XR68C681J-F Datasheet, PDF (25/75 Pages) Exar Corporation – CMOS Dual Channel UART(DUART)

XR68C681

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XR68C681



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Figure 6. A Recommended Schematic for the XTAL Oscillator Circuitry
Note:
The user also has an option to drive the oscillator circuit with a TTL input signal, in lieu of using a crystal oscillator. If this approach is
used, the TTL must be driven into the X1/CLK pin, and the X2 pin must be left floating.
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Figure 7. A Recommended Schematic to Drive Multiple DUARTs From the Same Crystal Oscillator
 
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