Appendix A Electrical Characteristics
MC9S12XDP512 Data Sheet, Rev. 2.11
Freescale Semiconductor 921

the injection current may flow out of VDD35 and could result in external power supply going out of

regulation. Ensure external VDD35 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

maximum-rated voltages to this high-impedance circuit. Reliability of operation is enhanced if unused

inputs are tied to an appropriate logic voltage level (e.g., either VSS35 or VDD35).

Table A-1. Absolute Maximum Ratings1
1Beyond absolute maximum ratings device might be damaged.
Num Rating Symbol Min Max Unit
1 I/O, regulator and analog supply voltage VDD35 –0.3 6.0 V
2 Digital logic supply voltage2
2The device contains an internal voltage regulator to generate the logic and PLL supply out of the I/O supply. The absolute
maximum ratings apply when the device is powered from an external source.
VDD –0.3 3.0 V
3 PLL supply voltage2VDDPLL –0.3 3.0 V
4 Voltage difference VDDX to VDDR and VDDA VDDX –0.3 0.3 V
5 Voltage difference VSSX to VSSR and VSSA VSSX –0.3 0.3 V
6 Digital I/O input voltage VIN –0.3 6.0 V
7 Analog reference VRH, VRL –0.3 6.0 V
8 XFC, EXTAL, XTAL inputs VILV –0.3 3.0 V
9 TEST input VTEST –0.3 10.0 V
10 Instantaneous maximum current
Single pin limit for all digital I/O pins3
3All digital I/O pins are internally clamped to VSSX and VDDX, VSSR and VDDR or VSSA and VDDA.
ID–25 +25 mA
11 Instantaneous maximum current
Single pin limit for XFC, EXTAL, XTAL4
4Those pins are internally clamped to VSSPLL and VDDPLL.
IDL –25 +25 mA
12 Instantaneous maximum current
Single pin limit for TEST 5
5This pin is clamped low to VSSPLL, but not clamped high. This pin must be tied low in applications.
IDT –0.25 0 mA
13 Storage temperature range Tstg –65 155 °C