Hi all,
in the BQ76952 technical reference is stated regarging the internal watchdog:
11.7 Internal Watchdog Reset
The BQ76952 device integrates an internal watchdog circuit for the internal processor, which will trigger a
watchdog fault if it is not serviced by the processor at regular intervals. A watchdog fault may occur if the internal
processor is unexpectedly halted or overloaded with tasks, such as servicing excessive serial communications.
When a watchdog fault occurs, the internal processor is reset, and the 0x12 Battery Status()[WD] bit will be set
after the reset is complete.
There are additional checks performed by the device which can also trigger a watchdog reset. The BQ76952
device incorporates an ADC measurement watchdog, which monitors whether the ADC and coulomb counter
measurements are completing as expected, and if not will trigger a watchdog fault. A RAM integrity check is also
performed periodically and forces a watchdog reset if corruption is detected. If the device detects a RAM error
within a programmable time (set by Power:Shutdown:RAM Fail Shutdown Time) after a watchdog reset, the
device will enter SHUTDOWN mode instead of resetting, in order to avoid unwanted reset loops in the case of a
RAM failure.
Whats does "the internal processor is reset" mean, e.g. what does this mean for the FET state? Will be BQ restart with precharging?
Thanks,
Andreas
