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Date: Thu, 19 Nov 2015 12:55:59 +0100
From: "Stephen R. van den Berg (srb AT cuci DOT nl) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To: "Dave McGuire (mcguire AT neurotica DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Subject: Re: [geda-user] QFN24 footprint?
Message-ID: <20151119115559.GA30048@cuci.nl>
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Dave McGuire (mcguire AT neurotica DOT com) [via geda-user AT delorie DOT com] wrote:
>> I could run it through my generator.
>> But then I'd need additional information about the pad sizes, uncertainty in
>> position, uncertainty in package size, and if it has a thermal pad (including
>> dimensions of such).

>  That would be fantastic, thank you!

>> Do you have a link to the datasheet?


>  https://www.silabs.com/.../TechnicalDocs/EFM32TG110.pdf

The link didn't work, but I found it anyway.
The result would be this:

http://hydra.cuci.nl/~srb/hackvana/QFN24-65.fp

It's based upon minimum PCB features of 0.15mm copper/spacing.
It takes all other specsheet parameters in consideration.
-- 
Stephen.

"Be spontaneous!"