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7733 bảng dữ liệu(PDF) 679 Page - Renesas Technology Corp

tên linh kiện 7733
Giải thích chi tiết về linh kiện  16-BIT SINGLE-CHIP MICROCOMPUTER
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nhà sản xuất  RENESAS [Renesas Technology Corp]
Trang chủ  http://www.renesas.com
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CONNECTING EXTERNAL DEVICES
7735 Group User’s Manual
12–3
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/RDE 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/RDE in the memory expansion or microprocessor mode.
12.1 Signals required for accessing external devices



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