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參數資料
型號: W77E58
廠商: WINBOND ELECTRONICS CORP
元件分類: 8位微控制器
英文描述: 8 BIT MICROCONTROLLER
中文描述: 8位微控制器
文件頁數: 42/85頁
文件大小: 570K
代理商: W77E58
Preliminary W77E58
- 42 -
of the CPU was held for the desired period. There is no effect on any other instruction or its timing. By
default, the Stretch value is set at 1, giving a MOVX instruction of 3 machine cycles. If desired by the
user the stretch value can be set to 0 to give the fastest MOVX instruction of only 2 machine cycles.
Table 4. Data Memory Cycle Stretch Values
M2
M1
M0
Machine
Cycles
RD
or
WR
strobe width
in Clocks
RD
or
WR
strobe width
@ 25 MHz
80 nS
160 nS
320 nS
480 nS
640 nS
800 nS
960 nS
1120 nS
RD
or
WR
strobe width
@ 40 MHz
50 nS
100 nS
200 nS
300 nS
400 nS
500 nS
600 nS
700 nS
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
2
2
4
8
12
16
20
24
28
3(default)
4
5
6
7
8
9
Next Instruction
Machine Cycle
Second
Machine cycle
First
Machine cycle
Last Cycle
of Previous
Instruction
C4
PORT 2
PORT 0
WR
PSEN
ALE
CLK
C3
C2
D0-D7
A0-A7
D0-D7
A0-A7
D0-D7
A0-A7
D0-D7
A15-A8
A15-A8
A15-A8
A15-A8
A0-A7
C1
C4
C3
C2
C1
C4
C3
C2
C1
C4
C3
C2
C1
MOVX instruction cycle
Next Inst. Read
Next Inst.
Address
MOVX Data out
MOVX Data
Address
MOVX Inst.
Address
MOVX Inst
.
Figure 8. Data Memory Write with Stretch Value = 0
相關PDF資料
PDF描述
W77E58-25 8 BIT MICROCONTROLLER
W77E58-40 8 BIT MICROCONTROLLER
W77E58F-25 8 BIT MICROCONTROLLER
W77E58F-40 8 BIT MICROCONTROLLER
W77E58P-25 8 BIT MICROCONTROLLER
相關代理商/技術參數
參數描述
W77E58-25 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER
W77E58-40 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER
W77E58F-25 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER
W77E58F-40 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER
W77E58P-25 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER