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Mail Archives: geda-help/2017/08/28/19:55:56

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From: John Doty <jpd AT noqsi DOT com>
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Subject: Re: [geda-help] Symbols for components with extra internally
connected pins in the footprint
Date: Mon, 28 Aug 2017 17:55:35 -0600
References: <CAHsNvaB61cG5aYuoTO1HVeuDfq=hPfuZ667L0fhEPk6g+k1V_Q AT mail DOT gmail DOT com>
To: geda-help AT delorie DOT com
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> On Aug 28, 2017, at 5:01 AM, Graham S (graham DOT seale AT gmail DOT com) [via =
geda-help AT delorie DOT com] <geda-help AT delorie DOT com> wrote:
>=20
> How does one deal with the symbol for a component that has more =
physical pins than symbol pins, because internally some are strapped =
together? I have searched through the Wiki help for some time, looking =
for a clear example, but not yet seen how to do it.

Here=E2=80=99s an example of a symbol for a three terminal MOSFET in an =
18 pin LCC:



The trick is that there are a bunch of pins occupying the same space.

The pins=3D attribute is for Allegro netlisting.
The pins-used=3D attribute is for checking with =
http://www.gedasymbols.org/user/john_doty/tools/gnet-check-pincount.scm =
<http://www.gedasymbols.org/user/john_doty/tools/gnet-check-pincount.scm>.=


John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd AT noqsi DOT com



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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><br class=3D""><div><blockquote type=3D"cite" class=3D""><div =
class=3D"">On Aug 28, 2017, at 5:01 AM, Graham S (<a =
href=3D"mailto:graham DOT seale AT gmail DOT com" =
class=3D"">graham DOT seale AT gmail DOT com</a>) [via <a =
href=3D"mailto:geda-help AT delorie DOT com" =
class=3D"">geda-help AT delorie DOT com</a>] &lt;<a =
href=3D"mailto:geda-help AT delorie DOT com" =
class=3D"">geda-help AT delorie DOT com</a>&gt; wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><span =
style=3D"font-family: Helvetica; font-size: 12px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; =
display: inline !important;" class=3D"">How does one deal with the =
symbol for a component that has more physical pins than symbol pins, =
because internally some are strapped together? I have searched through =
the Wiki help for some time, looking for a clear example, but not yet =
seen how to do it.</span></div></blockquote><br =
class=3D""></div><div>Here=E2=80=99s an example of a symbol for a three =
terminal MOSFET in an 18 pin LCC:</div><div><br =
class=3D""></div><div></div></body></html>=

