Part Number:HEATEVM
I have a HEAT board that I am trying to communicate with using a J-Link Pro. The J-Link indicates the Reset pin is low and this prevents me from connecting to the MCU (U19, SM470R1B1M). I confirmed this by checking voltage on U19-69 RSTn, JP20-15, R81, and U18-3. All have nearly zero voltage. Unsoldering pin U19-69 makes JP20-15, R81, and U18-3 3.23V. It appears that U19 is pulling pin 69 low. Is there a way to reset this pin so it doesn't pull RSTn low or erase the program that might be driving this pin?