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Original question:

LAUNCHCC3220MODASF: Difference internal/external flash

LAUNCHCC3220MODASF: Switching from CC3220S to CC3220SF

Ravija Arora
Intellectual 540 points
Part Number: LAUNCHCC3220MODASF
Other Parts Discussed in Thread: CC3220S, CC3220SF

Hi,

We are using the CC3220S in one of our products and have reached the code size limit i.e. 240Kb (limited by the RAM size). 

We wish to put some additional features in our product and were exploring the options of using the CC3220SF instead of the CC3220.

- Please help us understand the meaning of the 1Mb XIP flash that this version (CC3220SF) has and also if any code or IDE level changes would be required to switch from the CC3220S to CC3220SF.

- We would also like to know the increased code size that we can work with using this version.

- Also, would the OTA libraries included currently in the project need any modifications

Regards

Ravija

  • 0
    TI__Guru 63006 points

    Everything should work for SF as it works for an S device. The only change is the memory mapping (linker cmd file).

    The file system will still require the use of an external flash (so OTA and programming looks the same).

    The difference is that currently you have internal RAM of 256KB for both code and data, with the SF device - the code will run from the internal XIP flash (so you'll have 1MB for the code) and the  entire 256KB will be used as data RAM.

    Br,

    Kobi