7733 datasheet(327/940 Pages) RENESAS

Il numero della parte	7733

Spiegazioni elettronici	16-BIT SINGLE-CHIP MICROCOMPUTER

PDF	940 Pages

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Produttore elettronici	RENESAS [Renesas Technology Corp]

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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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