CC2640R2F: How to change system clock?

Choongbeom You

Expert 1700 points

Part Number: CC2640R2F

Hello,

How to change system clock from 48MHz to 24 or 12 or 8?

Our project for a peripheral device based on TI RTOS example and

simplelink_cc2640r2_sdk_5_30_00_03.

Thanks,

Calvin

over 3 years ago

0 Jan over 3 years ago

TI__Mastermind 44500 points

Hi,

Thank you for reaching out. We will take a look at your query and get back to you as soon as possible. In the meantime, can you specify if you are using a LaunchPad or a custom board?

Best Regards,

Jan

0 Choongbeom You over 3 years ago in reply to Jan

Expert 1700 points

Hi Jan,

We're using a custom board for the product.

It has a 3V coin battery for power source and uses external xtal32k for RTC.

Thanks,

Calvin

+1 Kevin over 3 years ago in reply to Choongbeom You

Intellectual 350 points

Hi,

The 48MHz system clock can not be devided. why do you want to change the main clock frequency? If you hope to reduce power consumption,

the best way is to execute the program quickly then enter to low power mode. And the power consumption is lower than deviding system clock.

Regards,

Kevin

0 Choongbeom You over 3 years ago in reply to Kevin

Expert 1700 points

Hi Kevin,

Yes, it's about to reduce power consumption.

I will refer to your advice.

Thanks,

Calvin

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CC2640R2F: How to change system clock?