Other Parts Discussed in Thread: ISO1042
My customer is having the following glitch on the power up and this is throwing other nodes on the bus into trouble:
This is happening on power up of the inverter (around 30ms from power ON) and before the MCU starts initializing the IO’s.
They have separated the MCU from the transceiver to remove MCU/SW errors from the equation.
They have also pulled up the Tx of the transceiver with a 10K resistor, but the spike above remained the same.
The following is the snap of the transceiver HW configuration on our inverter:
Any ideas what this could be?