If anyone has successfully used a 32 KHz crystal with the LPC2138, please explain how to connect the crystal. I saw an example on the Keil eval board where a resistor was connected in series with the crystal. I don't understand how that circuit operates. Generally, a 10M or other large resistor is connected in parallel with a crystal in order to bias the oscillator buffer (inside the uP) into its linear region. Has Philips released a more complete data sheet or user manual? Thanks for the help, Wayne Radochonski
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LPC2138 RTC Crystal Connections
2005-02-10 by dharmaBum