MB90F548GLPMC datasheet(22/70 Pages) CYPRESS

22 / 70 page

Document Number: 002- 07696 Rev. *A

Page 22 of 70

MB90540G/545G Series

7. Memory Map

The memory space of the MB90540G/545G Series is shown below.

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.

MB90V540G/

F546G (S)

FFFFFFH

FEFFFFH

FF0000H

FDFFFFH

FE0000H

FCFFFFH

FD0000H

00FFFFH

004000H

003FFFH

003900H

0020FFH

001FF5H

001FF0H

000100H

0000BFH

000000H

FC0000H

ROM

(FF bank)

ROM

(FE bank)

ROM

(FD bank)

ROM

(FC bank)

External

ROM

(Image of

FF bank)

Peripheral

External

RAM 8 K

External

Peripheral

ROM correction

MB90543G(S)

F543G(S)

FFFFFFH

FEFFFFH

FF0000H

FE0000H

00FFFFH

004000H

003FFFH

003900H

002000H

0018FFH

000100H

0000BFH

000000H

ROM

(FF bank)

ROM

(FE bank)

External

ROM

(Image of

FF bank)

Peripheral

External

RAM 6 K

External

Peripheral

MB90548G(S)

MB90F548GL(S)

MB90F548G (S)

FFFFFFH

FEFFFFH

FF0000H

FE0000H

00FFFFH

004000H

003FFFH

003900H

002000H

0010FFH

000100H

0000BFH

000000H

ROM

(FF bank)

ROM

(FE bank)

External

ROM

(Image of

FF bank)

Peripheral

External

RAM 4 K

External

Peripheral

MB90549G (S) /

F549G (S)

FDFFFFH

FCFFFFH

FD0000H

FC0000H

ROM

(FD bank)

ROM

(FC bank)

FFFFFFH

FEFFFFH

FF0000H

FE0000H

00FFFFH

004000H

003FFFH

003900H

002100H

0018FFH

000100H

0000BFH

000000H

ROM

(FF bank)

ROM

(FE bank)

External

ROM

(Image of

FF bank)

Peripheral

External

RAM 6 K

External

Peripheral

FFFFFFH

FF0000H

00FFFFH

004000H

003FFFH

003900H

002000H

0008FFH

000100H

0000BFH

ROM

(FF bank)

ROM

(Image of

FF bank)

Peripheral

External

RAM 2 K

External

Peripheral

MB90547G (S)

000000H

External

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