If - then statements

Closed Thread
Results 1 to 13 of 13

Hybrid View

  1. - 18th May 2006, 14:04 #1
    sayzer's Avatar
    sayzer
    sayzer is offline SuperMod
    Join Date
    Jan 2006
    Location
    Istanbul
    Posts
    1,185

    Did you find this post helpful? Yes | No

    Smile Let me add some resistors to your schematic

    Pull up resistors as attached would be much safer.



    -------------------
    Attached Images Attached Images  
    "If the Earth were a single state, Istanbul would be its capital." Napoleon Bonaparte
  2. - 18th May 2006, 16:52 #2
    Dwayne's Avatar
    Dwayne
    Dwayne is offline Senior Member
    Join Date
    Dec 2003
    Location
    Wichita KS
    Posts
    511

    Did you find this post helpful? Yes | No

    Default

    Sazer is right.. Pullup resisters will help....

    Or, you can use internal pull up resisters. in the chip.

    Dwayne
    Ability to Fly:
    Hurling yourself towards the ground, and missing.

    Engineers that Contribute to flying:
    Both optimists and pessimists contribute to the society. The optimist invents the aeroplane, the pessimist the parachute

    Pilots that are Flying:
    Those who know their limitations, and respect the green side of the grass...
  3. - 18th May 2006, 20:04 #3
    Russ Kincaid's Avatar
    Russ Kincaid
    Russ Kincaid is offline Member
    Join Date
    Jan 2006
    Location
    New Hampshire, USA
    Posts
    107

    Did you find this post helpful? Yes | No

    Default

    Thanks, I will figure out how to use the internal pullups. But, back to the frequency; I could replace the calibration data if I knew where it was, but have not found that info yet. Does anyone know?
  4. - 18th May 2006, 20:25 #4
    Darrel Taylor's Avatar
    Darrel Taylor
    Darrel Taylor is offline Fanatical Contributor
    Join Date
    Jul 2003
    Location
    Colorado Springs
    Posts
    4,959

    Did you find this post helpful? Yes | No

    Default

    There is no calibration register for the 627A's internal oscillator.

    Several other chips have an OSCCAL register that allows you to Tweak the frequency a little. But not the 627.

    You only have 2 choices, an approximate 4mhz, or an approximate 37khz.

    No tweaking allowed.
    <br>
    DT
  5. - 18th May 2006, 22:57 #5
    Russ Kincaid's Avatar
    Russ Kincaid
    Russ Kincaid is offline Member
    Join Date
    Jan 2006
    Location
    New Hampshire, USA
    Posts
    107

    Did you find this post helpful? Yes | No

    Default

    Thanks, Darrel. I guess the alternative is a crystal, but for now I will just make an adjustment for time.
« Previous Thread | Next Thread »

Similar Threads

  1. How much code space do PBP statements use.
    By Darrel Taylor in forum Code Examples
    Replies: 5
    Last Post: - 13th February 2009, 21:31
  2. if-then statements
    By CrazyCooter in forum mel PIC BASIC Pro
    Replies: 4
    Last Post: - 26th August 2007, 05:28
  3. Multiple IF-THEN statements
    By DavidK in forum mel PIC BASIC Pro
    Replies: 11
    Last Post: - 20th June 2007, 18:28
  4. Proton Commands & statements
    By Lotondo in forum mel PIC BASIC Pro
    Replies: 3
    Last Post: - 6th November 2006, 23:37
  5. time for PBP statements
    By fnovau in forum mel PIC BASIC Pro
    Replies: 6
    Last Post: - 25th October 2006, 19:42

Members who have read this thread : 0

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