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参数资料
| 型号： | TLE6711G |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO14 |
| 封装： | PLASTIC, SOP-14 |
| 文件页数： | 25/25页 |
| 文件大小： | 963K |
| 代理商： | TLE6711G |
TLE 6711
Circuit Description
Data Sheet
9
Rev. 3.4, 2007-08-16
is HIGH the system enable goes active HIGH with the first valid watchdog trigger pulse at pin WDI. The SEN output
goes LOW immediately if a pretrigger, a missing trigger or a power down reset occurs.
Figure 5
Window Watchdog Definitions 1
Figure 6
Window Watchdog Definitions 2
t
CWmax= tCW (1+ )
closed window
open window
t
CW=32*tCYL
definition
f
OSC=fOSCmax
reset start delay time after window
watchdog timeout
reset duration time after window
watchdog time-out
t
SR = 64*tCYL
t
OW=32*tCYL
t
WDR = 64*tCYL
T
WD = 128*tCYL
t
OWmin
f
OSC=fOSCmin
definition
worst case
t
WD
Example with:
t
CYL=1ms
=10% (oscillator deviation)
t
(CW+OW)min =(tCW+tOW)*(1-)=
=(32+32)x0,9= 57,6ms
t
CWmax= tCW(1+)=32*1,1=35,2ms
t
EOW = end of open window
t
ECW
t
(CW+OW)min = ( tCW+ tOW ) (1 - )
AET02952
Watchdog
trigger signal
Valid
Not valid
Indifferent
= Watchdog decoder sample point
ECW
t
Closed window
WDI
Open window
EOW
t
Open window
Closed window
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