Quote Originally Posted by mvs_sarma View Post
please go thro the datasheet Ds35007B in respect of PIC16F84A-4/20-- figures 9-1 and 9-2 and relevent comments. it is however possible as per the datasheet but voltage restrictions apply , i beleive.

for PIC16F628A, it is possible to have any crystal.

In both cases appropriate config commet to be moddedas you know already
Thank you.