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參數(shù)資料
型號： W77E516F-25
廠商： WINBOND ELECTRONICS CORP
元件分類： 微控制器/微處理器
英文描述： 8-BIT MICROCONTROLLER
中文描述： 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP44
封裝： QFP-44
文件頁數(shù)： 34/85頁
文件大?。?/td> 596K
代理商： W77E516F-25
Preliminary W77E516
- 34 -
Instruction
The W77E516 executes all the instructions of the standard 8032 family. The operation of these
instructions, their effect on the flag bits and the status bits is exactly the same. However, timing of
these instructions is different. The reason for this is two fold. Firstly, in the W77E516, each machine
cycle consists of 4 clock periods, while in the standard 8032 it consists of 12 clock periods. Also, in the
W77E516 there is only one fetch per machine cycle i.e. 4 clocks per fetch, while in the standard 8032
there can be two fetches per machine cycle, which works out to 6 clocks per fetch.
The advantage the W77E516 has is that since there is only one fetch per machine cycle, the number
of machine cycles in most cases is equal to the number of operands that the instruction has. In case of
jumps and calls there will be an additional cycle that will be needed to calculate the new address. But
overall the W77E516 reduces the number of dummy fetches and wasted cycles, thereby improving
efficiency as compared to the standard 8032.
Table 2. Instructions that affect Flag settings
Instruction
Carry
Overflow
Auxiliary Carry
Instruction
Carry
Overflow
Auxiliary Carry
ADD
X
X
X
CLR C
0
ADDC
X
X
X
CPL C
X
SUBB
X
X
X
ANL C, bit
X
MUL
0
X
ANL C, bit
X
DIV
0
X
ORL C, bit
X
DA A
X
ORL C, bit
X
RRC A
X
MOV C, bit
X
RLC A
X
CJNE
X
SETB C
1
A "X" indicates that the modification is as per the result of instruction.
Table 3. Instruction Timing for W77E516
Instruction
HEX
Op-Code
Bytes
W77E516
Machine
Cycles
W77E516
Clock
Cycles
8032
Clock
Cycles
W77E516
vs.
8032 Speed
Ratio
NOP
00
1
1
4
12
3
ADD A, R0
28
1
1
4
12
3
ADD A, R1
29
1
1
4
12
3
ADD A, R2
2A
1
1
4
12
3
ADD A, R3
2B
1
1
4
12
3
ADD A, R4
2C
1
1
4
12
3
ADD A, R5
2D
1
1
4
12
3
相關(guān)PDF資料
PDF描述
W77E516F-40 8-BIT MICROCONTROLLER
W77E516P-25 8-BIT MICROCONTROLLER
W77E516P-40 8-BIT MICROCONTROLLER
W77E532 8 BIT MICROCONTROLLER
W77E58 8 BIT MICROCONTROLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W77E516F-40 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W77E516P-25 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W77E516P-40 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W77E532 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER
W77E532_07 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
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