> Yeah, I put the tqfp in but prior to doing the layout a friend
> soldered a few micros to the adapters.
Doh!
They'll come off easy with a hotplate. Just put the adapter on it
with a bit of solder or solder paste, turn on the hotplate, and wait.
When the solder melts, lift off the chip.
Yeah, I put the tqfp in but prior to doing the layout a friend
soldered a few micros to the adapters. It is probably going to be
easier to unsolder the chips.
On Fri, Mar 6, 2009 at 4:56 PM, DJ Delorie <[1...@delorie.com> wrote:
That's not a standard footprint, so you'll likely
That's not a standard footprint, so you'll likely be creating your
own.
*Maybe* one of the PGA footprints might work, but double check the pin
numbers!
Why do you need these adapters if you're making your own pcb? Just
drop a tqfp44 footprint on your board and be done with it.
___
I got a TQFP44 to, what they call, DIP adapter. The link to these
adapters is below. The website says it's a dip. I'd like to put the
PCB footprint in a layout but I don't know what the footprint of the
adapter is called. Regrettably the technical information on the
adapter leav
Rob Butts wrote:
>I'm trying to create a footprint for a Microchip signal controller.
>I'm having trouble locating the horizontal pins with respect to the
>vertical pins. The datasheet gives dimensions for chip width and
>height, pinwidth and pin pitch. It doesn't give the distanc
DJ Delorie wrote:
> Lacking any evidence to the contrary on the data sheet, I just assume
> the pins (as a group) are centered on each edge.
Me too. They probably have a loose tolerance for that dimension since
it's a function of molding registration -- lead frame vs. body.
John
--
Ecosensory
> It doesn't give the distance from chip edge to were the first pin
> from the edge.
Lacking any evidence to the contrary on the data sheet, I just assume
the pins (as a group) are centered on each edge.
___
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On Fri, Oct 17, 2008 at 04:38:58PM -0400, Rob Butts wrote:
>
>I'm trying to create a footprint for a Microchip signal controller.
>I'm having trouble locating the horizontal pins with respect to the
>vertical pins.
I've attached the script I use to make QFPs using jcl's perl module.
F
I'm trying to create a footprint for a Microchip signal controller.
I'm having trouble locating the horizontal pins with respect to the
vertical pins. The datasheet gives dimensions for chip width and
height, pinwidth and pin pitch. It doesn't give the distance from
chip edge to w
On Sun, Feb 24, 2008 at 4:59 PM, Ian Chapman <[EMAIL PROTECTED]> wrote:
> Hi, I am using the footprint SQFP-50P-2280L1-2280L2-144N.fp for a
> tqfp144. I've checked a printout of the gerber against an actual device
> and it looks okay to me. I just need to check against the rest of the
> guys
Hi, I am using the footprint SQFP-50P-2280L1-2280L2-144N.fp for a
tqfp144. I've checked a printout of the gerber against an actual device
and it looks okay to me. I just need to check against the rest of the
guys for any comments? Regards Ian.
___
>>LQFP128_14
>
> Of course, you'll have to add the thermal pad yourself.
>
If you use the latest release of PCB (with hi-res QFP packages) you can use a
following definition:
define(`PKG_LQFP128_14', `PKG_LQFP_40(`$1',`$2',`$3',`128',`14',`970')');
Adding this line to geda.inc should make the fo
> LQFP128_14
Of course, you'll have to add the thermal pad yourself.
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>I'm looking at the datasheet for a TI video digitizer, the TVP5154,
> and its package (TQFP-128) appears to have 0.4mm pin spacing if I'm
> reading the datasheet right. Has anyone else seen this package? Does
> PCB have a footprint for this? (I don't see one offhand, if it is
> indeed
On Thu, Feb 21, 2008 at 5:54 PM, Dave McGuire <[EMAIL PROTECTED]> wrote:
>
>I'm looking at the datasheet for a TI video digitizer, the TVP5154,
> and its package (TQFP-128) appears to have 0.4mm pin spacing if I'm
> reading the datasheet right. Has anyone else seen this package? Does
> PCB
I'm looking at the datasheet for a TI video digitizer, the TVP5154,
and its package (TQFP-128) appears to have 0.4mm pin spacing if I'm
reading the datasheet right. Has anyone else seen this package? Does
PCB have a footprint for this? (I don't see one offhand, if it is
indeed 0.4mm)
On Sat, 2007-04-14 at 22:42 -0400, John Luciani wrote:
> I have QFP-65P-1780L1-1780L2-80N which is
> 17.8 x 17.8 with a pitch of 0.65 at
>
OK... so I have it already and didn't know it.
