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CC2652R: Master clock CPU Configuration

Part Number: CC2652R

Hello,

I am working with the CC2652 SoC, using an external 48 MHz crystal. I would like to reduce this frequency for example to 12 MHz or less for reducing power consumption of the ARM M4F processor.

Is that possible ? or there are not an internal PLL in the chip?

I know that the sensor controller works at lower frequencies but I would like to configure the Arm M4F also in low operation frequencies (1, 2 or 4 MHz)

Best regards,

Sebastian