TLE8262EXT Infineon Technologies, TLE8262EXT Datasheet - Page 57
TLE8262EXT
Manufacturer Part Number
TLE8262EXT
Description
Manufacturer
Infineon Technologies
Datasheet
1.TLE8262EXT.pdf
(93 pages)
Specifications of TLE8262EXT
Operating Supply Voltage (typ)
9/12/15/18/24/28V
Operating Supply Voltage (min)
5.5V
Operating Temperature Classification
Automotive
Mounting
Surface Mount
Pin Count
36
Lead Free Status / Rohs Status
Supplier Unconfirmed
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Figure 23
Figure 24
11.2.3
The settings of the watchdog can be changed during the operation of the watchdog. The change is done with a
SPI programming into the Watchdog Configuration Register. The new setting is programmed together with a valid
watchdog trigger according to the old settings. The timer with the new settings starts with this SPI command. The
toggling of the “WD Refresh” bit needs to be continued (transition HIGH to LOW or LOW to HIGH) with the new
settings.
If the new settings were not valid, the watchdog will continue with the old settings and generate a “Wrong WD Set”
interrupt.
Data Sheet
Refresh
WD
RO
bit
timer reset
Watchdog
t
CWmin
Window Watchdog Definitions
Window Watchdog Timing Diagram for config 1 and config 3
Changing the Watchdog Settings
t
CW
closed window
t
OW
operation
t
CW
normal
t
CWmax
Window Watchdog Timing (SPI)
t
OW
t
WD
t
CW
+t
OW
0.45
certainty
Un-
(too long)
t
Time-out
WDR
0.55
t
LW
57
safe trigger area
open window
t
LW
t
OWmin
operation
normal
t
CW
t
OWmax
t
OW
t
CW
(too short)
0.9
timeout
Supervision Functions
uncertainty
t
LW
Rev. 1.0, 2009-03-31
t
1.0
CW
Wd1_per .vsd
operation
t
OW
normal
Wd2_per.vsd
TLE8262E
1.1
t /
[t
WDPER
t
t
]
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