Replace 32 Mhz crystal with 8 Mhz crystal on the nrf52832?

[uC_newbie]

Hi,

i was just wondering as we dont need the high clock rate whether its possible to run the nrf52832 with less than 64 Mhz by replacing the 32 mhz crystal with a different crystal with a lower clock frequency?

thank you :)

[Daniel Wang]

You don't use BLE?

[uC_newbie]

We will in the future, yes. It is needed for that? (have not yet looked into BLE in detail) If so then my this settles this, haha.

[Sigurd]

Hi,

You can only run the CPU at 64MHz. Using a 64MHz clock will execute your tasks faster and overall you wont save power reducing the clock speed. It is therfore not implemented any options to use a different clock frequency for the CPU. If you are using BLE, you have to use an external 32 MHz crystal with a frequency tolerance of max 40 ppm.

[uC_newbie]

Thank you very much!