MB90337PMC datasheet(13/48 Pages) FUJITSU

13 / 48 page

MB90335 Series

DS07-13735-6E

■ MEMORY MAP

Notes :

• When the ROM mirror function register has been set, the mirror image data at higher addresses (“FF8000H

to FFFFFFH” ) of bank FF is visible from the higher addresses (“008000H to 00FFFFH”) of bank 00.

• The ROM mirror function is effective for using the C compiler small model.

• The lower 16-bit addresses of bank FF are equivalent to those of bank 00. Since the ROM area in

bank FF exceeds 48 Kbytes, however, the mirror image of all the data in the ROM area cannot be

reproduced in bank 00.

• When the C compiler small model is used, the data table mirror image can be shown at “008000H to

00FFFFH” by storing the data table at “FF8000H to FFFFFFH”.

Therefore, data tables in the ROM area can be referred without declaring the far addressing with

the pointer.

FFFFFFH

00FFFFH

007FFFH

007900H

007100H

008000H

FF0000H

000100H

0000FBH

000000H

FFFFFFH

00FFFFH

007FFFH

007900H

001100H

008000H

FF0000H

000100H

0000FBH

000000H

FFFFFFH

00FFFFH

007FFFH

007900H

001100H

008000H

FF0000H

000100H

0000FBH

000000H

MB90V330A

MB90F337

MB90337

Single chip mode (with ROM mirror function)

Peripheral area

ROM (FF bank)

ROM area

(image of FF bank)

RAM area

(28 Kbytes)

Peripheral area

ROM (FF bank)

ROM area

(image of FF bank)

RAM area

Kbytes)

Peripheral area

ROM (FF bank)

ROM area

(image of FF bank)

RAM area

Kbytes)

Peripheral area

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