4017 counter and pic


Results 1 to 2 of 2

Threaded View

  1. #2
    Join Date
    Sep 2004
    Location
    montreal, canada
    Posts
    6,898


    Did you find this post helpful? Yes | No

    Default

    Maybe not 0 as default, but for sure 0 after a reset. Look at the Functional Truth Table (page 2 of the following PDF).
    http://www.onsemi.com/pub_link/Colla...MC14017B-D.PDF

    Clock Enable can be connected to Vss all the time, so the output will shift at each clock rising edge.

    What i would do is to connect Reset and Clock on the PIC, and Clock enable to Vss.

    Check PDF page 3, Output Drive current... not a good idea to use this chip as is to drive LEDs... maybe you have high efficiency ones? Spec might be different from brand to brand though... worth a look.
    Last edited by mister_e; - 28th May 2008 at 15:14.
    Steve

    It's not a bug, it's a random feature.
    There's no problem, only learning opportunities.

Similar Threads

  1. assembly in Pic
    By lerameur in forum Off Topic
    Replies: 11
    Last Post: - 1st May 2008, 20:06
  2. 20 Digit Virtual LED Counter
    By T.Jackson in forum Code Examples
    Replies: 9
    Last Post: - 19th November 2007, 05:02
  3. How to set TMRO & TMR3 as Counter?.
    By NatureTech in forum mel PIC BASIC Pro
    Replies: 21
    Last Post: - 18th May 2007, 08:52
  4. Microcontroller with 2 way paging application problem
    By oneohthree in forum mel PIC BASIC Pro
    Replies: 30
    Last Post: - 20th April 2007, 17:27
  5. Frequency Counter using PIC and PicBasic
    By PICtron in forum mel PIC BASIC Pro
    Replies: 31
    Last Post: - 28th January 2005, 06:20

Members who have read this thread : 0

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

Posting Permissions

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