Datasheet

Appendix A Electrical Characteristics
MC9S08SH32 Series Data Sheet, Rev. 2
288 Freescale Semiconductor
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
Supply voltage V
DD
–0.3 to +5.8 V
Maximum current into V
DD
I
DD
120 mA
Digital input voltage V
In
–0.3 to V
DD
+ 0.3 V
Instantaneous maximum current
Single pin limit (applies to all port pins)
1, 2, 3
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 V
SS
and V
DD
. In
MC9S08SH32, the
RESET pin is named “PTA5/IRQ/TCLK/RESET.”
3
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
Storage temperature range T
stg
–55 to 150 °C
PRELIMINARY