Can I overclock the nRF52832 from 64MHz to 80MHz?

[jswcomkr]

Hi, I am curious about overclocking of nRF52832.

The reference design of nRF52832 used 32MHz oscilators to get the 64Mhz system clock.

If change the XC oscillator from 32MHz to 40Mhz, can I get the 80MHz system clock?

Thank you.

[CheMax]

Most likely nothing will happen to the controller, it has a good margin of safety. But the internal systems will not work correctly. I suppose that the bluetooth, in principle, will cease to be visible on the air due to a frequency mismatch. And more likely, there will be problems with the flash memory. This is the slowest component of the system and it works at certain frequencies.

what is the meaning of such an increase in frequency? You will definitely lose in consumption without getting a significant gain in performance. It is better to write more optimal code.

regards, Max

[Vidar Berg]

The chip is designed to operate at 64 MHz. As Max pointed out above, the clock will offset the RADIO carrier frequency so the radio packets won't be visible if it even works at all.

[ketiljo]

Plus that the PLL that generates the system clock wont be able to lock at a much higher frequency.

[jswcomkr]

Thank you for your kind. I understand usage of XC osillator.