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CC1352P7: TI15.4 Stack - Max Number of Devices

Part Number: CC1352P7
Other Parts Discussed in Thread: CC1352P

Hey everyone,

I've been studying the TI15.4 Stack for a while and there's something I still don't understand, which is the possible maximum number of devices (network size), I know this depends on memory limitations and therefore the device type being used (at least on the collector device). But I've been seeing different numbers on different places, sometimes there are references to 150 devices, sometimes 250 devices, and even 1000 devices. 

If we ignore the application type and requirements, my questions are:

1 - Does the maximum number of devices depend on the network mode (beacon, non-beacon, FH)? If so, what would be a realistic max number of devices for each mode considering CC1352R1 devices?

2 - If we consider the new CC1352P7 devices which have more memory, are there any new increased figures or projections for network size?

Thanks

  • Hi Joao,

    The main factors here are

    a) Security level. If you want to use security, the collector needs to store keys and other information to each device, limiting the number of devices it can fit.

    b) Collector available memory. In some cases we have recommended using a coprocessor approach.

    1. No.

    2. Yes, the CC1352P7 as a collector will be able to handle a larger network than CC1352P. The most important parameter is RAM. On CC1352P7, we have increased the device RAM to 144 kB (compared to 80 kB). We haven't done any calculations, projections or tests but with a 80% RAM increase it should be a considerable improvement.

    Cheers,

    Marie H.

  • Ok, thank you.