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: 28/76页
文件大小: 1175K
代理商: AT87251G2D-SLSUM
28
AT/TSC8x251G2D
4135D–8051–08/05
Notes:
1. Logical instructions that affect a bit are in Table 27.
2. A shaded cell denotes an instruction in the C51 Architecture.
3. If this instruction addresses an I/O Port (Px, x = 0-3), add 1 to the number of states. Add 2 if it addresses a Peripheral SFR.
4. If this instruction addresses an I/O Port (Px, x = 0-3), add 2 to the number of states. Add 3 if it addresses a Peripheral SFR.
5. If this instruction addresses external memory location, add N+2 to the number of states (N: number of wait states).
6. If this instruction addresses external memory location, add 2(N+2) to the number of states (N: number of wait states).
Table 23.
Summary of Logical Instructions (2/2)
Note:
1. A shaded cell denotes an instruction in the C51 Architecture.
Shift Left LogicalSLL <dest><dest>
0
0
<dest>
n+1
<dest>
n
, n = 0..msb-1
(CY)
msb
Shift Right ArithmeticSRA <dest><dest>
msb
<dest>
msb
<dest>
n-1
<dest>
n
, n = msb..1
(CY)
<dest>
0
Shift Right LogicalSRL <dest><dest>
msb
0
<dest>
n-1
<dest>
n
, n = msb..1
(CY)
<dest>
0
SwapSWAP AA
3:0
A
7:4
Mnemonic
<dest>,
<src>
(1)
Comments
Binary Mode
Source Mode
Bytes
States
Bytes
States
SLL
Rm
Shift byte register left through the
MSB
3
2
2
1
WRj
Shift word register left through the
MSB
3
2
2
1
SRA
Rm
Shift byte register right
3
2
2
1
WRj
Shift word register right
3
2
2
1
SRL
Rm
Shift byte register left
3
2
2
1
WRj
Shift word register left
3
2
2
1
SWAP
A
Swap nibbles within ACC
1
2
1
2
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