MC9S08QE8_11 Datasheet, PDF (12/52 Pages) Freescale Semiconductor, Inc – Up to 20 MHz CPU at 3.6 V to 1.8 V across temperature range of –40 °C to 85 °C

Electrical Characteristics
Table 7. DC Characteristics (continued)
Num C
Characteristic
Symbol
Condition
Min. Typical¹ Max. Unit
Pullup,
12b C pulldown
R_PU,
(PTA5/IRQ/TCLK/RESET) ^RPD
resistors
—
(Note³)
17.5
—
52.5
k
DC injection
Single pin limit
–0.2
—
13 C current ^{4, 5,} _{Total MCU limit, includes} I_IC V_IN < V_SS, V_IN > V_DD
6
sum of all stressed pins
–5
—
0.2
mA
5
mA
14 C Input capacitance, all pins
C_In
—
—
—
8
pF
15 C RAM retention voltage
16 C POR re-arm voltage⁷
V_RAM
—
V_POR
—
—
0.6
1.0
V
0.9
1.4
2.0
V
17 D POR re-arm time
t_POR
—
10
—
—
s
18 P Low-voltage detection threshold
V_LVD
V_DD falling
V_DD rising
1.80
1.88
1.84
1.92
1.88
1.96
V
19 P Low-voltage warning threshold
V_LVW
V_DD falling
V_DD rising
2.08
2.14
2.24
V
20
P
Low-voltage inhibit reset/recover
hysteresis
V_hys
—
—
80
—
mV
21 P Bandgap voltage reference⁸
V_BG
—
1.15
1.17
1.18
V
1 _{Typical values are measured at 25 C. Characterized, not tested}
2 _{As the supply voltage rises, the LVD circuit will hold the MCU in reset until the supply has risen above VLVDL.}
3 _{The specified resistor value is the actual value internal to the device. The pullup or pulldown value may appear higher when}
measured externally on the pin.
4 _{All functional non-supply pins, except for PTA5 are internally clamped to VSS and VDD.}
5 _{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.
6 _{Power supply must maintain regulation within operating VDD range during instantaneous and operating maximum current}
conditions. If the 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 that 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).
7 _{Maximum is highest voltage that POR is guaranteed.}
8 _{Factory trimmed at VDD = 3.0 V, Temp = 25 C}
MC9S08QE8 Series Data Sheet, Rev. 8
12
Freescale Semiconductor