MB90F334APMC datasheet(20/72 Pages) FUJITSU

20 / 72 page

MB90330A Series

DS07-13734-7E

Memory map of MB90330A series (3/3)

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.

• MB90F335A has the larger size of RAM area than MB90V330A, so that the emulation memory area needs

to be set in the tools for a larger size of emulation area than 007100H.

For details of setting, please refer to “Notes on Debug Environment Setting for MB90330A Series” by

clicking "Application note" at the following URL.

http://edevice.fujitsu.com/micom/en-support/

• 3 cycles are required to access to the emulation memory area (007100H to 0078FFH), which is 1 cycle

more than to the mounted RAM area.

FFFFFFH

007FFFH

000000H

0000FBH

000100H

007100H

007900H

008000H

MB90V330A

FFFFFFH

007FFFH

000000H

0000FBH

000100H

006100H

007900H

008000H

MB90F334A

FFFFFFH

007FFFH

000000H

0000FBH

000100H

004100H

007900H

008000H

MB90333A

Peripheral area

RAM area

(28 Kbytes)

RAM area

(24 Kbytes)

RAM area

(16 Kbytes)

External area

FFFFFFH

007FFFH

000000H

0000FBH

000100H

007900H

008000H

MB90F335A

Peripheral area

RAM area

(30 Kbytes)

External area

External ROM external bus mode

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