参数资料
型号: AT87251G2D-SLSUM
厂商: ATMEL CORP
元件分类: 微控制器/微处理器
英文描述: B/16-BIT MICROCONTROLLER WITH SERIAL COMMUNICATION INTERFACES
中文描述: 16-BIT, OTPROM, 24 MHz, MICROCONTROLLER, PQCC44
封装: GREEN, PLASTIC, LCC-44
文件页数: 29/76页
文件大小: 1175K
代理商: AT87251G2D-SLSUM
29
AT/TSC8x251G2D
4135D–8051–08/05
Table 24.
Summary of Multiply, Divide and Decimal-adjust Instructions
Note:
1. A shaded cell denotes an instruction in the C51 Architecture.
MultiplyMUL AB(B:A)
(A)
×
(B)
MUL <dest>, <src>extended dest opnd
dest opnd
×
src opnd
DivideDIV AB(A)
Quotient ((A)
(B))
(B)
Remainder ((A)
(B))
DivideDIV <dest>, <src>ext. dest opnd high
Quotient (dest opnd
src opnd)
ext. dest opnd low
Remainder (dest opnd
src opnd)
Decimal-adjust ACCDA AIF [[(A)
3:0
> 9]
[(AC) = 1]]
for Addition (BCD) THEN (A)
3:0
(A)
3:0
+ 6 !affects CY;
IF [[(A)
7:4
> 9]
[(CY) = 1]]
THEN (A)
7:4
(A)
7:4
+ 6
Mnemonic
<dest>,
<src>
(1)
Comments
Binary Mode
Source Mode
Bytes
States
Bytes
States
MUL
AB
Multiply A and B
1
5
1
5
Rmd, Rms
Multiply byte register and byte register
3
6
2
5
WRjd, WRjs
Multiply word register and word register
3
12
2
11
DIV
AB
Divide A and B
1
10
1
10
Rmd, Rms
Divide byte register and byte register
3
11
2
10
WRjd, WRjs
Divide word register and word register
3
21
2
20
DA
A
Decimal adjust ACC
1
1
1
1
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