For a hobby project I'm trying to use the LPC2138 LQFP-64 package on a
2-layer board with most of the pins connected. Has anyone ever done a
layout on a 2-layer board in Eagle CAD? I'm wondering what settings
you use to successfully lay it out and get it routed.
Thanks
LPC2138 on 2-layer board with EagleCad?
Started by ●April 18, 2007
Reply by ●April 18, 20072007-04-18
I've done several layouts with LPC parts on 2-layer boards in eagle.
The settings to use depend mostly on the requirements of you board
house. For me the really important settings are 7mil feature size,
and 15mil minimum drill. One thing to beware of is that the LPC
footprints may need to be adjusted to be compatible with the design
rules of some board houses. I've personally found one place where
the 0.5mm pitch of the LPC parts violated the design rules and we had
to go elsewhere.
If your having trouble with eagle I would suggest you work through the
tutorial and then contact the newsgroup. Eagle works great, but is
not intuitive.
If this is for a homemade PCB, good luck to you.
--- In l..., "mattwoolsey" wrote:
>
> For a hobby project I'm trying to use the LPC2138 LQFP-64 package on a
> 2-layer board with most of the pins connected. Has anyone ever done a
> layout on a 2-layer board in Eagle CAD? I'm wondering what settings
> you use to successfully lay it out and get it routed.
>
> Thanks
>
The settings to use depend mostly on the requirements of you board
house. For me the really important settings are 7mil feature size,
and 15mil minimum drill. One thing to beware of is that the LPC
footprints may need to be adjusted to be compatible with the design
rules of some board houses. I've personally found one place where
the 0.5mm pitch of the LPC parts violated the design rules and we had
to go elsewhere.
If your having trouble with eagle I would suggest you work through the
tutorial and then contact the newsgroup. Eagle works great, but is
not intuitive.
If this is for a homemade PCB, good luck to you.
--- In l..., "mattwoolsey" wrote:
>
> For a hobby project I'm trying to use the LPC2138 LQFP-64 package on a
> 2-layer board with most of the pins connected. Has anyone ever done a
> layout on a 2-layer board in Eagle CAD? I'm wondering what settings
> you use to successfully lay it out and get it routed.
>
> Thanks
>
Reply by ●April 18, 20072007-04-18
Did you use ground planes under the chip? I put a ground plane in,
but since I have most of the pins connected, the traces pretty much
wiped out the plane.
-----Original Message-----
From: l... [mailto:l...]On Behalf Of drproton2003
Sent: Wednesday, April 18, 2007 4:15 PM
To: l...
Subject: [lpc2000] Re: LPC2138 on 2-layer board with EagleCad?
I've done several layouts with LPC parts on 2-layer boards in eagle.
The settings to use depend mostly on the requirements of you board
house. For me the really important settings are 7mil feature size,
and 15mil minimum drill. One thing to beware of is that the LPC
footprints may need to be adjusted to be compatible with the design
rules of some board houses. I've personally found one place where
the 0.5mm pitch of the LPC parts violated the design rules and we had
to go elsewhere.
If your having trouble with eagle I would suggest you work through the
tutorial and then contact the newsgroup. Eagle works great, but is
not intuitive.
If this is for a homemade PCB, good luck to you.
--- In lpc2000@yahoogroups .com, "mattwoolsey" wrote:
>
> For a hobby project I'm trying to use the LPC2138 LQFP-64 package on a
> 2-layer board with most of the pins connected. Has anyone ever done a
> layout on a 2-layer board in Eagle CAD? I'm wondering what settings
> you use to successfully lay it out and get it routed.
>
> Thanks
>
but since I have most of the pins connected, the traces pretty much
wiped out the plane.
-----Original Message-----
From: l... [mailto:l...]On Behalf Of drproton2003
Sent: Wednesday, April 18, 2007 4:15 PM
To: l...
Subject: [lpc2000] Re: LPC2138 on 2-layer board with EagleCad?
I've done several layouts with LPC parts on 2-layer boards in eagle.
The settings to use depend mostly on the requirements of you board
house. For me the really important settings are 7mil feature size,
and 15mil minimum drill. One thing to beware of is that the LPC
footprints may need to be adjusted to be compatible with the design
rules of some board houses. I've personally found one place where
the 0.5mm pitch of the LPC parts violated the design rules and we had
to go elsewhere.
If your having trouble with eagle I would suggest you work through the
tutorial and then contact the newsgroup. Eagle works great, but is
not intuitive.
If this is for a homemade PCB, good luck to you.
--- In lpc2000@yahoogroups .com, "mattwoolsey" wrote:
>
> For a hobby project I'm trying to use the LPC2138 LQFP-64 package on a
> 2-layer board with most of the pins connected. Has anyone ever done a
> layout on a 2-layer board in Eagle CAD? I'm wondering what settings
> you use to successfully lay it out and get it routed.
