XT or HS for PICs

Thread Last Poster Posts Pages Last Post   Closed: New threads not accepted on this page

Author Message   davel Regular Contributor Username: davel Post Number: 37 Registered: 11-2005 Rating: N/A Votes: 0 (Vote!) Posted on Wednesday, 03 February, 2010 - 05:00 pm:    I have just finished a project using a 16F866. The text book I have says it is ok to run the oscillator up to 8 Mhz in XT mode. This is what I have used with an 8Mhz Xtal and two 33pF Capacitors it works fine ! I have just read another article which states that HS mode should be used above 4 Mhz. Could anyone tell which is right? Which is best? and if the capacitance would nedd to be changed? Thank you. Dave   violin Regular Contributor Username: violin Post Number: 30 Registered: 11-2008 Rating: N/A Votes: 0 (Vote!) Posted on Wednesday, 03 February, 2010 - 06:01 pm:    Yes, The ball-park figure is HS (High Speed) above 4MHz. Regards Edit: Opps missed the cap bit. I use 22pf for all. Even for 80MHz (overclocking) clock speed. (Message edited by violin on 03 February, 2010)

Administration Log Out   Previous Page Next Page