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Clock signal from Arduino crystal input pins? Answered

I'm interfacing an Arduino to a chip that needs a 1 MHz clock signal. Can I take one of the Arduino's clock input pins an input it into a 74169 (4 bit cascading counter) to generate a 1 MHz signal?  If not how do I create a 1 MHz 50% duty cycle signal?  Thanks in advance.

1 Replies

steveastroukBest Answer (author)2011-02-24

Yes, you can get away with that, there is usually technically a clock in and a clock out pin, across which the crystal is connected. Connect the load to the clock out pin, and keep the traces VERY short, or you will damp out the crystal.


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