Nuvoton NuMicro MS51PC0AE - Instruction Set

MS51
Nov. 28, 2019 Page 486 of 491 Rev 1.00
MS51 32K SERIES TECHNICAL REFERENCE MANUAL
11.2 Instruction Set
Instruction
OPCODE
Bytes
Clock
Cycles
MS51 V.S. Tradition
80C51 Speed Ratio
NOP
00
1
1
12
ADD A, Rn
28~2F
1
2
6
ADD A, direct
25
2
3
4
ADD A, @Ri
26, 27
1
4
3
ADD A, #data
24
2
2
6
ADDC A, Rn
38~3F
1
2
6
ADDC A, direct
35
2
3
4
ADDC A, @Ri
36, 37
1
4
3
ADDC A, #data
34
2
2
6
SUBB A, Rn
98~9F
1
2
6
SUBB A, direct
95
2
3
4
SUBB A, @Ri
96, 97
1
4
3
SUBB A, #data
94
2
2
6
INC A
04
1
1
12
INC Rn
08~0F
1
3
4
INC direct
05
2
4
3
INC @Ri
06, 07
1
5
2.4
INC DPTR
A3
1
1
24
DEC A
14
1
1
12
DEC Rn
18~1F
1
3
4
DEC direct
15
2
4
3
DEC @Ri
16, 17
1
5
2.4
MUL AB
A4
1
4
12
DIV AB
84
1
4
12
DA A
D4
1
1
12
ANL A, Rn
58~5F
1
2
6
ANL A, direct
55
2
3
4
ANL A, @Ri
56, 57
1
4
3