2 PICs driven by one Crystal problem

Closed Thread
Results 1 to 2 of 2
  1. - 9th August 2009, 09:44 #1
    ivanzop's Avatar
    ivanzop Guest

    Post 2 PICs driven by one Crystal problem

    Hi,
    I'm hoping some can help with the following:-
    I have a PCB that has two PICs on it. A 16F84A which has a 20Mhz steel case crystal and coupled to gnd via two 15pf caps. The CLKOUT for this PIC feeds into the CLKIN of a 16F876. The 16F84A program runs fine but the 16F876 does not. I have read the data sheets on these devices and believe that this should work. Has any one out there got any ideas? The CLKOUT of th 16F876 is not connected to anything. Regards Ivan
  2. - 9th August 2009, 15:40 #2
    Bruce's Avatar
    Bruce
    Bruce is offline Prolific Poster
    Join Date
    Jul 2003
    Posts
    2,405

    Did you find this post helpful? Yes | No

    Default

    Do you have the F84 set to HS and the 876 set for EC osc configurations?
    Regards,

    -Bruce
    tech at rentron.com
    http://www.rentron.com
« Previous Thread | Next Thread »

Similar Threads

  1. PIC 16LF722 + PIC KIT 2 //configuration problem
    By pomerol in forum General
    Replies: 7
    Last Post: - 15th December 2008, 05:18
  2. Multiple PIC's with 1 crystal
    By puma in forum Schematics
    Replies: 11
    Last Post: - 20th March 2007, 17:02
  3. Transceivers with 2 different PICs.
    By Eng4444 in forum mel PIC BASIC Pro
    Replies: 8
    Last Post: - 7th June 2006, 09:31
  4. help about connecting 2 PICs
    By micro in forum mel PIC BASIC
    Replies: 1
    Last Post: - 1st January 2006, 13:52
  5. 2 PIC's 1LCD
    By puma in forum General
    Replies: 2
    Last Post: - 3rd August 2004, 17:58

Members who have read this thread : 1

You do not have permission to view the list of names.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Forum Rules