UPD75238GJ

Manufacturer Part NumberUPD75238GJ
Description4 BIT SINGLE-CHIP MICROCOMPUTER
ManufacturerNEC [NEC]
UPD75238GJ datasheet
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
Page 151
152
Page 152
153
Page 153
154
Page 154
155
Page 155
156
Page 156
157
Page 157
158
Page 158
159
Page 159
160
Page 160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
Page 159/190

Download datasheet (2Mb)Embed
PrevNext
Mnemonic
Operand
Instruction
Memory
SET1
mem.bit
bit
fmem.bit
manipula-
pmem.@L
tion
@H+mem.bit
CLR1
mem.bit
fmem.bit
pmem.@L
@H+mem.bit
SKT
mem.bit
fmem.bit
pmem.@L
@H+mem.bit
SKF
mem.bit
fmem.bit
pmem.@L
@H+mem.bit
SKTCLR
fmem.bit
pmem.@L
@H+mem.bit
AND1
CY,fmem.bit
CY,pmem.@L
CY,@H+mem.bit
OR1
CY,fmem.bit
CY,pmem.@L
CY,@H+mem.bit
XOR1
CY,fmem.bit
CY,pmem.@L
CY,@H+mem.bit
Branch
BR
addr
$addr 1
!addr
PCDE
PCXA
BCDE
BCXA
BRA
!addr1
BRCB
!caddr
Number
Machine
Operation
of bytes
cycle
2
(mem.bit)
1
2
(fmem.bit)
1
2
2
2
(pmem
+L
.bit(L
))
2
7-2
3-2
1-0
2
(H+mem
.bit)
1
2
3-0
2
(mem.bit)
0
2
(fmem.bit)
0
2
2
2
(pmem
+L
.bit(L
))
2
7-2
3-2
1-0
2
(H+mem
.bit)
0
2
3-0
2 + S
Skip if (mem.bit) = 1
2
2 + S
Skip if (fmem.bit) = 1
2
2 + S
Skip if (pmem
+L
.bit(L
2
7-2
3-2
2 + S
Skip if (H+mem
.bit) = 1
2
3-0
2 + S
Skip if (mem.bit) = 0
2
2
2 + S
Skip if (fmem.bit) = 0
Skip if (pmem
+L
.bit(L
2
2 + S
7-2
3-2
2 + S
Skip if (H+mem
.bit) = 0
2
3-0
2 + S
Skip if (fmem.bit) = 1 and clear
2
2
2 + S
+ L
.
bit(L
Skip if (pmem
)) = 1 and clear
7-2
3-2
1-0
2 + S
Skip if (H+mem
.bit) = 1 and clear
2
3-0
2
CY
CY
(fmem.bit)
2
2
CY
CY
(pmem
+L
2
7-2
3-2
2
CY
CY
(H+mem
.bit)
2
3-0
2
CY
CY
(fmem.bit)
2
2
CY
CY
(pmem
+L
2
7-2
3-2
2
CY
CY
(H+mem
.bit)
2
3-0
CY
CY
(fmem.bit)
2
2
2
CY
CY
(pmem
+L
2
7-2
3-2
2
CY
CY
(H+mem
.bit)
2
3-0
PC
addr1
14-0
(The assembler selects an appropriate
instruction from the BR !addr, BRA
!addr1, BRCB !caddr, and BR $addr1
instructions.)
2
PC
addr1
1
14-0
3
PC
0, PC
!addr
3
14
13-0
2
3
PC
PC
+ DE
14-0
14-8
3
PC
PC
+ XA
2
14-0
14-8
3
PC
BCDE
2
14-0
3
PC
BCXA
2
14-0
PC
!addr1
3
3
14-0
2
PC
PC
+ caddr
2
14-0
14,13,12
PD75238
Address-
Skip
condition
ing area
*3
*4
1
*5
*1
*3
*4
0
*5
*1
*3
(mem.bit) = 1
*4
(fmem.bit) = 1
)) = 1
*5
(pmem.@L) = 1
1-0
*1
(@H+mem.bit) = 1
*3
(mem.bit) = 0
*4
(fmem.bit) = 0
)) = 0
*5
(pmem.@L) = 0
1-0
*1
(@H+mem.bit) = 0
*4
(fmem.bit) = 1
*5
(pmem.@L) = 1
*1
(@H+mem.bit) = 1
*4
.bit(L
))
*5
1-0
*1
*4
.bit(L
))
*5
1-0
*1
*4
.bit(L
))
*5
1-0
*1
*11
*7
*6
*11
*8
11-0
159