Thanks folks!
--
Peter L. Berghold Unix Professional
[EMAIL PROTECTED]
On 4/14/07, Peter L. Berghold <[EMAIL PROTECTED]> wrote:
Hi folks,
Before I make myself crazy and try re-inventing the wheel, are there any
PCB footprints out there for 80 pin TQFP packages?
I have QFP-65P-1780L1-1780L2-80N which is
17.8 x 17.8 with a pitch of 0.65 at
http://www.luciani.org/g
> Before I make myself crazy and try re-inventing the wheel, are there
> any PCB footprints out there for 80 pin TQFP packages?
There's one in ~geda. Watch out for pin pitch - an 80 pin QFP comes
in 0.65mm (14mm) and 0.50mm (12mm) pitch.
___
geda-use
Hi folks,
Before I make myself crazy and try re-inventing the wheel, are there any
PCB footprints out there for 80 pin TQFP packages?
I have a project that I'm looking to design/build that I"m planning to
use a PIC 18F8520 for and looking at the data sheets for it I notice
that's the package it
On 10/15/06, Lares Moreau <[EMAIL PROTECTED]> wrote:
I'm looking into using an ATMega2560 for an upcoming project. Does anyone have
a TQFP-100 footprint available?
-Lares
I have a footprint called SQFP-50P-1680L1-1680L2-100N on my website.
100 pins with a pitch of 0.5mm. Check the dimensions
Lares Moreau wrote:
I'm looking into using an ATMega2560 for an upcoming project. Does anyone have
a TQFP-100 footprint available?
There is a TQFP100_14 in the ~geda library which ships with pcb. There
is a preview at:
http://www.gedasymbols.org/footprints/m4lib/TQFP100_14.fp
note that
I'm looking into using an ATMega2560 for an upcoming project. Does anyone have
a TQFP-100 footprint available?
-Lares
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I am not sure what you mean here Stuart? There is a risk that a user
would pick a symbol with pin numbers that match one physical foot print
but at layout time would select a foot print for a different packaging
of the device.
I sure would like to at least warn a user that "hey that foot print
doe
On Thu, 27 Jul 2006, [EMAIL PROTECTED] wrote:
I have problem with gsch2pcb and
/usr/share/gEDA/sym/micro/ATmega128-3.sym.
I added this one to .sch file run gsch2pcb on it and get this result:
U1: can't find PCB element for footprint TQFP64 (value=unknown)
So device U1 will not be in the layou
> > I have problem with gsch2pcb and
> > /usr/share/gEDA/sym/micro/ATmega128-3.sym.
> > I added this one to .sch file run gsch2pcb on it and get this result:
> >
> > U1: can't find PCB element for footprint TQFP64 (value=unknown)
> > So device U1 will not be in the layout.
> >
> > Other packages
[EMAIL PROTECTED] wrote:
I have problem with gsch2pcb and
/usr/share/gEDA/sym/micro/ATmega128-3.sym.
I added this one to .sch file run gsch2pcb on it and get this result:
U1: can't find PCB element for footprint TQFP64 (value=unknown)
So device U1 will not be in the layout.
Other packages like
I have problem with gsch2pcb and
/usr/share/gEDA/sym/micro/ATmega128-3.sym.
I added this one to .sch file run gsch2pcb on it and get this result:
U1: can't find PCB element for footprint TQFP64 (value=unknown)
So device U1 will not be in the layout.
Other packages like DIP or SO are working but w
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