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DESCRIPTION OF INSTRUCTIONS
241
Mnemonic
Instruction code
D7 D6 D5 D4 D3 D2 D1 D0
Byte Cycle Description Page
Classifi-
cation
Subroutine
instructions
Jump instructions Branching instructions
RETI
AJMP
LJMP
SJMP
JMP
CJNE
addr 11
addr 16
rel
@A+DPTR
A, direct, rel
1
2
3
2
1
3
2
2
2
2
2
2
(PC8~15)←((SP))
(SP)←(SP)–1
(PC
0~7)←((SP))
(SP)←(SP)–1
*INTERRUPT ENABLE
(PC)←(PC)+2
(PC
0~10)←A0~10
(PC0~15)←A0~15
(PC)←(PC)+2
(PC)←(PC)+relative offset
(PC)←(A)+(DPTR)
(PC)←(PC)+3
IF (A)
≠
(direct address)
THEN
(PC)←(PC)+relative offset
IF (A)<(direct address)
THEN
(C)←1
ELSE
(C)←0
348
255
310
355
300
268
00110010
A10
A9 A8 00001
A
7 A6 A5 A4 A3 A2 A1 A0
00000010
A15 A14 A13 A12 A11 A10
A9 A8
A7 A6 A5 A4 A3 A2 A1 A0
10000000
R
7 R6 R5 R4 R3 R2 R1 R0
01110011
10110101
a
7 a6 a5 a4 a3 a2 a1 a0
R7 R6 R5 R4 R3 R2 R1 R0