MB89120 データシートの表示（PDF） - Fujitsu

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MB89120

8-bit Proprietary Microcontroller

Fujitsu 

MB89120/120A Series

s CPU CORE

1. Memory Space

The microcontrollers of the MB89120/A series offer 64 Kbytes of memory for storing all of I/O, data, and program

areas. The I/O area is allocated from the lowest address. The data area is allocated immediately above the I/

O area. The data area can be divided into register, stack, and direct areas according to the application. The

program area is allocated from exactly the opposite end of I/O area, that is, near the highest address. The tables

of interrupt reset vectors and vector call instructions are allocated from the highest address with the program

area. The memory space of the MB89120/A series is structured as illustrated below :

Memory Space

MB89121

MB89P131

0000H

007FH

0080H

00BFH

00C0H

0100H

I/O

Not available

RAM

013FH

0140H

Register

Not available

EFFFH

F000H

FFFFH

ROM

0000H

007FH

0080H

MB89123A

MB89P133A

I/O

RAM

0100H

Register

017FH

0180H

Not available

DFFFH

E000H

ROM

FFFFH

MB89125A

0000H

007FH

0080H

I/O

RAM

0100H

Register

017FH

0180H

BFFFH

C000H

Not available

FFFFH

ROM

MB89P135A

0000H

I/O

007FH

0080H

00FFH

0100H

RAM

512 B

01FFH

0200H

Register

027FH

0280H

BFFFH

C000H

Vacancy

ROM

16 KB

FFFFH

MB89PV130A

0000H

I/O

007FH

0080H

00FFH

0100H

RAM

1 KB

Register

01FFH

0200H

047FH

0480H

7FFFH

8000H

Vacancy

External

ROM

32 KB

FFFFH

18

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