MB90440G(2008) Ver la hoja de datos (PDF) - Fujitsu
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MB90440G Datasheet PDF : 64 Pages
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MB90440G Series
■ MEMORY MAP
MB90V440G
FFFFFFH
FF0000H
FEFFFFH
FE0000H
FDFFFFH
FD0000H
FCFFFFH
FC0000H
ROM (FF bank)
ROM (FE bank)
ROM (FD bank)
ROM (FC bank)
External Access
00FFFFH
004000H
003FFFH
003900H
0038FFH
ROM (Image of
FF bank)
Peripheral
001FF5H
001FF0H
000100H
0000BFH
000000H
ROM correction
RAM 14 K
External Access
Peripheral
MB90F443G/
MB90443G (under development)
FFFFFFH
FF0000H
FEFFFFH
FE0000H
ROM (FF bank)
ROM (FE bank)
External Access
00FFFFH
004000H
003FFFH
003900H
002000H
0018FFH
000100H
0000BFH
000000H
ROM (Image of
FF bank)
Peripheral
External Access
RAM 6 K
External Access
Peripheral
Note : The high-order portion of bank 00 gives the image of the FF bank ROM to make the small model of the C
compiler effective. Since the low-order 16 bits are the same address, the table in ROM can be referenced
without using the far specification in the pointer declaration.
For example, an attempt to access 00C000H accesses the value at FFC000H in ROM.
The ROM area in bank FF exceeds 48 Kbytes, and its entire image cannot be shown in bank 00.
The image between FF4000H and FFFFFFH is visible in bank 00, while the image between FF4000H and
FFFFFFH is visible only in bank FF. Thus, it is recommended that the ROM data table be stored in the area
of FF4000H and FFFFFFH .
18
DS07-13716-3E
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