What have I to ask for when in my electronics shop : a parallel operation
20 Mhz crystal quartz ? What about the cutting type of crystal ? Is there
any page where all this is explained ?

Gracies !

Joan

>  -----Mensaje original-----
>  De: pic microcontroller discussion list
>  [mailto:PICLIST@MITVMA.MIT.EDU]En nombre de Peter L. Peres
>  Enviado el: sabado, 26 de mayo de 2001 10:07
>  Para: PICLIST@MITVMA.MIT.EDU
>  Asunto: [PIC]: My 16F877/20 enters in coma at 20 Mhz !!
>
>
>  Try a 20MHz crystal specified for parallel operation. Most 20MHz crystals
>  that are unspec'd are either series or 6.66 MHz 3rd overtone and will not
>  move at 20MHz without a tank circuit in a normal 'gate' oscillator.
>
>  Peter
>
>  --
>  http://www.piclist.com hint: To leave the PICList
>  mailto:piclist-unsubscribe-request@mitvma.mit.edu
>
>

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu