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How do you array objects in Allegro "Package Symbol" editor ?

Akandriel

I'm a new Cadence Allegro user. I'm making a complex package symbol with over 30,000 shapes. My normal procedure using different CAD tools is to make one pattern then use the "step and repeat" function of the tool to make the array. I provide the quantity of items to array and the step distance. Is there a method in Allegro that allows this type of functionality other than copying the shapes manually?

The end goal is to have a library part with 30,000 shapes and less than 100 "pads" for net connections.

Thanks,

  • Rik Lee
    You can create step and repeat patterns of elements by pasting them in horizontal/vertical (rectangular) patterns spaced from a copy origin 
    In the Options tab, you set the quantity or number of copies to more than one, set the spacing to your requirement and set the order.

    The copy origin can be:

    Symbol
    Body Center
    USer Pick
    Sym Pin #

    If you are copying via and want to retain the net name enable 'Retain net of vias'

  • Akandriel

    Thanks, your suggestion works.

    Do you know if I copy padstacks using this method, can the software renumber the padstacks automatically sequentially ? Currently if I copy an array of padstacks, all the padstacks have the same name (pin 1).

    Thanks, 

  • Rik Lee

    When you are in the add pin command (Layout >Pins menu selection) you have the same options as the copy command with respect to the quantity, spacing and order in the Options tab

    Set the rotation of the pin, the initial pin number, the increment and digitize an XY location. Pins will be added using the quantity, spacing, and order you specified. 

    Changing the Offset X and Offset Y values offsets the text of the pin with respect to the padstack.

     

    A hint on getting help from within Allegro on commands. When you hover the mouse over a menu selection so that it is hilighted select the F1 key. This will bring up help on the command. 

  • Akandriel
    Thanks for the help, everything is working well.
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