Lpc2000

Yep, all those things we've done. Top of the board is 100% components
and 99% signals and the bottom is 1% signal and 99% ground plane. Top
of the board that is not used by traces is also a ground plane. Took a
while to lay it out, but it's better then going multilayer. I also
added CTS resistor arrays right next to the processor. They are great
since they have 8 single resistors on 0.5mm centers. My capacitors on
the other hand are at the connector locations which is about 3 inches
away (100pF).

I was just wondering if anyone of the LPC processors has EMI
experience? We recently went throught this with the PXAG49 processors
from Philips and found that the control lines are very noisy at 29.4xxMHz.

regards,
Charles


--- In lpc2000@yahoogroups.com, Robert Wood <robert.wood@a...> wrote:
> Sorry if someone's already mentioned it, but big, dobbering ground
planes are 
> the single most effective way I've found over the years for helping
with 
> this.  
> 
> There was one board that we struggled with for ages. I kept telling
my boss we 
> needed to go multi-layer. After wasting weeks of time and loads of
money he 
> finally agreed to trying a multi-layer board. Guess what? It passed no 
> problem after that.