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參數資料
| 型號： | W78E54C |
| 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： | 9/24頁 |
| 文件大?。?/td> | 198K |
| 代理商： | W78E54C |
W78E54C/W78E054C
Publication Release Date: October 3, 2006
- 9 -
Revision A4
PS2 PS1 PS0
PRESCALER SELECT
0 0 0
2
0 0 1
4
0 1 0
8
0 1 1
16
1 0 0
32
1 0 1
64
1 1 0
128
1 1 1
256
The time-out period is obtained using the following equation:
1
OSC
2
PRESCALER 1000 12 mS
14
×
×
Before Watchdog time-out occurs, the program must clear the 14-bit timer by writing 1 to WDTC.6
(CLRW). After 1 is written to this bit, the 14-bit timer, prescaler and this bit will be reset on the next
instruction cycle. The Watchdog timer is cleared on reset.
OSC
1/12
PRESCALER
14-BIT TIMER
CLEAR
CLRW
EXTERNAL
RESET
INTERNAL
RESET
WIDL
IDLE
ENW
Watchdog Timer Block Diagram
Typical Watch-Dog time-out period when OSC = 20 MHz
PS2 PS1 PS0
WATCHDOG TIME-OUT PERIOD
0 0 0
19.66 mS
0 0 1
39.32 mS
0 1 0
78.64 mS
0 1 1
157.28 mS
1 0 0
314.57 mS
1 0 1
629.14 mS
1 1 0
1.25 S
1 1 1
2.50 S
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相關代理商/技術參數 |
參數描述 |
|---|---|
| W78E54F-16 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W78E54F-24 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W78E54F-40 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W78E54M-16 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W78E54M-24 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
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