V6155

The V6155 offers a high level of integration by voltage monitoring and software monitoring in an 8 lead package. A comparator monitors the voltage applied at the V_IN input comparing it with an internal 1.275 V reference. The power-on reset function is initialized after V_IN reaches 1.275 V and takes the reset output inactive after T_POR depending of external resistance. The reset output goes active low when the V_IN voltage is less than 1.275 V. The RES and EN outputs are guaranteed to be in a correct state for a supply voltage as low as 1.2 V. The watchdog function monitors software cycle time and execution. If software clears the watchdog too quickly (incorrect cycle time) or too slowly (incorrect execution), it will cause the system to be reset. The system enable output prevents critical control functions being activated until software has successfully cleared the watchdog three times. Such a security could be used to prevent motor controls being energized on repeated resets of a faulty system. If the microcontroller does not work that means no signal on the TCL input the V6155 goes in a standby mode (CAN-bus sleep detector).