MC9S08SG32 Datasheet, PDF (290/328 Pages) Freescale Semiconductor, Inc – HCS08 Microcontrollers

Appendix A Electrical Characteristics
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
Temp Rated
#
Rating
Symbol
Value
Unit
1 ^{Supply voltage}
V_DD
–0.3 to +5.8
V
♦
♦
2 ^{Maximum current into V}DD
I_DD
120
mA
♦
♦
3 ^{Digital input voltage}
V_In
–0.3 to V_DD + 0.3 V
♦
♦
4
Instantaneous maximum current
Single pin limit (applies to all port pins)^{1, 2, 3}
I_D
± 25
mA
♦
♦
5 ^{Storage temperature range}
T_stg
–55 to 150
°C
♦
♦
1 _{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.
2 _{All functional non-supply pins except RESET are internally clamped to VSS and VDD.}
3 _{Power supply must maintain regulation within operating VDD 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).
MC9S08SG32 Data Sheet, Rev. 7
290
Freescale Semiconductor