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CC1310: CC1310 operating on 1V8 1.8V

eric wilson
Prodigy 30 points
Part Number: CC1310

We are converting a CC1310 design we have working fine at 3V3 to 1V8 and are thinking we need to connect VDDS and VDDR together and those to 1V8.  And see contradictory details about connecting DCDC_SW to ground or leave it unconnected.

 

Also we see (someplace at one time) that there is a register that needs to be changed - I can't find that reference again anywhere.

 

Any advice would be appreciated!  

 

Thank you

  • 0
    TI__Genius 12275 points

    Hi,

    Please can you clarify:

    • Are you asking about using the External Regulator Mode for this (the wording is a bit unclear)?
    • In which resources are the details condradictory for this?

    The different power supply configurations are detailed in Section 11 of SWRA640 (CC13xx/CC26xx Hardware Configuration and PCB Design Considerations): https://www.ti.com/lit/swra640

    Regards,

    Zack