MB89160/160A Series
■ CPU CORE
1. Memory Space
The microcontrollers of the MB89160 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 MB89160 series is structured as illustrated below.
Memory Space
MB89165/A
MB89PV160
I/O
MB89161/A
I/O
MB89163/A
I/O
MB89P165
0000H
0080H
0000H
0080H
0000H
0080H
0000H
0080H
I/O
Not available
00C0H
RAM
256 B
RAM
512 B
RAM
256 B
RAM
128 B
0100H
0100H
0140H
0100H
0180H
0100H
Register
Register
Register
Register
0200H
0280H
0200H
0280H
Not available
Not available
Not available
Not available
8000H
C000H
E000H
FFFFH
External ROM
32 KB
ROM
16 KB
F000H
FFFFH
ROM
8 KB
ROM
4 KB
FFFFH
FFFFH
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