topic Re: OSC does not work over 85 degree in S12 / MagniV Microcontrollers

OSC does not work over 85 degree

jtpark — Wed, 27 Jul 2016 08:32:59 GMT

To whom it may concern,

I am using S12XDP512F0MAL, but OSC doesn't work over 85 degree.

I checked "EXTAL" pin, but there is no pulse.

I am using "full swing pierce oscillator connection" mode.(PE7=0, 8MHz)

I checked osc spec, and it support automotive spec.

Do you have any similar case?

Would you provide solution for this?

Thanks.

jtpark — Thu, 28 Jul 2016 01:01:24 GMT

Hello,

I am using 8MHz.

I'd like to know value of each part. (C1,C2,RB,RS)

Could you suggest these parts ?

Your support will be deeply appreciated.

Thanks.

iggi — Thu, 28 Jul 2016 09:11:44 GMT

Hi J.T.

The component values in crystal oscillator circuitry are specified by crystal manufacturers.

For more info about this subject you can check the following application note Crystal Oscillator Troubleshooting Guide

Also some useful info you can find in AN3262 Designing Hardware for the MC9S12X D-Family

Regards,

iggi