MB90540/540G/545/545G Series
■ MEMORY MAP
The memory space of the MB90540/545 Series is shown below.
MB90548G(S)
2
MB90V540
MB90V540G/F546G (S)
MB90543G(S)*
MB90F549
MB90549G (S) /F549G (S)
MB90F548GL(S)
MB90F548G (S)
MB90547G (S)*2
MB90F543/F543G(S)
FFFFFFH
FF0000H
FFFFFFH
FFFFFFH
FFFFFFH
FFFFFFH
ROM
(FF bank)
ROM
(FF bank)
ROM
(FF bank)
ROM
(FF bank)
ROM
(FF bank)
FF0000H
FEFFFFH
FF0000H
FEFFFFH
FF0000H
FEFFFFH
FF0000H
FEFFFFH
ROM
ROM
ROM
ROM
(FE bank)
(FE bank)
(FE bank)
(FE bank)
FE0000H
FDFFFFH
FE0000H
FE0000H
FE0000H
FDFFFFH
ROM
ROM
(FD bank)
(FD bank)
External
FD0000H
FCFFFFH
FD0000H
FCFFFFH
ROM
External
External
ROM
(FC bank)
(FC bank)
FC0000H
00FFFFH
FC0000H
00FFFFH
External
External
00FFFFH
00FFFFH
00FFFFH
ROM
ROM
ROM
ROM
ROM
(Image of
FF bank)
(Image of
FF bank)
(Image of
FF bank)
(Image of
FF bank)
(Image of
FF bank)
004000H
003FFFH
004000H
003FFFH
004000H
003FFFH
004000H
003FFFH
004000H
003FFFH
Peripheral
External
Peripheral
External
Peripheral
External
Peripheral
External
Peripheral
External
003900H
003900H
002000H
003900H
002000H
003900H
003900H
002000H
002100H*1
0020FFH
001FF5H
001FF0H
0018FFH
0018FFH
ROM correction
RAM 8 K
0010FFH
000100H
RAM 6 K
RAM 6 K
0008FFH
RAM 4 K
RAM 2 K
External
000100H
000100H
000100H
000100H
0000BFH
External
External
External
External
0000BFH
000000H
0000BFH
000000H
0000BFH
000000H
0000BFH
000000H
Peripheral
Peripheral
Peripheral
Peripheral
Peripheral
000000H
*1 : 002000H for MB90F549
*2 : Under development
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 address are the same, 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 FF0000H and FF3FFFH is visible only in bank FF.
22
FUJITSU [ FUJITSU ]