>
> Thanks
>
Reply by ●April 18, 20072007-04-18
My situation was very much the same. I made no special considerations
for extra ground plane under the chip. Most of my designs, all of
which work (from an electrical standpoint at least), have very little
groundplane underneath the LPC.
--- In l..., "Woolsey Matt" wrote:
>
> Did you use ground planes under the chip? I put a ground plane in,
> but since I have most of the pins connected, the traces pretty much
> wiped out the plane.
>
>
>
>
> -----Original Message-----
> From: l... [mailto:l...]On
Behalf Of drproton2003
> Sent: Wednesday, April 18, 2007 4:15 PM
> To: l...
> Subject: [lpc2000] Re: LPC2138 on 2-layer board with EagleCad?
>
> I've done several layouts with LPC parts on 2-layer boards in eagle.
> The settings to use depend mostly on the requirements of you board
> house. For me the really important settings are 7mil feature size,
> and 15mil minimum drill. One thing to beware of is that the LPC
> footprints may need to be adjusted to be compatible with the design
> rules of some board houses. I've personally found one place where
> the 0.5mm pitch of the LPC parts violated the design rules and we had
> to go elsewhere.
>
> If your having trouble with eagle I would suggest you work through the
> tutorial and then contact the newsgroup. Eagle works great, but is
> not intuitive.
>
> If this is for a homemade PCB, good luck to you.
>
> --- In lpc2000@yahoogroups .com,
"mattwoolsey" wrote:
> >
> > For a hobby project I'm trying to use the LPC2138 LQFP-64 package
on a
> > 2-layer board with most of the pins connected. Has anyone ever done a
> > layout on a 2-layer board in Eagle CAD? I'm wondering what settings
> > you use to successfully lay it out and get it routed.
> >
> > Thanks
> >
>
>
>
for extra ground plane under the chip. Most of my designs, all of
which work (from an electrical standpoint at least), have very little
groundplane underneath the LPC.
--- In l..., "Woolsey Matt" wrote:
>
> Did you use ground planes under the chip? I put a ground plane in,
> but since I have most of the pins connected, the traces pretty much
> wiped out the plane.
>
>
>
>
> -----Original Message-----
> From: l... [mailto:l...]On
Behalf Of drproton2003
> Sent: Wednesday, April 18, 2007 4:15 PM
> To: l...
> Subject: [lpc2000] Re: LPC2138 on 2-layer board with EagleCad?
>
> I've done several layouts with LPC parts on 2-layer boards in eagle.
> The settings to use depend mostly on the requirements of you board
> house. For me the really important settings are 7mil feature size,
> and 15mil minimum drill. One thing to beware of is that the LPC
> footprints may need to be adjusted to be compatible with the design
> rules of some board houses. I've personally found one place where
> the 0.5mm pitch of the LPC parts violated the design rules and we had
> to go elsewhere.
>
> If your having trouble with eagle I would suggest you work through the
> tutorial and then contact the newsgroup. Eagle works great, but is
> not intuitive.
>
> If this is for a homemade PCB, good luck to you.
>
> --- In lpc2000@yahoogroups .com,
"mattwoolsey" wrote:
> >
> > For a hobby project I'm trying to use the LPC2138 LQFP-64 package
on a
> > 2-layer board with most of the pins connected. Has anyone ever done a
> > layout on a 2-layer board in Eagle CAD? I'm wondering what settings
> > you use to successfully lay it out and get it routed.
> >
> > Thanks
> >
>
>
>
Reply by ●April 19, 20072007-04-19
----- Original Message -----
From: "mattwoolsey"
To:
Sent: Wednesday, April 18, 2007 11:58 PM
Subject: [lpc2000] LPC2138 on 2-layer board with EagleCad?
> For a hobby project I'm trying to use the LPC2138 LQFP-64 package on a
> 2-layer board with most of the pins connected. Has anyone ever done a
> layout on a 2-layer board in Eagle CAD? I'm wondering what settings
> you use to successfully lay it out and get it routed.
>
You should be able to get it to work on a two-layer board, I didn't have any
problems with an LPC2106 double-sided board I designed when the chip first
came out. You just route it the same as any other board.
Leon
From: "mattwoolsey"
To:
Sent: Wednesday, April 18, 2007 11:58 PM
Subject: [lpc2000] LPC2138 on 2-layer board with EagleCad?
> For a hobby project I'm trying to use the LPC2138 LQFP-64 package on a
> 2-layer board with most of the pins connected. Has anyone ever done a
> layout on a 2-layer board in Eagle CAD? I'm wondering what settings
> you use to successfully lay it out and get it routed.
