MC9S08AC16_0911 Datasheet, PDF (298/336 Pages) Freescale Semiconductor, Inc – HCS08 Microcontrollers

Appendix A Electrical Characteristics and Timing Specifications
Table A-6. DC Characteristics (continued)
Num C
Parameter
Symbol Min
Typ¹
Max Unit
15 P Low-voltage detection threshold — high range
V_DD falling V_LVDH
4.2
4.3
4.4
V
V_DD rising
4.3
4.4
4.5
Low-voltage detection threshold — low range
16 P
V_DD falling V_LVDL
2.48
2.56
2.64
V
V_DD rising
2.54
2.62
2.7
Low-voltage warning threshold — high range
17 P
V_DD falling V_LVWH
4.2
4.3
4.4
V
V_DD rising
4.3
4.4
4.5
Low-voltage warning threshold — low range
18 P
V_DD falling V_LVWL
2.48
2.56
2.64
V
V_DD rising
2.54
2.62
2.7
Low-voltage inhibit reset/recover hysteresis
19 P
5V V_hys
3V
—
100
—
mV
—
35
—
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
DC injection current^{5, 6, 7, 8}
Single pin limit
V_IN > V_DD
0
—
2
mA
21 D
V_IN < V_SS
|I_IC|
0
—
–0.2
mA
Total MCU limit, includes sum of all stressed pins
V_IN > V_DD
0
—
25
mA
V_IN < V_SS
0
—
–5
mA
1 _{Typical values are based on characterization data at 25°C unless otherwise stated.}
2 _{Measured with VIn = VDD or VSS.}
3 _{Measured with VIn = VSS.}
4 _{Measured with VIn = VDD.}
5 _{Power supply must maintain regulation within operating VDD 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 VSS and VDD.}
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 VDD. Do not drive IRQ above VDD.}
MC9S08AC16 Series Data Sheet, Rev. 8
298
Freescale Semiconductor