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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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7480 Scheda tecnica(PDF) 20 Page - Renesas Technology Corp |
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7480 Scheda tecnica(HTML) 20 Page - Renesas Technology Corp |
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20 / 337 page  7480 Group and 7481 Group User's Manual 1-3 HARDWARE 1.2 Group Expansion The 7480 Group and 7481 Group are included in the 7470 series microcomputers, based on the M37470M2- XXXSP. The 7470 series is classified as follows: 7470 series 7470 Group 7471 Group 7477 Group 7478 Group 7480 Group 7481 Group Figure 1.2.1 shows the ROM/RAM expansion plan for the 7480 Group and 7481 Group. Since these products are different only in the type and size of built-in memory, and the number of ports, the most suitable product for user’s system can be easily selected. The following products are supported in the 7480 Group and 7481 Group in addition to the mask ROM version. (1) One Time PROM Version This is a programmable microcomputer with built-in programmable ROM (PROM) that can be written to only one time. For details, refer to Section 1.20 Built-in PROM Version. (2) Built-in EPROM Version (with Window) This is a programmable microcomputer with a transparent window on top of its package. Built-in EPROM can be written and erased. For details, refer to Section 1.20 Built-in PROM Version. Table 1.2.1 lists the products currently supported in the 7480 Group and 7481 Group. 1.2 Group Expansion |
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