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From: An Schwob in the USA on 23 Apr 2010 17:45
Hi,
ever heard about a 32-bit microcontroller this tiny? I am familiar
with the Silabs devices that are available in similar packages but
this time it is an ARM Cortex-M0 and it has more I/O and memory than I
thought.
10-bit ADC, 4 timers, UART, SPI, 32K Flash and 8K SRAM, really not bad
for such a grain of silicon.

Check it out.
http://www.mcu-related.com

An Schwob
From: malcolm on 23 Apr 2010 19:32
On Apr 24, 9:45 am, An Schwob in the USA <schwo...(a)aol.com> wrote:
> Hi,
> ever heard about a 32-bit microcontroller this tiny? I am familiar
> with the Silabs devices that are available in similar packages but
> this time it is an ARM Cortex-M0 and it has more I/O and memory than I
> thought.
> 10-bit ADC, 4 timers, UART, SPI, 32K Flash and 8K SRAM, really not bad
> for such a grain of silicon.
>
> Check it out.http://www.mcu-related.com
>
> An Schwob

Yes, it's small, in two dimensions...
However, deployed it will need a minimum layer count,
so that Y axis comes at some cost.
If it bumps the layer count on your board, it's suddenly very
expensive.

Can they fit the die into SO16N, or QSOP16 - and so
offer a single-sided solution ?

-jg
From: linnix on 23 Apr 2010 19:37
On Apr 23, 4:32 pm, malcolm <malcolm...(a)gmail.com> wrote:
> On Apr 24, 9:45 am, An Schwob in the USA <schwo...(a)aol.com> wrote:
>
> > Hi,
> > ever heard about a 32-bit microcontroller this tiny? I am familiar
> > with the Silabs devices that are available in similar packages but
> > this time it is an ARM Cortex-M0 and it has more I/O and memory than I
> > thought.
> > 10-bit ADC, 4 timers, UART, SPI, 32K Flash and 8K SRAM, really not bad
> > for such a grain of silicon.
>
> > Check it out.http://www.mcu-related.com
>
> > An Schwob
>
> Yes, it's small, in two dimensions...
> However, deployed it will need a minimum layer count,

There are only 4 pads in the center. Double layers should work, but
you need plugged via.

> so that Y axis comes at some cost.
> If it bumps the layer count on your board, it's suddenly very
> expensive.
>
> Can they fit the die into SO16N, or QSOP16 - and so
> offer a single-sided solution ?
>
> -jg

From: An Schwob in the USA on 2 May 2010 03:08
---snip----
> > Rick,
>
> > you are absolutely right. You can not use an ultra low cost facility
> > because the device need at the very least a double sided PCB, may be
> > more layers and a more sophisticated machinery than a soldering iron
> > and low cost labor. The lowest cost devices are the LPC1111, selling
> > for 65 cent @ 10k according to the press release.http://www.mcu-related..com/architectures/35-cortex-m3/92-lpc1100
> > Still a bit tough for hand soldering but low cost equipment will do an
> > excellent job with these chips.
>
> > An Schwob
>
> Since when is hand soldering cheaper than pick and place???  Maybe if
> you are building just one, even then I have been asked for CNC
> information since they just don't want to do hand work.  The cost in
> using these parts comes from the small via sizes required... at least
> I am assuming.  Is there a breakout that does not require drills
> smaller than 12 mil?  When I try to get boards made with 10 mil vias
> the board makers have "rounded" that up to 13 citing a +- 3 mil
> tolerance spec.  of course I don't do business with that company
> anymore, but the point is smaller drills cost extra and that is a
> recurring charge.  I can't say anything about the number of layers
> since I haven't tried to route this part yet.  But I'd bet it is hard
> on a two layer board.
>
> It may be that the assembly house charges extra for mounting these
> parts too.  I've seen extra charges for pin pitch below 20 mil (0.5
> mm) on leaded parts.  I'm not sure where they start charging extra for
> fine pitch BGA type parts.
>
> But then if this size part makes a design possible that otherwise
> wouldn't be, it doesn't matter if the unit costs a few cents extra.
>
> Rick

Hi Rick,

that was a misunderstanding. I was talking about low cost equipment
for the LPC1111. Never said or wanted to imply that hand-soldering is
the lowest cost. Just to make sure there is not another
misunderstanding, I totally agree with you!

An Schwob
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