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CC3235SF: Curious about binary-code size difference between CC3235S and CC3235SF

Part Number: CC3235SF
Other Parts Discussed in Thread: CC3235S,

When I build the stock SimpleLink AT_COMMAND demo app for CC3235S, the result is 203KB. Building the CC3235SF version, the result is only 149KB. I know there is some flash/sram differences between the two chips, but I am surprise by the LARGE difference. This is not a problem - just want to learn more & understand the 25% jump in size.

  • In this example, the code is around 150KB and the data is around 50KB.

    In the SF device, the code runs from the internal XiP (1MB) flash. The data is is stored in the device's (256KB) RAM.

        So the flash contains 150K (code) and the SRAM contains 50KB (data)

    In the S device, both the code and the data are stored in the (256KB) RAM.

        So the SRAM contains ~200KB (code + data)

    Br,

    Kobi