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參數資料
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: 72/85頁
文件大小: 596K
代理商: W77E516F-25
Preliminary W77E516
- 72 -
MOV
MOV
TA, #055h
WDCON, #00h 3 M/C
3 M/C
Example 2: Valid access
MOV
MOV
NOP
SETB EWT
Example 3: Invalid access
MOV
MOV
NOP
NOP
CLR
TA, #0AAh
TA, #055h
3 M/C
3 M/C
1 M/C
2 M/C
TA, #0AAh
TA, #055h
POR
3 M/C
3 M/C
1 M/C
1 M/C
2 M/C
Example 4: Invalid Access
MOV
NOP
MOV
SETB EWT
TA, #0AAh
TA, #055h
3 M/C
1 M/C
3 M/C
2 M/C
In the first two examples, the writing to the protected bits is done before the 3 machines cycle window
closes. In Example 3, however, the writing to the protected bit occurs after the window has closed, and
so there is effectively no change in the status of the protected bit. In Example 4, the second write to TA
occurs 4 machine cycles after the first write, therefore the timed access window in not opened at all,
and the write to the protected bit fails.
10. ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
CONDITION
RATING
UNIT
DC Power Supply
V
DD
V
SS
-0.3
+7.0
V
Input Voltage
V
IN
V
SS
-0.3
V
DD
+0.3
V
Operating Temperature
T
A
0
+70
°
C
°
C
Storage Temperatute
Tst
-55
+150
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability
of the device.
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相關代理商/技術參數
參數描述
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