I just got my free sample of the LPC1102 from NXP and it is tiny. I appreciate
previous comments about not sneezing.
I can't see how a hobbyist would be able to use the chip as is. Pity as I
have an application for which it would be ideal. I presume the 16 dots which are
the connectors are blobs of solder and these melt onto pads when a PCB with an
LPC1102 is heated in an oven. It would be very tricky to align correctly.
What I need is one of these chips mounted on a 16-pin DIP carrier. Does anyone
know if a breakout board is available for LPC1102?
-Scott
Anyone using LPC1102?
Started by ●May 2, 2011
Reply by ●May 2, 20112011-05-02
On 02/05/2011 20:59, Scott wrote:
> I just got my free sample of the LPC1102 from NXP and it is tiny. I appreciate previous comments about not sneezing.
>
> I can't see how a hobbyist would be able to use the chip as is. Pity as I have an application for which it would be ideal. I presume the 16 dots which are the connectors are blobs of solder and these melt onto pads when a PCB with an LPC1102 is heated in an oven. It would be very tricky to align correctly.
>
> What I need is one of these chips mounted on a 16-pin DIP carrier. Does anyone know if a breakout board is available for LPC1102?
I started designing one some time ago. It's 14 pins and will need a
four-layer board. I need to find a company that do vias in pad.
Leon
--
Leon Heller
G1HSM
> I just got my free sample of the LPC1102 from NXP and it is tiny. I appreciate previous comments about not sneezing.
>
> I can't see how a hobbyist would be able to use the chip as is. Pity as I have an application for which it would be ideal. I presume the 16 dots which are the connectors are blobs of solder and these melt onto pads when a PCB with an LPC1102 is heated in an oven. It would be very tricky to align correctly.
>
> What I need is one of these chips mounted on a 16-pin DIP carrier. Does anyone know if a breakout board is available for LPC1102?
I started designing one some time ago. It's 14 pins and will need a
four-layer board. I need to find a company that do vias in pad.
Leon
--
Leon Heller
G1HSM
Reply by ●May 2, 20112011-05-02
--- In l..., Leon Heller wrote:
> > I just got my free sample of the LPC1102 from NXP and it is tiny. I appreciate previous comments about not sneezing.
> >
> > I can't see how a hobbyist would be able to use the chip as is. Pity as I have an application for which it would be ideal. I presume the 16 dots which are the connectors are blobs of solder and these melt onto pads when a PCB with an LPC1102 is heated in an oven. It would be very tricky to align correctly.
> >
> > What I need is one of these chips mounted on a 16-pin DIP carrier. Does anyone know if a breakout board is available for LPC1102?
> I started designing one some time ago. It's 14 pins and will need a
> four-layer board. I need to find a company that do vias in pad.
>
The two pins not extended I assume would be XTAL-in and Reset (and there would be a reset button on the board). I can see why via in pad is required but why four-layer?
Scott
(ZL1CST)
> > I just got my free sample of the LPC1102 from NXP and it is tiny. I appreciate previous comments about not sneezing.
> >
> > I can't see how a hobbyist would be able to use the chip as is. Pity as I have an application for which it would be ideal. I presume the 16 dots which are the connectors are blobs of solder and these melt onto pads when a PCB with an LPC1102 is heated in an oven. It would be very tricky to align correctly.
> >
> > What I need is one of these chips mounted on a 16-pin DIP carrier. Does anyone know if a breakout board is available for LPC1102?
> I started designing one some time ago. It's 14 pins and will need a
> four-layer board. I need to find a company that do vias in pad.
>
The two pins not extended I assume would be XTAL-in and Reset (and there would be a reset button on the board). I can see why via in pad is required but why four-layer?
Scott
(ZL1CST)
Reply by ●May 3, 20112011-05-03
Il 02/05/2011 22.50, Leon Heller ha scritto:
>
>
> On 02/05/2011 20:59, Scott wrote:
> > I just got my free sample of the LPC1102 from NXP and it is tiny. I
> appreciate previous comments about not sneezing.
> >
> > I can't see how a hobbyist would be able to use the chip as is. Pity
> as I have an application for which it would be ideal. I presume the 16
> dots which are the connectors are blobs of solder and these melt onto
> pads when a PCB with an LPC1102 is heated in an oven. It would be very
> tricky to align correctly.
> >
> > What I need is one of these chips mounted on a 16-pin DIP carrier.
> Does anyone know if a breakout board is available for LPC1102?
>
> I started designing one some time ago. It's 14 pins and will need a
> four-layer board. I need to find a company that do vias in pad.
>
It is quite common to use BGA packages and then have vias in pad; every
pcb maker doing 4 or more pcb layers have this ability.
Do you need a PCB company or a prototyping company?
> Leon
> --
> Leon Heller
> G1HSM
>
>
> On 02/05/2011 20:59, Scott wrote:
> > I just got my free sample of the LPC1102 from NXP and it is tiny. I
> appreciate previous comments about not sneezing.
> >
> > I can't see how a hobbyist would be able to use the chip as is. Pity
> as I have an application for which it would be ideal. I presume the 16
> dots which are the connectors are blobs of solder and these melt onto
> pads when a PCB with an LPC1102 is heated in an oven. It would be very
> tricky to align correctly.
> >
> > What I need is one of these chips mounted on a 16-pin DIP carrier.
> Does anyone know if a breakout board is available for LPC1102?
>
> I started designing one some time ago. It's 14 pins and will need a
> four-layer board. I need to find a company that do vias in pad.
>
It is quite common to use BGA packages and then have vias in pad; every
pcb maker doing 4 or more pcb layers have this ability.
Do you need a PCB company or a prototyping company?
> Leon
> --
> Leon Heller
> G1HSM
Reply by ●May 3, 20112011-05-03
On 03/05/2011 03:12, Scott wrote:
> --- In l..., Leon Heller wrote:
>>> I just got my free sample of the LPC1102 from NXP and it is tiny. I appreciate previous comments about not sneezing.
>>>
>>> I can't see how a hobbyist would be able to use the chip as is. Pity as I have an application for which it would be ideal. I presume the 16 dots which are the connectors are blobs of solder and these melt onto pads when a PCB with an LPC1102 is heated in an oven. It would be very tricky to align correctly.
>>>
>>> What I need is one of these chips mounted on a 16-pin DIP carrier. Does anyone know if a breakout board is available for LPC1102?
>> I started designing one some time ago. It's 14 pins and will need a
>> four-layer board. I need to find a company that do vias in pad.
>> The two pins not extended I assume would be XTAL-in and Reset (and there would be a reset button on the board). I can see why via in pad is required but why four-layer?
Reset is brought out to to a pin. The two Vdd and Vss pads use one pin
each, and each pair is decoupled. I didn't see any point in the XTAL-IN
for the sort of applications this will be used for.
No one does via-in-pad with double-sided boards, AFAIK. The vias will
probably need to be filled, but I might get away with laser-drilled
micro-vias and no filling. I need to talk to some PCB manufacturers and
my assembly company.
Leon
--
Leon Heller
G1HSM
> --- In l..., Leon Heller wrote:
>>> I just got my free sample of the LPC1102 from NXP and it is tiny. I appreciate previous comments about not sneezing.
>>>
>>> I can't see how a hobbyist would be able to use the chip as is. Pity as I have an application for which it would be ideal. I presume the 16 dots which are the connectors are blobs of solder and these melt onto pads when a PCB with an LPC1102 is heated in an oven. It would be very tricky to align correctly.
>>>
>>> What I need is one of these chips mounted on a 16-pin DIP carrier. Does anyone know if a breakout board is available for LPC1102?
>> I started designing one some time ago. It's 14 pins and will need a
>> four-layer board. I need to find a company that do vias in pad.
>> The two pins not extended I assume would be XTAL-in and Reset (and there would be a reset button on the board). I can see why via in pad is required but why four-layer?
Reset is brought out to to a pin. The two Vdd and Vss pads use one pin
each, and each pair is decoupled. I didn't see any point in the XTAL-IN
for the sort of applications this will be used for.
No one does via-in-pad with double-sided boards, AFAIK. The vias will
probably need to be filled, but I might get away with laser-drilled
micro-vias and no filling. I need to talk to some PCB manufacturers and
my assembly company.
Leon
--
Leon Heller
G1HSM
Reply by ●May 3, 20112011-05-03
On 03/05/2011 06:35, M. Manca wrote:
> Il 02/05/2011 22.50, Leon Heller ha scritto:
> It is quite common to use BGA packages and then have vias in pad; every
> pcb maker doing 4 or more pcb layers have this ability.
> Do you need a PCB company or a prototyping company?
I'll be looking for one here in the UK, initially, to make things
easier. My usual suppliers can't do vias in pad.
Leon
--
Leon Heller
G1HSM
> Il 02/05/2011 22.50, Leon Heller ha scritto:
> It is quite common to use BGA packages and then have vias in pad; every
> pcb maker doing 4 or more pcb layers have this ability.
