參數(shù)資料
型號: AT87251G2D-SLSUM
廠商: Atmel
文件頁數(shù): 21/77頁
文件大?。?/td> 0K
描述: IC 8051 MCU 32K OTP 24MHZ 44PLCC
標準包裝: 972
系列: 8x251
核心處理器: C251
芯體尺寸: 8/16-位
速度: 24MHz
連通性: EBI/EMI,I²C,Microwire,SPI,UART/USART
外圍設(shè)備: POR,PWM,WDT
輸入/輸出數(shù): 32
程序存儲器容量: 32KB(32K x 8)
程序存儲器類型: OTP
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-LCC(J 形引線)
包裝: 管件
28
AT/TSC8x251G2D
4135F–8051–11/06
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)
← <dest>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 AA3:0 A7:4
Mnemonic
<dest>,
<src>
(1)
Comments
Binary Mode
Source Mode
Bytes
States
Bytes
States
SLL
Rm
Shift byte register left through the
MSB
32
2
1
WRj
Shift word register left through the
MSB
32
2
1
SRA
Rm
Shift byte register right
3
2
1
WRj
Shift word register right
3
2
1
SRL
Rm
Shift byte register left
3
2
1
WRj
Shift word register left
3
2
1
SWAP
A
Swap nibbles within ACC
1
2
1
2
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