UPD75238GJ NEC [NEC], UPD75238GJ Datasheet - Page 162
UPD75238GJ
Manufacturer Part Number
UPD75238GJ
Description
4 BIT SINGLE-CHIP MICROCOMPUTER
Manufacturer
NEC [NEC]
Datasheet
1.UPD75238GJ.pdf
(190 pages)
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162
8.3 INSTRUCTION CODES OF EACH INSTRUCTION
(1) Explanations of the symbols for the instruction codes
In : Immediate data for n4 or n8
Dn: Immediate data for mem
Bn: Immediate data for bit
Nn: Immediate data for n or IE
Tn: Immediate data for taddr
An: Immediate data for the relative address distance (2 to 16) for the branch destination address minus
Sn: Immediate data for the ones complement of the relative address distance (15 to 1) for the branch
one
destination address
N
R
Q
0
0
0
0
0
0
0
1
1
1
0
0
0
0
1
1
1
1
0
0
0
1
1
2
5
2
N
Q
R
0
0
0
1
1
1
1
0
0
1
0
1
1
0
0
0
0
1
1
0
0
1
1
2
1
1
Q
N
R
1
0
1
0
1
0
1
1
0
0
1
1
0
1
1
0
1
0
1
0
1
0
1
0
0
1
N
addressing
0
0
1
0
1
0
1
0
1
0
reg
0
A
X
H
D
L
E
C
B
@HL
@HL+
@HL–
@DE
@DL
IEBT
IEW
IETPG
IET0
IECSI0
IE0
IE2
IE4
IEKS
IE1
IE
1/2
reg
reg1
@rpa1
@rpa
P
0
0
0
0
1
1
1
1
2
P
0
0
1
1
2
P
0
0
1
1
0
0
1
1
1
P
0
1
0
1
1
P
0
1
0
1
0
1
0
1
0
reg-pair
XA
HL
DE
BC
reg-pair
XA
XA'
HL
HL'
DE
DE'
BC
BC'
rp2
rp'
rp1
rp'1
rp
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