Lpc2000

From: "Alejandro Fabricio Fernandez"
> I am starting with 2138 uC.
> I saw a sch from Jan Szymanski, I have a question for you.
> You put a 560K resistor between the 32.768khz xtal and de uC.
> Do you found that configuration in a Philips AN?

Next time please could post a link to the circuit, to prevent unnecessary
speculations...

If the resistor is electrically between output and crystal, it is used to
limit the drive to the crystal. Expecially the 32 kHz crystals can easily be
overdriven and destroyed. But 560 K looks a bit high - I normally use 220
kOhm.

If is is beteen the input and output of the oscillator amplifier, it is a
biasing resistor - and should normally be between 2.2 and 10M ohm.

Regards,
Arie de Muynck