--Apple-Mail=_EB273E55-1D34-4724-A358-239318146C69
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	filename=NMOS.sym
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v 20130925 2
T 600 500 5 10 0 0 0 0 1
device=NMOS_TRANSISTOR
T 600 500 5 10 0 0 0 0 1
numslots=0
T 600 500 5 10 0 0 0 0 1
description=generic N channel MOS transistor (enhancement type)
L 250 600 500 600 3 0 0 0 -1 -1
L 250 200 500 200 3 0 0 0 -1 -1
L 250 400 350 450 3 0 0 0 -1 -1
L 250 400 350 350 3 0 0 0 -1 -1
P 0 200 200 200 1 0 0
{
T 0 300 5 10 0 1 0 0 1
pinnumber=4
T 0 300 9 10 0 1 0 0 1
pinlabel=G
T 0 300 5 10 0 0 0 0 1
pinseq=4
T 0 300 5 10 0 0 0 0 1
pintype=pas
}
P 500 600 500 800 1 0 1
{
T 300 700 5 10 0 1 0 0 1
pinnumber=15
T 300 700 9 10 0 1 0 0 1
pinlabel=D
T 300 700 5 10 0 0 0 0 1
pinseq=15
T 300 700 5 10 0 0 0 0 1
pintype=pas
}
P 500 200 500 0 1 0 1
{
T 300 0 5 10 0 1 0 0 1
pinnumber=6
T 300 0 9 10 0 1 0 0 1
pinlabel=S
T 300 0 5 10 0 0 0 0 1
pinseq=6
T 300 0 5 10 0 0 0 0 1
pintype=pas
}
T 700 600 8 10 1 1 0 0 1
refdes=Q?
L 250 675 250 525 3 0 0 0 -1 -1
L 250 475 250 325 3 0 0 0 -1 -1
L 250 275 250 125 3 0 0 0 -1 -1
L 200 600 200 200 3 0 0 0 -1 -1
L 250 400 400 400 3 0 0 0 -1 -1
L 400 400 400 200 3 0 0 0 -1 -1
T 200 1600 5 10 0 0 0 0 1
footprint=18LCC
T 200 1400 5 10 0 0 0 0 1
spice-prototype=X? #1 #4 #6 model-name@
T 200 1200 5 10 0 0 0 0 1
model-name=irfru220n
T 200 1000 5 10 0 0 0 0 1
value=IRFE220
P 500 200 500 0 1 0 1
{
T 300 0 5 10 0 1 0 0 1
pinnumber=7
T 300 0 9 10 0 1 0 0 1
pinlabel=S
T 300 0 5 10 0 0 0 0 1
pinseq=7
T 300 0 5 10 0 0 0 0 1
pintype=pas
}
P 500 200 500 0 1 0 1
{
T 300 0 5 10 0 1 0 0 1
pinnumber=8
T 300 0 9 10 0 1 0 0 1
pinlabel=S
T 300 0 5 10 0 0 0 0 1
pinseq=8
T 300 0 5 10 0 0 0 0 1
pintype=pas
}
P 500 200 500 0 1 0 1
{
T 300 0 5 10 0 1 0 0 1
pinnumber=9
T 300 0 9 10 0 1 0 0 1
pinlabel=S
T 300 0 5 10 0 0 0 0 1
pinseq=9
T 300 0 5 10 0 0 0 0 1
pintype=pas
}
P 500 200 500 0 1 0 1
{
T 300 0 5 10 0 1 0 0 1
pinnumber=10
T 300 0 9 10 0 1 0 0 1
pinlabel=S
T 300 0 5 10 0 0 0 0 1
pinseq=10
T 300 0 5 10 0 0 0 0 1
pintype=pas
}
P 500 200 500 0 1 0 1
{
T 300 0 5 10 0 1 0 0 1
pinnumber=11
T 300 0 9 10 0 1 0 0 1
pinlabel=S
T 300 0 5 10 0 0 0 0 1
pinseq=11
T 300 0 5 10 0 0 0 0 1
pintype=pas
}
P 500 200 500 0 1 0 1
{
T 300 0 5 10 0 1 0 0 1
pinnumber=12
T 300 0 9 10 0 1 0 0 1
pinlabel=S
T 300 0 5 10 0 0 0 0 1
pinseq=12
T 300 0 5 10 0 0 0 0 1
pintype=pas
}
P 500 200 500 0 1 0 1
{
T 300 0 5 10 0 1 0 0 1
pinnumber=13
T 300 0 9 10 0 1 0 0 1
pinlabel=S
T 300 0 5 10 0 0 0 0 1
pinseq=13
T 300 0 5 10 0 0 0 0 1
pintype=pas
}
P 500 600 500 800 1 0 1
{
T 300 700 5 10 0 1 0 0 1
pinnumber=16
T 300 700 9 10 0 1 0 0 1
pinlabel=D
T 300 700 5 10 0 0 0 0 1
pinseq=16
T 300 700 5 10 0 0 0 0 1
pintype=pas
}
P 500 600 500 800 1 0 1
{
T 300 700 5 10 0 1 0 0 1
pinnumber=17
T 300 700 9 10 0 1 0 0 1
pinlabel=D
T 300 700 5 10 0 0 0 0 1
pinseq=17
T 300 700 5 10 0 0 0 0 1
pintype=pas
}
P 500 600 500 800 1 0 1
{
T 300 700 5 10 0 1 0 0 1
pinnumber=18
T 300 700 9 10 0 1 0 0 1
pinlabel=D
T 300 700 5 10 0 0 0 0 1
pinseq=18
T 300 700 5 10 0 0 0 0 1
pintype=pas
}
P 500 600 500 800 1 0 1
{
T 300 700 5 10 0 1 0 0 1
pinnumber=1
T 300 700 9 10 0 1 0 0 1
pinlabel=D
T 300 700 5 10 0 0 0 0 1
pinseq=1
T 300 700 5 10 0 0 0 0 1
pintype=pas
}
P 500 600 500 800 1 0 1
{
T 300 700 5 10 0 1 0 0 1
pinnumber=2
T 300 700 9 10 0 1 0 0 1
pinlabel=D
T 300 700 5 10 0 0 0 0 1
pinseq=2
T 300 700 5 10 0 0 0 0 1
pintype=pas
}
P 0 200 200 200 1 0 0
{
T 0 300 5 10 0 1 0 0 1
pinnumber=5
T 0 300 9 10 0 1 0 0 1
pinlabel=G
T 0 300 5 10 0 0 0 0 1
pinseq=5
T 0 300 5 10 0 0 0 0 1
pintype=pas
}
T 200 2000 8 10 0 0 0 0 1
pins=18
T 200 1800 8 10 0 0 0 0 1
pins-used=16

