External reference in Low voltage

[M_M]

When I power my MC13213 whit a voltage under 2,5/2,6 V, the micro do not find the external reference clock. Someone known this problem? Thanks

[M_M]

I think the problem it's about the micro. In the prototipes that has the problem, I change it and now they run until 2,0/2,1 V. The question is: what will appen when I'm start to produce the cards?
Thanks for yours answers.

[jamie]

Maybe a bit more detail about your external reference clock and the 2.5/2.6 power supply.

[peg]

Hi M&M,

Do you mean the CLKO from the radio is not working (you can't measure it) or it is there and the MPU section acts like it is not there? Or something else completely?