TLE6368 Datasheet, PDF (15/58 Pages) Infineon Technologies AG – Multi-Voltage Processor Power Supply

TLE 6368 / SONIC
Perfect triggering after Power on Reset
V_{Q_LDO1}
V_Rth1
1V
t
R1
t_RES
t
Watchdog
window
t_CW
t_SR
CW OW CW OW CW
CW OW
t
CS
t
1)
2)
2)
2)
ERR
t
Incorrect triggering
Watchdog
window
CW OW
t
CS
with WD-
trig=1
t
3)
4)
1) Watchdog enable command with no trigger: D0D9D14D15=0100
2) Watchdog trigger: D15=1
3) Pretrigger
4) Missing trigger
Legend:
OW = Open window
CW = Closed window
Figure 7 Window watchdog timing
Figure 7 gives some timing information about the window watchdog. Looking at the
upper signals the perfect triggering of the watchdog is shown. When the 5V linear
regulator Q_LDO1 reaches its reset threshold, the reset delay time has to run off before
Data Sheet, Rev. 1.32
15
2004-10-15