The TLE9185xx can supply the microcontroller through the interrupt (INTN) or reset (RSTN) pins in case a voltage drop of the battery voltage occurs while the module is in Sleep Mode:
1. The microcontroller sends the TLE9185xx into Sleep Mode and after it goes itself to Sleep Mode.
2. VS/VSINT drops below the monitoring threshold voltage*VPOR,f*and rises above the voltage*VPOR,r. The TLE9185xx wakes up autonomously
3. The internal power supply VCC1 is turned on, the TLE9185xx starts the long open widow (tLW). During this time (tLW) there is no reset and no interrupt, the pins RSTN and INTN are pulled to high
4. The microcontroller is supplied through those pins. If the power management device does not keep the microcontroller reset low, then the microcontroller would start to operate without external supervision.*
The microcontroller is now awake and can send the TLE9185xx again into Sleep Mode.
