MB90570A Просмотр технического описания (PDF) - Fujitsu

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Компоненты Описание

производитель

MB90570A

16-bit Proprietary Microcontroller

Fujitsu 

MB90570A/570C Series

■ MEMORY MAP

Single chip mode

A mirror function is

supported.

FFFFFFH

ROM area

Address #1

FC0000H

010000H

ROM area

(image of

Address #2 bank FF)

004000H

Address #3

000100H

0000C0H

000000H

RAM Register

Peripheral

Internal ROM

external bus mode

A mirror function

is supported.

ROM area

ROM area

(image of

bank FF)

RAM Register

Peripheral

External ROM

external bus mode

RAM Register

Peripheral

Part number

MB90573

MB90574C

MB90F574A

Address #1*

FE0000H

FC0000H

FC0000H

Address #2 *

004000H

004000H

004000H

Address #3 *

001800H

002900H

002900H

: Internal access memory

: External access memory

: Inhibited area

*: Addresses #1, #2 and #3 are unique to the product type.

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

compiler small model. The lower 16-bit of bank FF and the lower 16-bit of bank 00 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 48 kbytes, the whole area cannot be reflected

in the image for the 00 bank. The ROM data at FF4000H to FFFFFFH looks, therefore, as if it were the image

for 00400H to 00FFFFH. Thus, it is recommended that the ROM data table be stored in the area of FF4000H

to FFFFFFH.

20

DS07-13701-9E

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