Lpc2000

--- In lpc2000@yahoogroups.com, "James Dabbs" <jdabbs@t...> wrote:
> > It capacitively couples at a low level.  It is not a direct
> > connect from the oscillator to the pin on the LPC.
> 
> So, if I need to clock the LPC from an external oscillator, what
should
> I do?  In this case, it's actually an sine waye from a UHSO, but I
was
> planning to square it up for this chip.
I use an 3.3V oscillator IC and use a resistor divider (330 Ohms from
the oscillator to a common point, 75 Ohms from the common point to
ground).  I then run a 100pf cap from that sommon point to the X1
input of the processor. 

Robert