MC9S08QE8_11 Datasheet, PDF (17/52 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
3.8 External Oscillator (XOSCVLP) Characteristics
Refer to Figure 12 and Figure 13 for crystal or resonator circuits.
Table 10. XOSCVLP Specifications (Temperature Range = –40 to 85C Ambient)
Num C
Characteristic
Symbol Min. Typical¹ Max. Unit
Oscillator crystal or resonator (EREFS = 1, ERCLKEN = 1)
1
C
Low range (RANGE = 0)
High range (RANGE = 1), high gain (HGO = 1), FBELP mode
f_lo
f_hi
32
1
— 38.4 kHz
—
16 MHz
High range (RANGE = 1), low power (HGO = 0), FBELP mode
f_hi
1
—
8 MHz
Load capacitors
2 D Low range (RANGE=0), low power (HGO = 0)
Other oscillator settings
C_1,C₂
See Note ²
See Note ³
Feedback resistor
3D
Low range, low power (RANGE = 0, HGO = 0)²
Low range, high gain (RANGE = 0, HGO = 1)
High range (RANGE = 1, HGO = X)
R_F
—
—
—
10
—
—
M
—
1
—
Series resistor —
Low range, low power (RANGE = 0, HGO = 0)²
Low range, high gain (RANGE = 0, HGO = 1)
4D
High range, low power (RANGE = 1, HGO = 0)
High range, high gain (RANGE = 1, HGO = 1)
 8 MHz
4 MHz
1 MHz
Crystal start-up time⁴
Low range, low power
5 C Low range, high gain
High range, low power
High range, high gain
—
—
R_S
—
—
—
—
t
CSTL
—
—
t
CSTH
—
—
—
—
100
—
0
—
k
0
0
0
10
0
20
600
—
400
5
—
—
ms
15
—
Square wave input clock frequency (EREFS = 0, ERCLKEN = 1)
6 D ^{FEE mode}
FBE or FBELP mode
f_extal 0.03125
—
0
—
20 MHz
20 MHz
1 _{Data in Typical column was characterized at 3.0 V, 25 C or is typical recommended value.}
2 _{Load capacitors (C1,C2), feedback resistor (RF) and series resistor (RS) are incorporated internally when RANGE = HGO = 0.}
3 _{See crystal or resonator manufacturer’s recommendation.}
4 _{Proper PC board layout procedures must be followed to achieve specifications.}
MC9S08QE8 Series Data Sheet, Rev. 8
Freescale Semiconductor
17