參數(shù)資料
型號(hào): W78E52C
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(shù): 8/22頁
文件大?。?/td> 305K
代理商: W78E52C
W78E52C/W78E052C
- 8 -
PS2, PS1, PS0: Watch-dog prescaler timer select. Prescaler is selected when set PS2~0 as follows:
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
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