Datasheet

Appendix A Electrical Characteristics
MC9S08SG8 MCU Series Data Sheet, Rev. 8
284 Freescale Semiconductor
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 (for instance, either V
SS
or V
DD
) or the programmable
pull-up resistor associated with the pin is enabled.
Table A-2. Absolute Maximum Ratings
Rating Symbol Value Unit
Temp Rated
1
1
Electrical characteristics only apply to the temperature rated devices marked with x.
Standard
AEC
Grade 0
Supply voltage V
DD
–0.3 to +5.8 V x x
Maximum current into V
DD
I
DD
120 mA x x
Digital input voltage V
In
–0.3 to V
DD
+ 0.3 V x x
Instantaneous maximum current 
Single pin limit (applies to all port pins)
2, 3, 4
2
Input must be current limited to the value specified. To determine the value of the required current-limiting resistor, calculate
resistance values for positive (V
DD
) and negative (V
SS
) clamp voltages, then use the larger of the two resistance values.
3
All functional non-supply pins are internally clamped to V
SS
and V
DD
.
4
Power supply must maintain regulation within operating V
DD
range during instantaneous and operating maximum current
conditions. If positive injection current (V
In
> V
DD
) is greater than I
DD
, the injection current may flow out of V
DD
and could result
in external power supply going out of regulation. Ensure external V
DD
load will shunt current greater than maximum injection
current. This will be the greatest risk when the MCU is not consuming power. Examples are: if no system clock is present, or
if the clock rate is very low (which would reduce overall power consumption).
I
D
 25 mA x x
Storage temperature range T
stg
–55 to 150 Cx x