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 Allegro pin Assignment 

Last post Wed, Jun 25 2014 5:59 AM by mcatramb91. 11 replies.
Started by NigelFlet 04 Nov 2008 05:39 AM. Topic has 11 replies and 6296 views
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  • Tue, Nov 4 2008 5:39 AM

    • NigelFlet
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    Allegro pin Assignment Reply
    Hi - Very new pcb editor user here

    Please can you help.

    I am trying to add extra pins to a footprint which currently has 24 pins and want to increase to 26 pins.

    I would like to rename pin numbers on this footprint?

    I believe I use options tab but not sure how to go further?

    Regards,

    Nigel
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    • Post Points: 35
  • Tue, Nov 4 2008 7:54 AM

    • redwire
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    Re: Allegro pin Assignment Reply

     Renaming pin numbers is as simple as editing the number (edit->text) (just make sure the pin number is visible)
    Adding a pin is Layout->Pin and then walk through the options tab.  If it's an electrical connection in the schematic then choose connect. If it's a non-electrical pin then choose mechanical.

    You can also just copy an existing pin and rename its pin number afterwards.  Very flexible. 

     

    • Post Points: 35
  • Tue, Nov 4 2008 8:08 AM

    • NigelFlet
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    Re: Allegro pin Assignment Reply

     Thanks for your response. To be honest I was looking for properties table etc. - over complicating!

     Thanks.

    • Post Points: 5
  • Tue, Mar 3 2009 8:03 AM

    • JacobL
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    Re: Allegro pin Assignment Reply

    Hello!

    The new pin shows up, but its text (pin number) is really big and shows up far away from the symbol. Why I can't just drag it to the right place and right click to select edit -> font I don't know!?!?

    /Jacob

    • Post Points: 20
  • Tue, Mar 3 2009 9:05 AM

    • NigelFlet
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    Re: Allegro pin Assignment Reply
    Hi Jacob.

    Firstly you need to go and setup the Photoplot width for the text sizes in Setup>Design Parameters, Text tab, “Setup Text Sizes”. You will see many different Text BLk which you can edit (so just change on and try different combinations),

     Then return to main screen and change text size as follows:

     Edit>Change   /  In Find Tab select Text  / In options Tab select class= Ref Des and subclass=Silkscreen Top.

    Then just select text Blk required and just click onref des you want to change.

     
    (once happy just right click done).

     Nigel.
    • Post Points: 35
  • Tue, Mar 3 2009 11:56 PM

    • JacobL
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    Re: Allegro pin Assignment Reply

    Hello Nigel and many thanks for your answer! I could never have guessed that was the way to do this.

    Still, I can't figure out how to move the text closer to the pin (pad). Do you know how to do this as well?

    Br, Jacob

    • Post Points: 20
  • Wed, Mar 4 2009 2:14 AM

    • NigelFlet
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    Re: Allegro pin Assignment Reply

     Hi Jacob,

     Trust me i know what its like!!

    just go to your FIND tab to the right. Turn "All Off" then select Text. Now move to main screen and just select Ref Des on screen - now right click and here you will find MOVE or even Rotate.

    note: Make sure Ref Des is turned on. ie goto manu bar and Display/ColorVisibility and under tree view on left goto Components and turn on RefDes - Silkscreen_Top.

     

    There ya go,

    Nigel.

    • Post Points: 20
  • Thu, Mar 5 2009 11:05 PM

    • JacobL
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    Re: Allegro pin Assignment Reply

    Thanks for the help Nigel!

    My design looks much nicer now.

    Good to know for other users is that you have to be in "general edit" mode when performing the above.

    Br, Jacob

    • Post Points: 5
  • Wed, Oct 2 2013 3:25 AM

    Re: Allegro pin Assignment Reply

     hello Nigel. My brain boiling. Four days ago i made footprint of big BGA's with 990 pins. It was hard... Newer i had work so hard.

    But all was ok (i can reduce pin number, move rotate with "Designe parameters") But NOW (I start create new footrint with 229 pins) I CAN NOT call window of designe parameters tool. It happed nothhing while i click on it!

    HELP! or i'll be crazy soon with this program. 

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  • Wed, Oct 2 2013 6:43 AM

    • chads108
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    Re: Allegro pin Assignment Reply

     I don't exactly know what process you are using, but you should be able to create as BGA footprint of any number of pins in less than 2 minutes if you use the footprint wizard.

    • Post Points: 5
  • Wed, Jun 25 2014 5:13 AM

    • Convoluted
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    Re: Allegro pin Assignment Reply

    I've seen the responses regarding changes to the pin numbers, but what happens if I have deleted a pin number?  How do I get it back?

    • Post Points: 20
  • Wed, Jun 25 2014 5:59 AM

    • mcatramb91
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    Re: Allegro pin Assignment Reply

    You can add the pin number back by using Add > Text as follows: (Symbol Editor - .dra)

    1) Add > Text
    2) Under the Options tab change to Class Package Geometry and Subclass to Pin_Number
    3) Select the Pin that requires a pin number assignment
    4) Select location for the Pin number text and enter the pin number

    If you have a lot of pins that need the pin number added back in it may be easier to re-add the pins again.

    If you accidentally deleted the text on Package Geometry / Pin_Number in the layout (.brd) the pin will still remember its pin number.  If you want to get them back graphically just refresh the symbol using Place > Update Symbols..

    Hope this helps,
    Mike Catrambone

    • Post Points: 5
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Started by NigelFlet at 04 Nov 2008 05:39 AM. Topic has 11 replies.