> Do you need a PCB company or a prototyping company?
I'll be looking for one here in the UK, initially, to make things
easier. My usual suppliers can't do vias in pad.
Leon
--
Leon Heller
G1HSM
Reply by ●May 3, 20112011-05-03
Il 03/05/2011 10.18, Leon Heller ha scritto:
>
>
> On 03/05/2011 06:35, M. Manca wrote:
> >
> >
> > Il 02/05/2011 22.50, Leon Heller ha scritto:
>
> > It is quite common to use BGA packages and then have vias in pad; every
> > pcb maker doing 4 or more pcb layers have this ability.
> > Do you need a PCB company or a prototyping company?
>
> I'll be looking for one here in the UK, initially, to make things
> easier. My usual suppliers can't do vias in pad.
>
I am very surprised of this, my suppliers here in Italy do vias in pad
and also buried vias (I don't like them so much but some time they are
essential). I have also a 2 layer only supplier that doesn't vias in pad
but it is a supplier for low expensive and low technology pcb.
> Leon
> --
> Leon Heller
> G1HSM
>
>
> On 03/05/2011 06:35, M. Manca wrote:
> >
> >
> > Il 02/05/2011 22.50, Leon Heller ha scritto:
>
> > It is quite common to use BGA packages and then have vias in pad; every
> > pcb maker doing 4 or more pcb layers have this ability.
> > Do you need a PCB company or a prototyping company?
>
> I'll be looking for one here in the UK, initially, to make things
> easier. My usual suppliers can't do vias in pad.
>
I am very surprised of this, my suppliers here in Italy do vias in pad
and also buried vias (I don't like them so much but some time they are
essential). I have also a 2 layer only supplier that doesn't vias in pad
but it is a supplier for low expensive and low technology pcb.
> Leon
> --
> Leon Heller
> G1HSM
Reply by ●May 3, 20112011-05-03
-----Original Message-----
From: l... [mailto:l...]On Behalf
Of Leon Heller
Sent: Tuesday, May 03, 2011 2:14 AM
To: l...
Subject: Re: [lpc2000] Re: Anyone using LPC1102?
On 03/05/2011 03:12, Scott wrote:
> --- In l..., Leon Heller wrote:
> Reset is brought out to to a pin. The two Vdd and Vss pads use one pin
> each, and each pair is decoupled. I didn't see any point in the XTAL-IN
> for the sort of applications this will be used for.
> No one does via-in-pad with double-sided boards, AFAIK. The vias will
> probably need to be filled, but I might get away with laser-drilled
> micro-vias and no filling. I need to talk to some PCB manufacturers and
> my assembly company.
> Leon
> --
> Leon Heller
> G1HSM
Hi Leon,
Try using the smallest hole you can like 0.2mm (0.008"). Then on the
bottom of the board, cover the via with soldermask, without a hole in
the aperature. Decent CAD software should allow you to build a padstack
to handle this. If the solder doesn't plug the hole, then the soldermask
usually does. I've also made sure they will plug by putting kapton tape
on the bottom of the board, which would also work instead of soldermask.
If you are really worried, you could also put kapton tape on the bottom,
and then manually fill the via with solder prior to assembly.
I haven't tried any of this with BGAs, but I've had good sucess using
this method for large area heatsinking pads.
Mike
From: l... [mailto:l...]On Behalf
Of Leon Heller
Sent: Tuesday, May 03, 2011 2:14 AM
To: l...
Subject: Re: [lpc2000] Re: Anyone using LPC1102?
On 03/05/2011 03:12, Scott wrote:
> --- In l..., Leon Heller wrote:
> Reset is brought out to to a pin. The two Vdd and Vss pads use one pin
> each, and each pair is decoupled. I didn't see any point in the XTAL-IN
> for the sort of applications this will be used for.
> No one does via-in-pad with double-sided boards, AFAIK. The vias will
> probably need to be filled, but I might get away with laser-drilled
> micro-vias and no filling. I need to talk to some PCB manufacturers and
> my assembly company.
> Leon
> --
> Leon Heller
> G1HSM
Hi Leon,
Try using the smallest hole you can like 0.2mm (0.008"). Then on the
bottom of the board, cover the via with soldermask, without a hole in
the aperature. Decent CAD software should allow you to build a padstack
to handle this. If the solder doesn't plug the hole, then the soldermask
usually does. I've also made sure they will plug by putting kapton tape
on the bottom of the board, which would also work instead of soldermask.
