TMS320F28377S: TMS320F28377S: Does RAM retain its contents after external reset?

Eric Ribble93

Prodigy 120 points

Part Number: TMS320F28377S

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

over 4 years ago

0 Vivek Singh over 4 years ago

TI__Guru** 109125 points

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

0 Vamsi Gudivada over 4 years ago

TI__Guru* 84335 points

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

0 Eric Ribble93 over 4 years ago in reply to Vivek Singh

Prodigy 120 points

Thanks for your QUICK response. We will have to change our strategy.

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TMS320F28377S: TMS320F28377S: Does RAM retain its contents after external reset?