UPD75238GJ NEC [NEC], UPD75238GJ Datasheet - Page 17

• Manufacturer Part Number: UPD75238GJ
• Description: 4 BIT SINGLE-CHIP MICROCOMPUTER
• Manufacturer: NEC [NEC]

1A0H
FC0H
000H
01FH
020H
07FH
0FFH
100H
19FH
1FFH
200H
2FFH
300H
3FFH
F80H
FFFH
Remark — : Don’t care
Data area
Static RAM
(memory bank 0)
Data area
Static RAM
(memory bank 1)
Data area
Static RAM
(memory bank 2)
Data area
Static RAM
(memory bank 3)
Fig. 2-1 Data Memory Organization and Addressing Range of Each Addressing Mode
Memory bank enable flag
Peripheral hardware area
(memory bank 15)
Addressing mode
Not contained
Stack area
General
resister
area
Display data
memory area
MBE
= 0
mem.bit
mem
MBS
MBE
MBS
MBS
MBS
MBS
= 15
= 1
= 0
= 1
= 2
= 3
MBE
@H + mem.bit
= 0
@HL
MBS
MBE
MBS
MBS
MBS
MBS
= 15
= 1
= 0
= 1
= 2
= 3
@DE
@DL
–
Stack
address-
ing
SBS
SBS
SBS
SBS
= 0
= 1
= 2
= 3
–
fmem.bit
PD75238
–
pmem.
@L
–
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