M80C51 データシートの表示（PDF） - Oki Electric Industry

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コンポーネント説明

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M80C51

CMOS 8-Bit Microcontroller

Oki Electric Industry 

¡ 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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