Datasheet

MC9S08SF4 Series MCU Data Sheet, Rev. 4
DC Characteristics
Freescale Semiconductor10
Figure 4. Typical Low-Side Driver (Sink) Characteristics
Low Drive (PTxDSn = 0), V
DD
= 5.0 V, V
OL
vs. I
OL
1
Maximum leakage current occurs at a maximum operating temperature. The current decreases by approximately one-half for
each 8 C to 12 C in the temperature range from 50 C to 125 C.
2
Measurement condition for pull resistors: V
In
= V
SS
for pullup and V
In
= V
DD
for pulldown.
3
All functional non-supply pins are internally clamped to V
SS
and V
DD
.
4
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.
5
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 shunts current greater than maximum injection
current. This is 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 reduces overall power consumption).
Typical Low-Side Driver (LDS) Characteristics
V
DD
= 5 V, PORTA, V
OL
Vs I
OL
0
1
2
3
4
5
6
1234567891011121314
I
OL
(mA)
V
OL
(V)
T=-40C
T=0C
T=25C
T=85C
T=105C
T=125C