MB90822 データシートの表示（PDF） - Fujitsu

部品番号

コンポーネント説明

メーカー

MB90822

16-bit Proprietary Microcontroller

Fujitsu 

MB90820 Series

■ MEMORY MAP

FFFFFFH

Address #1

Address #1 - 1H

ROM area

010000H

00FFFFH

Address #2

Address #2 - 1H

ROM area*

(FF bank image)

: Internal access memory

: Access not allowed

Address #3 + 1H

Address #3

000100H

0000FFH

0000F0H

0000EFH

000000H

RAM

area

Register

Peripheral area

* : In Single chip mode, the mirror function is supported.

Parts no.

MB90822

MB90823

MB90F822A

MB90F823A

MB90V820

Address#1

FF0000H

FE0000H

FF0000H

FE0000H

(FE0000H)

Address#2

008000H

008000H

008000H

008000H

008000H

Address#3

0010FFH

0010FFH

0010FFH

0010FFH

0040FFH

Note: The ROM data of bank FF is reflected to the upper address of bank 00, realizing effective use of the C

compiler small model. The lower 16-bit is assigned to the same address, enabling reference of the table on

the ROM without stating “far”. For example, if an attempt has been made to access 00C000H, the contents

of the ROM at FFC000H are accessed actually. Since the ROM area of the FF bank exceeds 32K bytes, the

whole area cannot be reflected in the image for the 00 bank. The ROM data at FF8000H to FFFFFFH looks,

therefore, as if it were the image for 008000H to 00FFFFH. Thus, it is recommended that the ROM data table

be stored in the area of FF8000H to FFFFFFH.

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