MC9S08QE8 Datasheet, PDF (16/46 Pages) Freescale Semiconductor, Inc – 8-Bit HCS08 Central Processor Unit

Electrical Characteristics
3.8 External Oscillator (XOSCVLP) Characteristics
Refer to Figure 11 and Figure 12 for crystal or resonator circuits.
Table 9. XOSCVLP and ICS 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)
High range (RANGE = 1), low power (HGO = 0)
f_lo
32
— 38.4 kHz
f_hi
1
—
16 MHz
f_hi
1
—
8 MHz
Load capacitors
2 D Low range (RANGE=0), low power (HGO=0)
Other oscillator settings
C_1,C₂
See Note²
See Note³
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
—
—
MΩ
—
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 time ⁴
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
—
kΩ
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, Rev. 3
16
Preliminary
Freescale Semiconductor
Subject to Change Without Notice