into the FlexRAM can vary depending on the configured size of the EEE and the amount of backup E-flash that needs to be parsed.
E-Flash content is copied down into FlexRAM (EEERAM) after power on reset.

Please find the spec tsetram in the S32K Datasheet. Basically the time would correspond to the Set FlexRAM command with Control Code 0x00, which makes FlexRAM available as EEPROM and copies all data from backup FlexNVM memory to the FlexRAM memory.

Best Regards,
Robin
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