FET level compatibility

The TI MSP team cannot provide any information on how to intentionally destroy a MSP device beyond repair, be it the ADC peripheral, power module, flash memory contents, or otherwise. Methods are provided to lock the device from being reprogrammed/flashed.

Regards,
Ryan

Richard,


I would say that most of the engineers that watch over the forum are good at getting a circuit to work, not at getting the circuit to not work ever again. To be honest, I'm not sure enough to say of there's a guaranteed way to assure that the circuit is completely destroyed.

Most pins have some sort of ESD protection that connect the pin to a supply and/or ground through a reverse-biased diode. This is meant to shunt the current to a supply pin in an ESD event without damaging the device. However the over voltage from a supply is likely much more destructive because of the amount of charge that it can deliver for a much longer duration.

Again, I don't think there are any proven methods to do this. I'm sure no one here has repeatedly tested this. However I would guess that the best bet would be to take the supplies from the operating voltage of 5V or 3.3V to your available 30V (making sure that the supply could deliver any sizable current). That would probably destroy the device. I would also consider doing this to the output of the device (like DOUT for an ADC). Even if the digital section survived, You might be able to prevent it from communicating again.


Joseph Wu