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CCS/CC2642R: Can I Change the CPU Frequecy

bin meng
Prodigy 240 points

Part Number: CC2642R
Other Parts Discussed in Thread: CC2640

Tool/software: Code Composer Studio

Hi ,

I want to know that can I change  the cpu frequecy (48MHz)  when I use CC2640 or CC2642 ?

bmeng

Best Regard!

  • 0
    TI__Guru**** 317180 points

    If you look at the current consumption numbers for the MCU you will see that it consist of two parts, one constant and one that is a function of clock frequency. Meaning that if you run a given function you will end up using more current to run the function if you lower the frequency to the MCU. For CC2640/ CC2642 you will be the most energy efficient  if you run the MCU at max speed and go to sleep after finishing the processing of the given function. Reducing the MCU clock speed is therefore not supported. 

  • 0 in reply to TER
    Prodigy 240 points

    thanks for your reply !