參數(shù)資料
型號(hào): W77IE58
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, 25 MHz, MICROCONTROLLER, PDIP40
封裝: DIP-40
文件頁(yè)數(shù): 46/90頁(yè)
文件大?。?/td> 409K
代理商: W77IE58
Preliminary W77IE58
- 46 -
the instruction only results in the elongation of the MOVX instruction, as if the state 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
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
80 nS
160 nS
320 nS
480 nS
640 nS
800 nS
960 nS
1120 nS
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(guān)PDF資料
PDF描述
W77L32 8-BIT MICROCONTROLLER
W77LE532 8 BIT MICROCONTROLLER
W77LE58 8 BIT MICROCONTROLLER
W77LE58-25 8 BIT MICROCONTROLLER
W77LE58F-25 8 BIT MICROCONTROLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W77IE58_06 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W77J_1G WAF 制造商:Fairchild Semiconductor Corporation 功能描述:
W77J_2GST WAF 制造商:Fairchild Semiconductor Corporation 功能描述:
W77J_3G WAF 制造商:Fairchild Semiconductor Corporation 功能描述:
W77L032A 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER