TLE7263E Datasheet, PDF (54/63 Pages) Infineon Technologies AG – Integrated HS-CAN, LIN, LDO and HS Switch System Basis Chip

TLE 7263E
Electrical Characteristics
t_WD
t_CWmax
t_CWmin
closed window
t_{O Wm in}
t_OWmax
open window
safe trigger area
0.4
0.6
t_WWRP
0.8
1.0
t_WWRP : Window Watchdog Reset Period set via SPI, see table 9
Figure 17 Watchdog Time-Out Definitions
t / [t_WDPER]
1.2
t_CW
t_OW
WD
t_CW
t_OW
t_CW+t_OW
t_LW
Trigger
t_CW
t_OW
t_LW
t_CW
t_LW
t_CW
t_OW
Reset
t_WDR
t
Out
Watchdog
timer reset
normal
operation
timeout
(too long)
Figure 18 Watchdog Timing Diagram
normal
operation
timeout
(too short)
t
normal
operation
Data Sheet
54
Rev. 1.51, 2007-06-22