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TCAN1146-Q1: How to reset MCU if MCU is hang up after power on and no SPI trigger

Marc Liu
Expert 3690 points
Part Number: TCAN1146-Q1
Other Parts Discussed in Thread: TCAN1145-Q1

Tool/software:

Hi Team,

The watchdog is default disabled after power on. And customer worry if the MCU is hang up after power on, how to reset MCU?

This is for Fusa consideration. 

Thank you!

Marc

  • 0
    TI__Mastermind 28990 points

    Hi Marc,

    I don't think TCAN1145-q1 can reset MCU if the watchdog cannot be enabled, does their MCU have a higher level internal watchdog? Upon power on, the SWE timer will start, if the device doesn't change to normal or listen mode after tinactive the transceiver will automatically change to sleep mode and pull INH low so that the power impact of this fault on the system is minimized.

    Regards,

    Sean