Really simple question for you experts :)


Results 1 to 6 of 6

Threaded View

  1. #1
    Join Date
    May 2008
    Posts
    33

    Default Really simple question for you experts :)

    This is going to seem so simple that most of you will possibly flame me down but...

    I've got an ICD2 programmer and am making a circuit board up with a 16F877A (first time making a board and not programming a chip in a developement board)
    from what I've discovered so far the pins on the ICD2 are
    1 VPP
    2 VDD
    3 GND
    4 PGD
    5 PGC

    Could someone be so kind as to tell me what pins they go to on the pic please, and yes I HAVE looked at the pdf file for the pic but its confusing as most pins have multip in/outs

    The good news is once I've found out i'll never need to ask again

    From what I can see by reading the specs of the chip is
    vdd is pins 11/32
    vpp pin 1 (should I pull this high permanantly as I wont be using the reset function at all?) Also would it be best to connect this to pins 11/32? or would this affect anything?
    PGD is pin 40,
    PGC is pin 39 ( If I wanted to use either of these two pins as inputs or outputs is there any special config bits I need? or would it be best/simpler to just use them for one thing until I know my way round a PIC better?
    Ground would I just connect this to VSS (pins 12/31)

    Whats pin 36 PGM? would using this pin to drive an lcd display (along with the other bits(lines) on PORTB make any difference and would I need to config anything for this pin?
    Sorry for asking what to you must seem a really stupid question(s) but I have looked and I cant find a definitive answer anywhere as most circuits I've seen are usually using a proper programmer you pop the chip into
    Last edited by lew247; - 3rd June 2008 at 13:39.

Similar Threads

  1. Stupid simple question.....
    By chien_fu in forum mel PIC BASIC
    Replies: 18
    Last Post: - 23rd February 2010, 13:21
  2. SIMPLE question
    By ngeronikolos in forum mel PIC BASIC Pro
    Replies: 7
    Last Post: - 5th February 2008, 18:27
  3. really simple, dumb question
    By picster in forum mel PIC BASIC Pro
    Replies: 1
    Last Post: - 3rd March 2007, 22:02
  4. really simple adcin question
    By kitcat in forum mel PIC BASIC Pro
    Replies: 12
    Last Post: - 21st April 2006, 09:06
  5. Simple question, I hope? (Serial control, 16F84A)
    By kevlar129bp in forum mel PIC BASIC Pro
    Replies: 0
    Last Post: - 31st December 2005, 19:47

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