参数资料
型号: MSM80C51F-XXXGS
厂商: OKI ELECTRIC INDUSTRY CO LTD
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP44
封装: 0.80 MM PITCH, PLASTIC, QFP-44
文件页数: 13/39页
文件大小: 355K
代理商: MSM80C51F-XXXGS
20/38
Semiconductor
MSM80C31F/80C51F
Instruction Set Details (continued)
D6 D5 D4 D3
D1
Bytes Cycles
Type
Mnemonic
Instruction code
Description
D7
D2
D0
Branch
instructions
10
11
0
1
01
CJNE A, direct,
rel
32
(PC) ¨ (PC)+3
IF
(A)π(direct address)
THEN
(PC) ¨ (PC)+relative offset
IF
(A)<(direct address)
THEN
(C) ¨ 1
ELSE
(C) ¨ 0
a7 a6 a5 a4 a3 a2 a1 a0
R7 R6 R5 R4 R3 R2 R1 R0
10
11
0
1
00
CJNE A, #data,
rel
32
(PC) ¨ (PC)+3
IF
(A)π #data
THEN
(PC) ¨ (PC)+relative offset
IF
(A)< #data
THEN
(C) ¨ 1
ELSE
(C) ¨ 0
I7
I6
I5
I4
I3 I2
I1
I0
R7 R6 R5 R4 R3 R2 R1 R0
10
11
1
r2 r1
r0
CJNE Rr,
#data, rel
32
(PC) ¨ (PC)+3
IF
((Rr))π #data
THEN
(PC) ¨ (PC)+relative offset
IF
(Rr))< #data
THEN
(C) ¨ 1
ELSE
(C) ¨ 0
I7
I6
I5
I4
I3 I2
I1
I0
R7 R6 R5 R4 R3 R2 R1 R0
10
11
0
1
r0
CJNE @Rr,
#data, rel
32
(PC) ¨ (PC)+3
IF
((Rr))π #data
THEN
(PC) ¨ (PC)+relative offset
IF
((Rr))< #data
THEN
(C) ¨ 1
ELSE
(C) ¨ 0
I7
I6
I5
I4
I3 I2
I1
I0
R7 R6 R5 R4 R3 R2 R1 R0
11
01
1
r2 r1
r0
DJNZ Rr, rel
22
(PC) ¨ (PC)+2
(Rr) ¨ (Rr)–1
IF
(Rr)< 0
THEN
(PC) ¨ (PC)+relative offset
R7 R6 R5 R4 R3 R2 R1 R0
11
01
0
1
01
DJNZ direct,
rel
32
(PC) ¨ (PC)+3
(direct address) ¨ (direct address)–1
IF
(direct address)π 0
THEN
(PC) ¨ (PC)+relative offset
a7 a6 a5 a4 a3 a2 a1 a0
R7 R6 R5 R4 R3 R2 R1 R0
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