DS12885N データシートの表示（PDF） - Dallas Semiconductor -> Maxim Integrated

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DS12885N

Real-Time Clock

Dallas Semiconductor -> Maxim Integrated 

DS12885/DS12885Q/DS12885T

CLOCK ACCURACY

The accuracy of the clock is dependent upon the accuracy of the crystal and the accuracy of the match

between the capacitive load of the oscillator circuit and the capacitive load for which the crystal was

trimmed. Additional error is added by crystal freque ncy drift caused by temperature shifts. External

circuit noise coupled into the oscillator circuit can result in the clock running fast. Refer to Application

Note 58 “Crystal Considerations with Dallas Real-Time Clocks” for detailed information.

RECOMMENDED LAYOUT FOR CRYSTAL

4 of 4

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