S912XEG384J3VA Datasheet, PDF (1203/1324 Pages) Freescale Semiconductor, Inc – MC9S12XEP100 Reference Manual Covers MC9S12XE Family

Appendix A Electrical Characteristics
A.1.3.3 Oscillator
The pins EXTAL, XTAL dedicated to the oscillator have a nominal 1.8 V level. They are supplied by
VDDPLL.
A.1.3.4 TEST
This pin is used for production testing only.
A.1.4 Current Injection
Power supply must maintain regulation within operating V_DD35 or V_DD range during instantaneous and
operating maximum current conditions. If positive injection current (V_in > V_DD35) is greater than I_DD35,
the injection current may flow out of V_DD35 and could result in external power supply going out of
regulation. Ensure external V_DD35 load will shunt current greater than maximum injection current. This
will be the greatest risk when the MCU is not consuming power; e.g., if no system clock is present, or if
clock rate is very low which would reduce overall power consumption.
A.1.5 Absolute Maximum Ratings
Absolute maximum ratings are stress ratings only. A functional operation under or outside those maxima
is not guaranteed. Stress beyond those limits may affect the reliability or cause permanent damage of the
device.
This device contains circuitry protecting against damage due to high static voltage or electrical fields;
however, it is advised that normal precautions be taken to avoid application of any voltages higher than
Freescale Semiconductor
MC9S12XE-Family Reference Manual Rev. 1.25
1203