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CC1101: CC1101 issue and replacement

Gatsu
Prodigy 180 points
Part Number: CC1101
Other Parts Discussed in Thread: CC1200, CC1312R, CC1310

Hi everyone,

I've got an issue with CC1101.  I use it with a pic18f in SPI mode.

The problem is that for some purpose I need a system uptime about several days, and the CC1101 sometimes finished to “crash” after some days and need to be “hard reset by powered OFF and ON” to operate again. And it's a real problem for me. Except this, everything works well during several days, and I already had a look on the erratas documentation. So I wonder if there is a new model with a better reliability?

I need a really simple link at 868MHz and transmit and reveive few bytes but I really need it to be reliable.
Do you have a suggestion of a pin to pin compatible “more modern, simple, and reliable” device?

I also have a question for future designs:
I noticed that there are some device like the CC1200 with integrated SAW and IF filters, but I don’t find the technical characteristics of this SAW . Can you please tell me where I can find this information?

I mean, like the information in the datasheet (relative attenuation, etc… )  of this SAW component for instance:

uk.rs-online.com/.../0900766b804ed075.pdf

Best regards

  • 0
    TI__Mastermind 27145 points

    Hi,

    Did you debug why it is crashing?

    No Pin to Pin Compatible device is available to CC1101. Yes, CC1200 is the latest Transceiver.

    CC1310 and CC1312R are the latest Wireless MCUs. You can refer to their data sheets for more details.

    CC1200 doesn't have Integrated SAW Filter. It has integrated LPF and Channel filters.

    Please refer to Selectivity and Blocking Specs (Table 4.10.2) in the CC1200 data sheet for Filter Characteristics.

    Thanks,

    PM

  • 0 in reply to PM
    TI__Guru**** 317180 points
    Define “crash”. Are you unable to communicate with the chip over the SPI interface in this state? What is the power consumption in the state?

    CC1101 is uses in a very large amount of systems and we have not seen any issues with the device. This sounds like a software bug.
  • 0 in reply to TER
    Prodigy 180 points

    I don't have C1101 cards with me anymore for the moment and I managed in the past  to have it working quite well (I did this design in 2008 if I remember well) .. the issue still exist but is very rare.. 

    But when it "crash" I have to "reset" it because I'm unable to communicate with SPI interface in this state.. I don't know how is the consumption state .

    For now I'm not able to search why I still have sometimes this issue, but as I said, for this "old" product , it's frozen for the moment.

    But as I will begin a new design, I'm looking for another and more modern solution.

    I think I will go for the CC1310 .