HXFO pin capacitance (Cpin)

[MURAKAMI KAZUHIRO]

nRF54LM20A: 

C_pin is the pin input capacitance on pins XC1 and XC2.

Could you provide the typical, maximum, and minimum values of Cpin?

This information is needed as a reference for external 32 MHz crystal tuning.

[MURAKAMI KAZUHIRO]

Hi

Based on the above equation, I would like to know the load capacitance (CL) for the maximum and minimum values of Cpin. Therefore, could you please provide the upper and lower limits of Cpin?
My understanding is that Cpin is different from the internal capacitor.

[Simonr]

Hi

The Cpin should have as little variation as possible, so it's safe to set Cpin in this formula to 3.1pF. Is there a specific reason you need the upper/lower limits?

Best regards,

Simon

[MURAKAMI KAZUHIRO]

Thank you for reply.

Understood. Since the variation is small, it means we don’t need to worry about the upper and lower limits, correct.

best regards,