MSM64481-014GS-2K-H 查看數據表（PDF） - Oki Electric Industry

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MSM64481-014GS-2K-H

Built-in 512-Bit EEPROM and LCD Driver 4-Bit Microcontroller

Oki Electric Industry 

¡ Semiconductor

MSM64481

Data Memory (RAM)

The data memory space is assigned to RAM and special function registers (SFRs). Data Memory

is located in a different address space from program memory.

The data length is 4 bits (1nibble), and a bank unit is 256 nibbles. The data memory uses two bank

areas: one for the EEPROM and SFR areas, in Bank 0; the other for RAM, including the stack, in

Bank 7.

The following figure shows the address space of data memory.

7FFh

780h

700h

BANK7

RAM area

Unused area

7FFh

Data/stack

area 128 nibbles

128 nibbles

780h

Inaccessible area

0FFh

07Fh

000h

BANK0

4 bits

EEPROM area

SFR area

07Fh

07Eh

07Dh

07Ch

Stack

pointer

HALT

MIEF

Other

SFR

area

128 nibbles

000h

Data Memory Address Space

7/12

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