Data Sheet
113
Rev. 1.00
2017-07-31
TLE9263BQXV33
Supervision Functions
15.2.5
Watchdog Start in SBC Stop Mode due to Bus Wake
In SBC Stop Mode the Watchdog can be disabled. In addition a feature is available which will start the
watchdog with any BUS wake (CAN or LIN) during SBC Stop Mode. The feature is enabled by setting the bit
WD_EN_ WK_BUS
= 1
(= default value after POR). The bit can only be changed in SBC Normal Mode and needs to be programmed
before starting the watchdog disable sequence.
A wake on CAN and LINx will generate an interrupt and the RXD pin for LINx or CAN is pulled to low. By these
signals the microcontroller is informed that the watchdog is startedwith a long open window. After the long
open window the watchdog has to be served as configured in the
WD_CTRL
register.
To disable the watchdog again, the SBC needs to be switched to Normal Mode and the sequence needs to be
sent again.
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