XR88C681CP Datasheet, PDF (38/99 Pages) Exar Corporation – CMOS DUAL CHANNEL UART (DUART)

XR88C681
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Figure 14. Glue Logic Circuitry Required to Interface the MC68HC11• C to the XR88C681 DUART
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Section C.6.2.1
C.6.2 Z-Mode Interrupt Servicing
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