Datasheet

Appendix A Electrical Characteristics
MC9S08SG8 MCU Series Data Sheet, Rev. 8
290 Freescale Semiconductor
23 T
Low-voltage inhibit reset/recover
hysteresis
V
hys
5 V — 100 —
mV
xx
3 V — 60 — x x
24 P Bandgap Voltage Reference
13
V
BG
1.18 1.20 1.21 V x
1.17 1.20 1.22 V x
1
Typical values are measured at 25C. Characterized, not tested.
2
Electrical characteristics only apply to the temperature rated devices marked with x.
3
When a pin interrupt is configured to detect rising edges, pulldown resistors are used in place of pullup resistors.
4
The specified resistor value is the actual value internal to the device. The pullup value may measure higher when measured externally on
the pin.
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
The RESET pin does not have a clamp diode to V
DD
. Do not drive this pin above V
DD
.
9
Maximum is highest voltage that POR will occur.
10
Simulated, not tested
11
Device functionality is guaranteed between the LVD threshold VLVD0 and VDD Min.When VDD is below the minimum operating voltage
(VDD Min), the analog parameters for the IO pins, ACMP and ADC, are not guaranteed to meet data sheet performance parameters.
12
In addition to LVD, it is recommended to also use the LVW feature. LVW can trigger an interrupt and be used as an indicator to warn that the
VDD is dropping,so that the software can take actions accordingly before the VDD drops below VDD Min
13
Factory trimmed at V
DD
= 5.0 V
Table A-6. DC Characteristics (continued)
Num C Characteristic Symbol Condition Min Typ
1
Max Unit
Temp Rated
2
Stand
ard
AEC
Grade
0