M80C51 データシートの表示（PDF） - Oki Electric Industry
部品番号
コンポーネント説明
メーカー
M80C51 Datasheet PDF : 39 Pages
| |||
¡ Semiconductor
MSM80C31F/80C51F
Instruction Set Details
Type
Instruction code
Mnemonic
D7 D6 D5 D4 D3 D2 D1 D0
ADD A, Rr
ADD A, direct
0 0 1 0 1 r2 r1 r0
0010 0101
ADD A, @Rr
ADD A, #data
a7 a6 a5 a4 a3 a2 a1 a0
0 0 1 0 0 1 1 r0
0010 0100
I7 I6 I5 I4 I3 I2 I1 I0
ADDC A, Rr
0 0 1 1 1 r2 r1 r0
ADDC A, direct 0 0 1 1 0 1 0 1
a7 a6 a5 a4 a3 a2 a1 a0
ADDC A, @Rr 0 0 1 1 0 1 1 r0
ADDC A, #data 0 0 1 1 0 1 0 0
I7 I6 I5 I4 I3 I2 I1 I0
SUBB A, Rr
1 0 0 1 1 r2 r1 r0
SUBB A, direct 1 0 0 1 0 1 0 1
a7 a6 a5 a4 a3 a2 a1 a0
SUBB A, @Rr 1 0 0 1 0 1 1 r0
SUBB A, #data 1 0 0 1 0 1 0 0
MUL AB
I7 I6 I5 I4 I3 I2 I1 I0
1010 0100
DIV AB
1000 0100
Bytes Cycles
Description
1 1 (AC), (0V), (C), (A) ¨ (A)+(Rr)
2 1 (AC), (0V), (C), (A) ¨ (A)+(direct
address)
1 1 (AC), (0V), (C), (A) ¨ (A)+((Rr))
2 1 (AC), (0V), (C), (A) ¨ (A)+#data
1 1 (AC), (0V), (C), (A) ¨ (A)+(C)+(Rr)
2 1 (AC), (0V), (C), (A) ¨ (A)+(C)+
(direct address)
1 1 (AC), (0V), (C), (A) ¨ (A)+(C)+((Rr))
2 1 (AC), (0V), (C), (A) ¨ (A)+(C)+#data
1 1 (AC), (0V), (C), (A) ¨ (A)–((C))+((Rr))
2 1 (AC), (0V), (C), (A) ¨ (A)–((C)+
(direct address))
1 1 (AC), (0V), (C), (A) ¨ (A)–((C)+((Rr))
2 1 (AC), (0V), (C), (A) ¨ (A)–((C)+
#data)
1 4 (AB) ¨ (A) x (B)
1 4 (A)quotient,
(B) remainder ¨ (A)/(B)
DA A
CLR A
CPL A
PL A
1 1 0 1 0 1 0 0 1 1 When the contents of accumulator bits
0 thru 3 are greater than 9, or when
auxiliary carry (AC) is 1, 6 is added to
bits 0 thru 3. Bits 4 thru 7 are then
examined, and when bits 4thru 7
follwoing compensation of lower bits 0
thru 3 is greater than 9, or when carry
(C) is 1, 6 is added to bits 4 thru 7. As
a result, the cary flag can be set, but
cannot be cleared.
1 1 1 0 0 1 0 0 1 1 (A) ¨ 0
1 1 1 1 0 1 0 0 1 1 (A) ¨ (A)
0010 0011 1 1
Accumulator
C ¨¨¨¨¨¨¨¨
7
0
PL C
0011 0011 1 1
Accumulator
C ¨¨¨¨¨¨¨¨
7
0
15/38
Share Link: 