I am designing with the 16 pin S08QE8 and plan to use an external oscillator (not a crystal or resonator). Do I drive the EXTAL pin with the oscillator output and leave the XTAL pin hanging or is there another setup that should be used?
Thank you very much for your time
Thank you both very much
Hi Matthew Scott,
Welcome to the forum.
Do I drive the EXTAL pin with the oscillator output and leave the XTAL pin hanging?
Yes.
Hello,
An additional consideration may be, that if ICSC2_EREFS bit is set to zero, the XTAL pin should be available as GPIO.
Regards,
Mac
bigmac wrote:An additional consideration may be, that if ICSC2_EREFS bit is set to zero, the XTAL pin should be available as GPIO.
Good point. You do not need to "leave it hanging". You can do something useful with it.