Crystal oscillator output sharing doubt.

[satiz]

Hi All,

Can I use single crystal output to two different Microcontrollers.

Example : Two MC operating at 12Mhz, Can I share one crystal for both.

 

[KlausST]

Hi,

yes, if you mean "crystal oscillator" output.

(a single crystal does not have a dedicated output)
If there sitll are doubts then you need to provide a schematic with exact part numbers and vendors.

Klaus

 

[std_match]

It may be possible to connect the crystal normally to one microcontroller (the "master"), and use the oscillator output pin to drive the input of the "slave" microcontroller.
It may be necessary to have a series capacitor before the input of the slave, and a separate DC biasing resistor between the oscillator pins on the slave.

 

[schmitt trigger]

Simple answer: no, for a crystal.

If you require a "master clock" for your system, the proper solution is, as Klaus has already mentioned, is to use crystal oscillator.

An example, there are many:
https://www.digikey.com/product-detail/en/abracon-llc/ASTX-H11-12-000MHZ-T/535-12043-6-ND/3907432