I am use FRDM-KEAZ128Q80 as OpenOCD debugger, and it works well on a S9KEAZ128AMLH chip. but when I try to debug a S9KEAZN8AMFK mcu ,It doesn't work. It can't reconize the mcu.
I have connected the Exposed Pad to the ground, I searched the <KEA8 Sub-Family Reference Manual> but I don't found how to deal with the Exposed Pad.
My schematic has been attached. *Note that I have been conncted the Exposed Pad to the ground.
I tested the pin PTA5/RESET voltage is 2.8v , it is very strange. help me please .