If you are really worried, you could also put kapton tape on the bottom,
and then manually fill the via with solder prior to assembly.
I haven't tried any of this with BGAs, but I've had good sucess using
this method for large area heatsinking pads.
Mike
Reply by ●May 3, 20112011-05-03
-----Original Message-----
From: l... [mailto:l...]On Behalf
Of Michael Anton
Sent: Tuesday, May 03, 2011 10:41 AM
To: l...
Subject: RE: [lpc2000] Re: Anyone using LPC1102?
-----Original Message-----
From: l... [mailto:l...]On Behalf
Of Leon Heller
Sent: Tuesday, May 03, 2011 2:14 AM
To: l...
Subject: Re: [lpc2000] Re: Anyone using LPC1102?
On 03/05/2011 03:12, Scott wrote:
> --- In l..., Leon Heller wrote:
> Reset is brought out to to a pin. The two Vdd and Vss pads use one pin
> each, and each pair is decoupled. I didn't see any point in the XTAL-IN
> for the sort of applications this will be used for.
> No one does via-in-pad with double-sided boards, AFAIK. The vias will
> probably need to be filled, but I might get away with laser-drilled
> micro-vias and no filling. I need to talk to some PCB manufacturers and
> my assembly company.
> Leon
> --
> Leon Heller
> G1HSM
Hi Leon,
On another note, I don't know why you would have difficulty getting vias
in pads for double sided boards. I've never had this difficulty, and I
can't imagine why this is really any different than having a hole in a
pad, at least from a FAB house perspective. If all else fails, create
a custom padstack for the pads that need to have vias in them, and then it
is just a pad with a hole in it.
Mike
From: l... [mailto:l...]On Behalf
Of Michael Anton
Sent: Tuesday, May 03, 2011 10:41 AM
To: l...
Subject: RE: [lpc2000] Re: Anyone using LPC1102?
-----Original Message-----
From: l... [mailto:l...]On Behalf
Of Leon Heller
Sent: Tuesday, May 03, 2011 2:14 AM
To: l...
Subject: Re: [lpc2000] Re: Anyone using LPC1102?
On 03/05/2011 03:12, Scott wrote:
> --- In l..., Leon Heller wrote:
> Reset is brought out to to a pin. The two Vdd and Vss pads use one pin
> each, and each pair is decoupled. I didn't see any point in the XTAL-IN
> for the sort of applications this will be used for.
> No one does via-in-pad with double-sided boards, AFAIK. The vias will
> probably need to be filled, but I might get away with laser-drilled
> micro-vias and no filling. I need to talk to some PCB manufacturers and
> my assembly company.
> Leon
> --
> Leon Heller
> G1HSM
Hi Leon,
On another note, I don't know why you would have difficulty getting vias
in pads for double sided boards. I've never had this difficulty, and I
can't imagine why this is really any different than having a hole in a
pad, at least from a FAB house perspective. If all else fails, create
a custom padstack for the pads that need to have vias in them, and then it
is just a pad with a hole in it.
Mike
Reply by ●August 19, 20112011-08-19
For purpose of debugging and bringup, suggest www.Zebax.com Samtec Tyco
breakout adaptors along with HDMI type A, C and D breakout adapters. an
excellent products.
From: Scott
To: l...
Sent: Monday, May 2, 2011 12:59 PM
Subject: [lpc2000] Anyone using LPC1102?
I just got my free sample of the LPC1102 from NXP and it is tiny. I appreciate previous comments about not sneezing.
I can't see how a hobbyist would be able to use the chip as is. Pity as I have an application for which it would be ideal. I presume the 16 dots which are the connectors are blobs of solder and these melt onto pads when a PCB with an LPC1102 is heated in an oven. It would be very tricky to align correctly.
What I need is one of these chips mounted on a 16-pin DIP carrier. Does anyone know if a breakout board is available for LPC1102?
-Scott
From: Scott
To: l...
Sent: Monday, May 2, 2011 12:59 PM
Subject: [lpc2000] Anyone using LPC1102?
I just got my free sample of the LPC1102 from NXP and it is tiny. I appreciate previous comments about not sneezing.
I can't see how a hobbyist would be able to use the chip as is. Pity as I have an application for which it would be ideal. I presume the 16 dots which are the connectors are blobs of solder and these melt onto pads when a PCB with an LPC1102 is heated in an oven. It would be very tricky to align correctly.
What I need is one of these chips mounted on a 16-pin DIP carrier. Does anyone know if a breakout board is available for LPC1102?
-Scott
