MB90F347CE datasheet(30/85 Pages) FUJITSU

30 / 85 page

MB90340E Series

Note: An image of the data in the FF bank of ROM is visible in the upper part of bank 00, which makes it possible

for the C compiler to use the small memory model. The lower 16 bits of addresses in the FF bank are the

same as the lower 16 bits of addresses in the 00 bank so that tables stored in the ROM can be accessed

without using the far specifier in the pointer declaration.

For example, when the address 00C000H is accessed, the data at FFC000H in ROM is actually accessed.

The ROM area in bank FF exceeds 32 Kbytes, and its entire image cannot be shown in bank 00.

As a result, the image between FF8000H and FFFFFFH is visible in bank 00, while the image between FF0000H

and FF7FFFH is visible only in bank FF.

MB90349E(S)/349CE(S)

MB90342E(S)/342CE(S)

MB90F349E(S)/F349CE(S)

MB90F342E(S)/F342CE(S)

MB90348E(S)/348CE(S)

MB90341E(S)/341CE(S)

MB90347E(S)/347CE(S)

MB90F347E(S)/F347CE(S)

MB90346E(S)/346CE(S)

MB90F346E(S)/F346CE(S)

FFFFFFH

FF0000H

FEFFFFH

FE0000H

FDFFFFH

FD0000H

FCFFFFH

FC0000H

0000EFH

000000H

00FFFFH

007FFFH

007900H

003FFFH

000100H

008000H

FFFFFFH

FF0000H

FEFFFFH

FE0000H

0000EFH

000000H

00FFFFH

007FFFH

007900H

003FFFH

000100H

008000H

FFFFFFH

FF0000H

FEFFFFH

FE0000H

0000EFH

000000H

00FFFFH

007FFFH

007900H

0018FFH

000100H

008000H

FFFFFFH

FF0000H

FEFFFFH

FE0000H

0000EFH

000000H

00FFFFH

007FFFH

007900H

0008FFH

000100H

008000H

ROM (FF bank)

ROM (FE bank)

ROM (FD bank)

ROM (FC bank)

External

access area

ROM (image

of FF bank)

Peripheral

RAM 16 Kbytes

External access area

Peripheral

: Not accessible

External

access area

ROM (image

of FF bank)

Peripheral

RAM 16 Kbytes

External access area

Peripheral

External

access area

ROM (image

of FF bank)

Peripheral

RAM 6 Kbytes

External access area

Peripheral

External

access area

ROM (image

of FF bank)

Peripheral

RAM 2 Kbytes

External access area

Peripheral

ROM (FF bank)

ROM (FE bank)

ROM (FF bank)

ROM (FE bank)

ROM (FF bank)

MB90F347CE 数据表(PDF) 30 Page - fujitsu semiconductor

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MB90F347CE 数据表(PDF) 30 Page - fujitsu semiconductor

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