Datasheet

Appendix A Electrical Characteristics
MC9S08SG32 Data Sheet, Rev. 8
Freescale Semiconductor 299
Figure A-1. Typical V
OL
vs I
OL
, High Drive Strength
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 clock rate is very low (which would reduce overall power consumption).
5
All functional non-supply pins except RESET are internally clamped to V
SS
and V
DD
.
6
Input must be current limited to the value specified. To determine the value of the required current-limiting resistor, calculate
resistance values for positive and negative clamp voltages, then use the larger of the two values.
7
The RESET pin does not have a clamp diode to V
DD
. Do not drive this pin above V
DD
.
8
Maximum is highest voltage that POR is guaranteed.
9
Simulated, not tested.
10
Factory trimmed at V
DD
= 5.0 V, Temp = 25°C.
V
OL
(V)
I
OL
(mA)
2015105025
0
0.5
1
1.5
2
a) V
DD
= 5V, High Drive
V
OL
(V)
I
OL
(mA)
8642010
0
0.2
0.4
0.8
1.0
b) V
DD
= 3V, High Drive
0.6
150˚C
25˚C
–40˚C
Max 0.8V@5mA
Max 1.5V@20mA
150˚C
25˚C
–40˚C