Datasheet

Appendix A Electrical Characteristics and Timing Specifications
MC9S08AC16 Series Data Sheet, Rev. 9
298 Freescale Semiconductor
15 P Low-voltage detection threshold — high range
V
DD
falling
V
DD
rising
V
LVDH
4.2
4.3
4.3
4.4
4.4
4.5
V
16 P
Low-voltage detection threshold — low range
V
DD
falling
V
DD
rising
V
LVDL
2.48
2.54
2.56
2.62
2.64
2.7
V
17 P
Low-voltage warning threshold — high range
V
DD
falling
V
DD
rising
V
LVWH
4.2
4.3
4.3
4.4
4.4
4.5
V
18 P
Low-voltage warning threshold — low range
V
DD
falling
V
DD
rising
V
LVWL
2.48
2.54
2.56
2.62
2.64
2.7
V
19 P
Low-voltage inhibit reset/recover hysteresis
5V
3V
V
hys
—
—
100
35
—
—
mV
20 P Bandgap voltage reference
Factory trimmed at V
DD
= 5.0 V Temp = 25 C
V
BG
1.185 1.202 1.215 V
21 D
DC injection current
5, 6, 7, 8
|I
IC
|
Single pin limit
V
IN
> V
DD
0—2mA
V
IN
< V
SS
0—–0.2mA
Total MCU limit, includes sum of all stressed pins
V
IN
> V
DD
0—25mA
V
IN
< V
SS
0—–5mA
1
Typical values are based on characterization data at 25C unless otherwise stated.
2
Measured with V
In
= V
DD
or V
SS
.
3
Measured with V
In
= V
SS
.
4
Measured with V
In
= V
DD
.
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 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).
6
All functional non-supply pins are internally clamped to V
SS
and V
DD
.
7
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.
8
IRQ does not have a clamp diode to V
DD
. Do not drive IRQ above V
DD
.
Table A-6. DC Characteristics (continued)
Num C Parameter Symbol Min Typ
1
Max Unit