>
You should be able to get it to work on a two-layer board, I didn't have any
problems with an LPC2106 double-sided board I designed when the chip first
came out. You just route it the same as any other board.
Leon
Reply by ●April 19, 20072007-04-19
mattwoolsey wrote:
>
> For a hobby project I'm trying to use the LPC2138 LQFP-64 package on a
> 2-layer board with most of the pins connected. Has anyone ever done a
> layout on a 2-layer board in Eagle CAD? I'm wondering what settings
> you use to successfully lay it out and get it routed.
>
I have done many LQFP type designs in dual layer using Eagle. Your
consideration is the abilities of the PCB house where you will get the
board made. I use http://www.4pcb.com, Advanced Circuits, I have found
them to be top-quality. They have a $100 special proto service, for
$100 you can get 3 boards made. Silk one side, solder mask two sides,
two layer and all holes plated. Their special usings a 6mil trace -
feature clearance which allows you to easily do a LPC2138 design.
If you are a student, you can get a discount.
I have tried cheaper board services and have not been satisfied with
their quality. Advanced Circuits does a nice job every time that I've
used them, and I have done a lot of prototypes.
TomW
--
Tom Walsh - WN3L - Embedded Systems Consultant
http://openhardware.net http://cyberiansoftware.com http://openzipit.org
"Windows? No thanks, I have work to do..."
----------------
>
> For a hobby project I'm trying to use the LPC2138 LQFP-64 package on a
> 2-layer board with most of the pins connected. Has anyone ever done a
> layout on a 2-layer board in Eagle CAD? I'm wondering what settings
> you use to successfully lay it out and get it routed.
>
I have done many LQFP type designs in dual layer using Eagle. Your
consideration is the abilities of the PCB house where you will get the
board made. I use http://www.4pcb.com, Advanced Circuits, I have found
them to be top-quality. They have a $100 special proto service, for
$100 you can get 3 boards made. Silk one side, solder mask two sides,
two layer and all holes plated. Their special usings a 6mil trace -
feature clearance which allows you to easily do a LPC2138 design.
If you are a student, you can get a discount.
I have tried cheaper board services and have not been satisfied with
their quality. Advanced Circuits does a nice job every time that I've
used them, and I have done a lot of prototypes.
TomW
--
Tom Walsh - WN3L - Embedded Systems Consultant
http://openhardware.net http://cyberiansoftware.com http://openzipit.org
"Windows? No thanks, I have work to do..."
----------------
Reply by ●April 19, 20072007-04-19
I have done many LPC designs also 2368/2378 with Eagle on 2 layers. Do not
forget 100nF capacitors on wupply pins.
You can use also my NXP library which is published on Cadsoft page and included almost every LPC2000 device.
Z lepimi pozdravi / With best regards
Boris Zalokar
How many pieces of test instrument can you buy for EUR99? www.poscope.com
You can use also my NXP library which is published on Cadsoft page and included almost every LPC2000 device.
Z lepimi pozdravi / With best regards
Boris Zalokar
How many pieces of test instrument can you buy for EUR99? www.poscope.com
Reply by ●April 19, 20072007-04-19
I have been using Advanced Circuits as well. This is the fastest chip
I've used in a design so I wanted to make sure there wouldn't be any
problems, especially without a ground plane.
I got my LPC2138 design to route, so I'll put it through their DFM
check to make sure none of the features are too small and get some protos.
Thanks for the help everyone.
MX
-----Original Message-----
From: l... [mailto:l...]On Behalf Of Tom Walsh
Sent: Wednesday, April 18, 2007 10:33 PM
To: l...
Subject: Re: [lpc2000] LPC2138 on 2-layer board with EagleCad?
mattwoolsey wrote:
>
> For a hobby project I'm trying to use the LPC2138 LQFP-64 package on a
> 2-layer board with most of the pins connected. Has anyone ever done a
> layout on a 2-layer board in Eagle CAD? I'm wondering what settings
> you use to successfully lay it out and get it routed.
>
I have done many LQFP type designs in dual layer using Eagle. Your
consideration is the abilities of the PCB house where you will get the
board made. I use http://www.4pcb. com, Advanced Circuits, I have found
them to be top-quality. They have a $100 special proto service, for
$100 you can get 3 boards made. Silk one side, solder mask two sides,
two layer and all holes plated. Their special usings a 6mil trace -
feature clearance which allows you to easily do a LPC2138 design.
If you are a student, you can get a discount.
I have tried cheaper board services and have not been satisfied with
their quality. Advanced Circuits does a nice job every time that I've
used them, and I have done a lot of prototypes.
TomW
--
Tom Walsh - WN3L - Embedded Systems Consultant
http://openhardware .net http://cyberiansoft ware.com http://openzipit. org
"Windows? No thanks, I have work to do..."
----------------
I've used in a design so I wanted to make sure there wouldn't be any
problems, especially without a ground plane.
