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MC9S08LL8CLF Datasheet, PDF (27/44 Pages) Freescale Semiconductor, Inc – MC9S08LL16 Series | |||
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3.8 External Oscillator (XOSCVLP) Characteristics
Refer to Figure 14 and Figure 15 for crystal or resonator circuits.
Electrical Characteristics
Table 11. XOSCVLP and ICS Specifications (Temperature Range = â40 to 85 °C Ambient)
Num C
Characteristic
Symbol Min
Typ1 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)
Load capacitors
2
D
Low range (RANGE=0), low power (HGO=0)
Other oscillator settings
flo
32
â
38.4 kHz
fhi
1
â
16 MHz
fhi
1
â
8
MHz
C1,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)
RF
â
â
â
10
â
â
MΩ
â
1
â
Series resistor â
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
â
â
â
â
100
â
RS
â
0
â
kΩ
â
0
0
â
0
10
â
0
20
t
â
600
â
CSTL
t
â
â
400
5
â
â
ms
CSTH
â
15
â
Square wave input clock frequency (EREFS = 0, ERCLKEN = 1)
6 D FEE mode
FBE or FBELP mode
fextal 0.03125 â
0
â
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 manufacturerâs recommendation.
4 Proper PC board layout procedures must be followed to achieve specifications.
MC9S08LL16 Series MCU Data Sheet, Rev. 7
Freescale Semiconductor
27
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