M37480M8-XXXFP 查看數據表（PDF） - Renesas Electronics

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M37480M8-XXXFP

8-BIT SINGLE-CHIP MICROCOMPUTER

Renesas Electronics 

HARDWARE

1.2 Group Expansion

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.

7480 Group and 7481 Group User's Manual

1-3

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