UPD75518 NEC, UPD75518 Datasheet - Page 21

• Manufacturer Part Number: UPD75518
• Description: 4 BIT SINGLE-CHIP MICROCOMPUTER
• Manufacturer: NEC

XA’
HL’
DE’
BC’
XA’
HL’
DE’
BC’
DE
BC
DE
BC
Fig. 2-4 General Register Configuration (8-Bit Processing)
XA
HL
XA
HL
0AH
0CH
1AH
1CH
0EH
1EH
00H
02H
04H
06H
08H
10H
12H
14H
16H
18H
When RBE·RBS
= 0
When RBE·RBS
= 2
XA’
HL’
DE’
BC’
XA’
HL’
DE’
BC’
XA
HL
DE
BC
XA
HL
DE
BC
0AH
0CH
0EH
1AH
1CH
1EH
00H
02H
04H
06H
08H
10H
12H
14H
16H
18H
When RBE·RBS
= 1
When RBE·RBS
= 3
PD75518(A)
21