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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><div></div><div><br class=3D""></div><div>The trick is that =
there are a bunch of pins occupying the same space.</div><div><br =
class=3D""></div><div>The pins=3D attribute is for Allegro =
netlisting.</div><div>The pins-used=3D attribute is for checking =
with&nbsp;<a =
href=3D"http://www.gedasymbols.org/user/john_doty/tools/gnet-check-pincoun=
t.scm" =
class=3D"">http://www.gedasymbols.org/user/john_doty/tools/gnet-check-pinc=
ount.scm</a>.</div><br class=3D""><div class=3D"">
<span class=3D"Apple-style-span" style=3D"border-collapse: separate; =
border-spacing: 0px; font-variant-ligatures: normal; =
font-variant-east-asian: normal; font-variant-position: normal; =
line-height: normal;"><span class=3D"Apple-style-span" =
style=3D"border-collapse: separate; border-spacing: 0px 0px; color: =
rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: =
normal; font-variant: normal; font-weight: normal; letter-spacing: =
normal; line-height: normal; text-align: auto; =
-khtml-text-decorations-in-effect: none; text-indent: 0px; =
-apple-text-size-adjust: auto; text-transform: none; orphans: 2; =
white-space: normal; widows: 2; word-spacing: 0px; "><p style=3D"margin: =
0.0px 0.0px 0.0px 0.0px" class=3D""><font face=3D"Helvetica" size=3D"3" =
style=3D"font: 12.0px Helvetica" class=3D"">John Doty<span =
class=3D"Apple-converted-space">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span =
class=3D"Apple-converted-space">&nbsp;</span><span =
class=3D"Apple-converted-tab">&nbsp; &nbsp;<span =
class=3D"Apple-converted-space">&nbsp;</span></span></span>Noqsi =
Aerospace, Ltd.</font></p><p style=3D"margin: 0.0px 0.0px 0.0px 0.0px" =
class=3D""><a href=3D"http://www.noqsi.com/" =
class=3D"">http://www.noqsi.com/</a></p><p style=3D"margin: 0.0px 0.0px =
0.0px 0.0px" class=3D""><font face=3D"Helvetica" size=3D"3" style=3D"font:=
 12.0px Helvetica" class=3D""><a href=3D"mailto:jpd AT noqsi DOT com" =
class=3D"">jpd AT noqsi DOT com</a></font></p><br =
class=3D"Apple-interchange-newline"></span></span>
</div>
<br class=3D""></body></html>=

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