i am working on a prototype with 9S12XEG128 (112 QFP) that wires SCI0 to SCI3 serial ports to the circuit.
I can output serial bytes on TX for SCI0, SCI1 and SCI2. Nothing on SCI3.
From NXP document comparison tables, seems this mcu has only 2 SCI ports, but from my tests i can use 3 of them.
So any clarification is really appreciated.