TLE6363 Datasheet, PDF (15/28 Pages) Infineon Technologies AG – Multifunctional Voltage Regulator and Watchdog

TLE 6363
a) Perfect Triggering after Power on Reset
V_CC
V_RT
t_RD = 64 Cycles
t
RO
32 Cycles
t
WDWI
CW OW CW OW CW CW
32 Cycles
t
WDI
xx
xx xx
xx
xx xx
SEN
t₁
t₂ t₃
t
System Failed
System Enable
System Failed
b) Incorrect Triggering
t
t_WDR = 64 Cycles
t_SR = 64 Cycles
t_SR = 64 Cycles
RO
t
T_WD = 128 Cycles
WDWI
CW OW
CW OW
CW OW CW OW
t
32 Cycles
WDI
xx x
xx x
xx
xx x xx
x
xx
1)
2)
3)
SEN
4)
t
1) _Pretrigger
2) _{Incorrect trigger duration within watchdog}
3)
open window OW: t_HIGH < 2 Cycles
Incorrect trigger duration within watchdog
4)
open window OW:
Missing trigger
t_LOW
<
2
Cycles
t
Legend: WDWI = Internal Watchdog Window
OW = Open Window (trigger signal at WDI)
CW = Closed Window (trigger signal at WDI)
x = Sample Point
AED02945
Figure 5 Window Watchdog Function
Data Sheet V 1.1
15
2000-11-8