Hi Team,
In my customer's system, they observed a negative -200-300mV voltage spike on the ADCIN pin (122 and 138). The spike is caused by external power supply rather than MCU. And the spike occurs before the 3.3V power of MCU is established.
Since the ADC input range of C2000 is 0-3.3V, they are worried about whether this negative spike will damage the MCU. I believe this is a universal question of all the other pins on C2000 mcus. Will these negative voltage spikes during power up harm our MCU?
Thanks.