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LP-CC2652R7: How to adjust the clock frequency of this MCU？

Nick Sun
Intellectual 2265 points
Part Number: LP-CC2652R7

Hi team,

Here's the request from the customer:

What customer wants to verify is the rationality of the parameter 65ua/MHz. In general, this parameter is strongly related to MCU Frequency, so he wonders if it is possible to modify MCU Frequency in the SimpleLink SDK? If this is not possible, how did TI engineers measure this parameter of CoreMark data which shown in the datasheet? If so, can you provide a verification method?

Could you help check this case? Thanks.

Best Regards,                                                       

Nick

  • 0
    TI__Guru**** 202096 points

    Hi Nick,

    The 65 μA/MHz running CoreMark parameter is from the measured Icore of an Active MCU running CoreMark at 48 MHz RCOSC_HF, 3.1 mA divided by 48 MHz is 65ua/MHz.  It is not possible to provide a lower frequency HF clock source as it is required for the radio.  The customer can modify the BIOS CPU frequency (compile or run time, see TI-RTOS 7 Configuration and Kernel User's Guide) but I'm not certain whether this will have any effect on power consumption.  The customer can utilize low-power modes during runtime operation.  I am looping in a SimpleLink HW expert to address the verification methods.

    Regards,
    Ryan