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What is the clocking Vpeak-to-peak to be fed into the Xtal1 pin?

April 26, 2017clocking fed Pin

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What is the clocking Vpeak-to-peak to be fed into the Xtal1 pin?

1 Answer

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10 Posted

The clocking voltage can only take a peak-to-peak voltage of 3.3 V as the internal oscillator is built on a 3.3V core. Hence, to use a 5V external oscillator, it needs to be tied to the Xtal1 pin through a 1 kW resistor. 5.