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 Pins numbering (naming)
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coolizard

10 Posts

Posted - 16 Apr 2015 :  13:12:11  Show Profile  Reply with Quote
Hello,

is possible to use matrix pin names like a A1, A2, A3, B1, B2? When you has BGA package it is very confusing use only integer pin names.

THX

coolizard

Edited by - coolizard on 16 Apr 2015 13:12:54

steve

United Kingdom
316 Posts

Posted - 16 Apr 2015 :  14:20:59  Show Profile  Visit steve's Homepage  Reply with Quote
Yes it is, you can call your pin what you wish. There is also a generator of col/row names by position in the editor for dealing with BGA type devices.

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jameshead

United Kingdom
84 Posts

Posted - 16 Apr 2015 :  14:25:39  Show Profile  Visit jameshead's Homepage  Reply with Quote
The footprint and symbol can only use numerical pin names, however you can still assign alphanumeric pin identifiers in the Part Editor.

In the Part you click on the "Pins" tab and in the column "Pin Name" enter the alias you want to use.

This is very useful when you have components that come in both BGA and QFP/QFN flavours and you may want to change between the two diffrent packages in a schematic without having you schematic get distorted.

For example where I have an ATxmega16A4-CU (BGA), ATxmega16A4-MH (QFN) and ATxmega16A4-AU (QFP) I've used this column to name the pins with an alias in the style:

<QFN Pin No>/<BGA Pin No>

example:

ATxmega16A4-CU (BGA)
Footprint Pin = 1
Pin Name = 43/A1

ATxmega16A4-MH (QFN)
Footprint Pin = 43
Pin Name = 43/A1

The Pin Name column is also useful for Diodes, having pin names k or a, Transistors, having pin names b, c, e or FETS having pin names d, s, g since it means you can swap between parts having different styles of packages when the pin numbering on the footprint may be very different without affecting the connections on the schematic.

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coolizard

10 Posts

Posted - 16 Apr 2015 :  15:05:15  Show Profile  Reply with Quote
Thank you, it works :).

coolizard
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