M80C51 데이터 시트보기 (PDF) - Oki Electric Industry
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M80C51 Datasheet PDF : 39 Pages
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¡ Semiconductor
MSM80C31F/80C51F
Instruction Set Details (continued)
Type Mnemonic
JZ rel
JNZ rel
JC rel
JNC rel
JB bit, rel
JNB bit, rel
JBC bit, rel
Instruction code
Bytes Cycles
D7 D6 D5 D4 D3 D2 D1 D0
Description
0110 0000 2
R7 R6 R5 R4 R3 R2 R1 R0
2 (PC) ¨ (PC)+2
IF
(A) = 0
THEN
(PC) ¨ (PC)+relative offset
0111 0000 2
R7 R6 R5 R4 R3 R2 R1 R0
2 (PC) ¨ (PC)+2
IF
(A) π 0
THEN
(PC) ¨ (PC)+relative offset
0100 0000 2
R7 R6 R5 R4 R3 R2 R1 R0
2 (PC) ¨ (PC)+2
IF (C) = 1
THEN
(PC) ¨ (PC)+relative offset
0101 0000 2
R7 R6 R5 R4 R3 R2 R1 R0
2 (PC) ¨ (PC)+2
IF (C) = 0
THEN
(PC) ¨ (PC)+relative offset
0010 0000 3
b7 b6 b5 b4 b3 b2 b1 b0
R7 R6 R5 R4 R3 R2 R1 R0
0011 0000 3
b7 b6 b5 b4 b3 b2 b1 b0
R7 R6 R5 R4 R3 R2 R1 R0
0001 0000 3
b7 b6 b5 b4 b3 b2 b1 b0
R7 R6 R5 R4 R3 R2 R1 R0
2 (PC) ¨ (PC)+3
IF (bit address) = 1
THEN
(PC) ¨ (PC)+relative offset
2 (PC) ¨ (PC)+3
IF (bit address) = 0
THEN
(PC) ¨ (PC)+relative offset
2 (PC) ¨ (PC)+3
IF (bit address) = 1
THEN
(bit address) ¨ 0
(PC) ¨ (PC)+relative offset
MOVX A, @Rr 1 1 1 0 0 0 0 r0 1 2 (A) ¨ ((Rr)) EXTERNAL RAM
MOVX A,
1 1 1 0 0 0 0 0 1 2 (A) ¨ ((DPTR)) EXTERNAL RAM
@DPTR
MOVX @Rr, A 1 1 1 1 0 0 1 r0 1 2 (Rr) ¨ (A) EXTERNAL RAM
MOVX
1 1 1 1 0 0 0 0 1 2 ((DPTP)) ¨ (A) EXTERNAL RAM
@DPTR, A
NOP
0 0 0 0 0 0 0 0 1 1 (PC) ¨ (PC)+1
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