UPD75238GJ 查看數據表（PDF） - NEC => Renesas Technology

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UPD75238GJ

4 BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

µPD75238

Fig. 2-1 Data Memory Organization and Addressing Range of Each Addressing Mode

Addressing mode

000H

01FH

020H

07FH

Memory bank enable flag

General

resister

area

Data area

Static RAM

(memory bank 0)

mem

mem.bit

MBE

=0

MBE

=1

@HL

@H + mem.bit

MBE

=0

MBE

=1

@DE

@DL

Stack

address- fmem.bit

ing

pmem.

@L

–

–

–

–

MBS

MBS

SBS

=0

=0

=0

0FFH

100H

19FH

1A0H

Data area

Static RAM

(memory bank 1)

MBS

MBS

SBS

=1

=1

=1

1FFH

Display data

memory area

200H

Stack area

Data area

Static RAM

(memory bank 2)

MBS

MBS

SBS

=2

=2

=2

2FFH

300H

Data area

Static RAM

(memory bank 3)

MBS

MBS

SBS

=3

=3

=3

3FFH

F80H

Not contained

FC0H

Peripheral hardware area

(memory bank 15)

FFFH

Remark — : Don’t care

MBS

= 15

MBS

= 15

17

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