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Scenario for TMS320F28377S:
1. Write a value to a RAM location.
2. Apply an external RESET to the device.
3. After the RESET, does the RAM location still contain the contents written in step #1 above?
We are trying to store a value in RAM that will be remembered after an external reset. The power supplies to the device are maintained good the entire time.
Thanks.
Eric
Eric,
No, on this device RAM does not retain content after external reset. We have RAM INIT routine in BOOT ROM which clears the RAMs on reset which toggles XRSn pin.
Regards,
Vivek Singh
Eric,
A reset causes the device BootROM to get executed. BootROM initializes all the RAMs and hence the data will be lost.
Can you store the data in Flash? You can program the data in Flash using Flash API. Flash will retain the data.
Thanks and regards,
Vamsi