I got my LPC2138 design to route, so I'll put it through their DFM
check to make sure none of the features are too small and get some protos.
Thanks for the help everyone.
MX
-----Original Message-----
From: l... [mailto:l...]On Behalf Of Tom Walsh
Sent: Wednesday, April 18, 2007 10:33 PM
To: l...
Subject: Re: [lpc2000] LPC2138 on 2-layer board with EagleCad?
mattwoolsey wrote:
>
> For a hobby project I'm trying to use the LPC2138 LQFP-64 package on a
> 2-layer board with most of the pins connected. Has anyone ever done a
> layout on a 2-layer board in Eagle CAD? I'm wondering what settings
> you use to successfully lay it out and get it routed.
>
I have done many LQFP type designs in dual layer using Eagle. Your
consideration is the abilities of the PCB house where you will get the
board made. I use http://www.4pcb. com, Advanced Circuits, I have found
them to be top-quality. They have a $100 special proto service, for
$100 you can get 3 boards made. Silk one side, solder mask two sides,
two layer and all holes plated. Their special usings a 6mil trace -
feature clearance which allows you to easily do a LPC2138 design.
If you are a student, you can get a discount.
I have tried cheaper board services and have not been satisfied with
their quality. Advanced Circuits does a nice job every time that I've
used them, and I have done a lot of prototypes.
TomW
--
Tom Walsh - WN3L - Embedded Systems Consultant
http://openhardware .net http://cyberiansoft ware.com http://openzipit. org
"Windows? No thanks, I have work to do..."
----------------
Reply by ●April 19, 20072007-04-19
Woolsey Matt wrote:
> I have been using Advanced Circuits as well. This is the fastest chip
> I've used in a design so I wanted to make sure there wouldn't be any
> problems, especially without a ground plane.
>
> I got my LPC2138 design to route, so I'll put it through their DFM
> check to make sure none of the features are too small and get some protos.
>
> Thanks for the help everyone.
I also use Advanced Circuits for PCB manufacturing, and recommend
running your design through their www.freedfm.com service.
For the first run of prototypes of a two layer board,
you can also go for the real cheap option of no mask, no silk,
and use Advanced Circuits' BareBones service www.barebonespcb.com
I don't even bother to wire-board prototype circuits anymore,
its faster to draw the schematic, route the PCB, and then
send it off to barebones :)
Dave
> I have been using Advanced Circuits as well. This is the fastest chip
> I've used in a design so I wanted to make sure there wouldn't be any
> problems, especially without a ground plane.
>
> I got my LPC2138 design to route, so I'll put it through their DFM
> check to make sure none of the features are too small and get some protos.
>
> Thanks for the help everyone.
I also use Advanced Circuits for PCB manufacturing, and recommend
running your design through their www.freedfm.com service.
For the first run of prototypes of a two layer board,
you can also go for the real cheap option of no mask, no silk,
and use Advanced Circuits' BareBones service www.barebonespcb.com
I don't even bother to wire-board prototype circuits anymore,
its faster to draw the schematic, route the PCB, and then
send it off to barebones :)
Dave
Reply by ●April 19, 20072007-04-19
Hi Matt,
I have LPC2148 on a double sided board as part of a project, 100mm x 70mm.
Use .25mm trace width with 0.4mm vias (most PCB houses should be able to do
that). I could have gotten it much smaller but I was pushed for time, used
1206 SMD components.
Cheers,
Greg
----- Original Message -----
From: "mattwoolsey"
To:
Sent: Thursday, April 19, 2007 12:58 AM
Subject: [lpc2000] LPC2138 on 2-layer board with EagleCad?
> For a hobby project I'm trying to use the LPC2138 LQFP-64 package on a
> 2-layer board with most of the pins connected. Has anyone ever done a
> layout on a 2-layer board in Eagle CAD? I'm wondering what settings
> you use to successfully lay it out and get it routed.
>
> Thanks
>
> Yahoo! Groups Links
>
I have LPC2148 on a double sided board as part of a project, 100mm x 70mm.
Use .25mm trace width with 0.4mm vias (most PCB houses should be able to do
that). I could have gotten it much smaller but I was pushed for time, used
1206 SMD components.
Cheers,
Greg
----- Original Message -----
From: "mattwoolsey"
To:
Sent: Thursday, April 19, 2007 12:58 AM
Subject: [lpc2000] LPC2138 on 2-layer board with EagleCad?
> For a hobby project I'm trying to use the LPC2138 LQFP-64 package on a
> 2-layer board with most of the pins connected. Has anyone ever done a
> layout on a 2-layer board in Eagle CAD? I'm wondering what settings
> you use to successfully lay it out and get it routed.
>
> Thanks
>
> Yahoo! Groups Links
>
