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XR82C684CJ-F Datasheet, PDF (47/107 Pages) Exar Corporation – CMOS Quad Channel UART(QUART)
XR82C684
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Please note that it is possible to interface the 80X86
Family of microprocessors to an I-Mode QUART,
however, additional components and design complexity
would be required in order to accomplish this 
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C.6.3.1 Z-80 Microprocessor
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Z80 CPU
Figure 21 Pin Out of the Z80 CPU Device
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Figure 22. Schematic of Z-80 CPU Module
Z-80 CPU Interrupt Servicing Capability
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