Lpc2000

Hi,

some more information: 
1. There might be a chance of taking away 2 pins on one side if they 
are 2 corner pins. 

2. JTAG pins are also used and needed for our final testing before 
we ship the device. There was a comment that RTCK is not needed in a 
JTAG setup, I did confirm that this is also true for our internal 
usage.

3. A redesign that would change the pin sequence is rather 
expensive, hint, we need to sell >> 1 Mio additional devices to 
compensate for that.

4. I enjoy you all sharing my pain :-)

Thanks a lot for all the feedback and I hope this also helps you all 
to understand the restrictions we are facing when using the same 
die, as mentioned in one of the comments, but not being able to use 
all of the pins. 

Robert


--- In lpc2000@yahoogroups.com, "radim100" <radim100@y...> wrote:
> I understand that die layout dictates one pin from each side , but 
> it is really limiting !!! Probably best 4 pin to take out would be 
> GPIO/ANx pin since this way would remain 4 A/D and would not 
effect 
> other nice features . For example to select one of the pin from 
side
> PIN13 thru PIN24 is really "heart breaking" choice. I have dropped 
> PIN18 since there is second I2c on PINS47,48 .
> Would it be such a big deal have taken more pins on other sides 
and 
> rearrange internal die to pins connection ?
> Radim
> 
> 
> --- In lpc2000@yahoogroups.com, daedalworks@c... wrote:
> > The question I have is why the restriction of removing one pin 
> from each side?  That really limits the possibilities...
> > 
> > -------------- Original message -------------- 
> > 
> > Enter your vote today!  A new poll has been created for the 
> > lpc2000 group:
> > 
> > Rules:
> > need to take off one pin from each side of the LQFP48. 
> > JTAG pins, Vdd, Vss and UART0 pins are not an option. Try 
> > to keep as much as possible functionality. Using these 
> > rules please select 4 pins. Data Sheet can be found here: 
> > http://www.standardics.philips.com/products/lpc2000/pdf/lpc
> > 2101_2102_2103.pdf
> > Chapter 5 (Page 4) has the pinout information 
> > 
> >   o Pin1  
> >   o Pin2 
> >   o Pin3 
> >   o Pin18 
> >   o Pin21 
> >   o Pin22 
> >   o Pin23 
> >   o Pin24 
> >   o Pin28 
> >   o Pin29 
> >   o Pin30 
> >   o Pin32 
> >   o Pin33 
> >   o Pin34 
> >   o Pin35 
> >   o Pin36 
> >   o Pin37 
> >   o Pin38 
> >   o Pin39 
> >   o Pin41 
> >   o Pin44 
> >   o Pin45 
> >   o Pin46 
> >   o Pin47 
> >   o Pin48 
> > 
> > 
> > To vote, please visit the following web page:
> > http://groups.yahoo.com/group/lpc2000/surveys?id=12143932 
> > 
> > Note: Please do not reply to this message. Poll votes are 
> > not collected via email. To vote, you must go to the Yahoo! 
Groups 
> > web site listed above.
> > 
> > Thanks!
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > YAHOO! GROUPS LINKS 
> > 
> >  Visit your group "lpc2000" on the web.
> >   
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