MB89850R データシートの表示（PDF） - Fujitsu

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MB89850R

8-bit Proprietary Microcontroller

Fujitsu 

MB89850R Series

s CPU CORE

1. Memory Space

The microcontrollers of the MB89850R series offer a memory space of 64 Kbytes for storing all of I/O, data, and

program areas. The I/O area is located at the lowest address. The data area is provided 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 located at exactly the opposite end, that is, near the highest address. Provide the tables of

interrupt reset vectors and vector call instructions toward the highest address within the program area. The

memory space of the MB89860/850 series is structured as illustrated below.

• Memory Space

MB89855R

0000H

0080H

0100H

I/O

RAM

512 B

Register

0200H

0280H

External area

MB89W857/P857

0000H

I/O

0080H

0100H

RAM

1 KB

Register

0200H

0480H

8000H

External area

C000H

FFFFH

ROM*

16 KB

ROM*

32 KB

FFFF H

*: The ROM area is an external area depending on the mode.

16

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