Solved! Go to Solution.
As I said before, I'm working with the AN3034 example, and actually I have the MC9S12DG128B, but the pins 70,71,74 and 75 are busy and only the 72 and 73 pins are free. when I burned the s19 in the MCU, this was hot. I thing may be some pins (70,71,74 and 75) are the warming cause.
I want to know, how the pins should be configured in order to work with the 72 and 73 pins.
also, I was working with the Processor Expert and I have configurated the 72 y 73 pins, but I dont see any change in the code.
MODRR register is used to change MSCAN pin routing. Please check the PIM block guide.
Does you chip gets hot also while in reset state? Try putting jumper to BDM connector between pins 2(gnd) and 4(/RESET). If it still gets hot, then make sure you didn't connect by mistake voltage regulator output to 5V. VDD1, VDD2 and VDDPLL should be NOT connected to 5V, they should connect to bypass capacitors only.