What is the temperature sensing slope on the S12ZVL? I am reading 110 (10-bit, right just) at room temperature (20C). It doesn't seem to be right.
the slope is dVHT = 5.05 mV/°C (typical). See S12ZVL RM and table A-17. Voltage Regulator Electrical Characteristics
MC9S12ZVL Family Reference Manual & Datasheet
The reading you get may not be accurate since the trimming and calibration process is necessary. Please check the following application note:
S12X Temperature Sensor: Considerations for Using the S12X Temperature Senso ...
The temp sensor principle is the same as on MagniV devices.
Retrieving data ...