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7733 Datasheet(PDF) 327 Page - Renesas Technology Corp |
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7733 Datasheet(HTML) 327 Page - Renesas Technology Corp |
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327 / 940 page  CONNECTING EXTERNAL DEVICES 7733 Group User’s Manual 12–2 12.1 Signals required for accessing external devices Functions and operations of signals required for accessing external devices are described below. When connecting external devices which require a long access time, refer to sections “12.2 Software wait,” “12.3 Ready function,” and “12.4 Hold function,” also. When connecting external devices, make sure that the microcomputer operates in the memory expansion or microprocessor mode. (Refer to section “2.5 Processor modes.”) When the microcomputer operates in __ these modes, ports P0 to P4 and pin E function as I/O pins of signals required for accessing external devices. Figure 12.1.1 shows the pin configuration in the memory expansion or microprocessor mode. Table 12.1.1 __ lists the functions of ports P0 to P4 and pin E in the memory expansion or microprocessor mode. 12.1 Signals required for accessing external devices |
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