參數(shù)資料
型號(hào): W78E51BP-24
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT MTP MICROCONTROLLER
中文描述: 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁(yè)數(shù): 7/23頁(yè)
文件大小: 324K
代理商: W78E51BP-24
Preliminary W78E51B
Publication Release Date: December 1998
- 7 -
Revision A1
Watchdog Timer Control Register
Bit:
7
6
5
4
-
3
-
2
1
0
ENW
CLRW
WIDL
PS2
PS1
PS0
Mnemonic: WDTC
Address: 8FH
ENW : Enable watch-dog if set.
CLRW: Clear watch-dog timer and prescaler if set. This flag will be cleared automatically
WIDL : If this bit is set, watch-dog is enabled under IDLE mode. If cleared, watch-dog is disabled
under IDLE mode. Default is cleared.
PS2, PS1, PS0: Watch-dog prescaler timer select. Prescaler is selected when set PS2~0 as follows:
PS2 PS1 PS0
0 0 0
0 1 0
0 0 1
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
PRESCALER SELECT
2
4
8
16
32
64
128
256
The time-out period is obtained using the following equation :
1
OSC
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.
2
PRESCALER 1000 12 mS
14
×
×
OSC
1/12
PRESCALER
14-BIT TIMER
CLEAR
CLRW
EXTERNAL
RESET
INTERNAL
RESET
WIDL
IDLE
ENW
Watchdog Timer Block Diagram
相關(guān)PDF資料
PDF描述
W78E51B-24 8-BIT MTP MICROCONTROLLER
W78E51B-40 8-BIT MTP MICROCONTROLLER
W78E51B 8-BIT MTP Monitor Microcontroller(多次可編程的8位的監(jiān)視微控制器)
W78E51BF-24 8-BIT MTP MICROCONTROLLER
W78E51BF-40 8-BIT MTP MICROCONTROLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W78E51BP-40 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MTP MICROCONTROLLER
W78E51C 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 bit micocontroller
W78E51C_06 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W78E51P-16 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
W78E51P-24 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller