nrf52840 HFXO 64MHz oscillator voltage specifications

[khunckl]

I am currently involved with a project using the nrf52840.  Page 96 of the Product Specification document (4413_417 v1.1) shows the electrical specifications for the HFXO.  However, missing from that electrical specification section is the amplitude voltage required from an external crystal.  What is the required voltage to be seen at pins XC1 and XC2 of the HFXO?  Or is there another document that would provide more detailed information about voltage levels for the XC1 and XC2 pins?  Thank you!

[khunckl]

Thanks, is there any documentation, outside of the Product Specifications, that would detail the voltage levels?

[Jared]

Hi,

None public available. An example of a crystal that satisfy the specs is the one we use on the nRF52840 DK, the MP06003.

regards

Jared