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MC9S08SH32CWL Datasheet, PDF (300/328 Pages) Freescale Semiconductor, Inc – MC9S08SH32 Series Features | |||
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Appendix A Electrical Characteristics
A.8 External Oscillator (XOSC) Characteristics
Table A-8. Oscillator Electrical Speciï¬cations (Temperature Range = â40 to 125°C Ambient)
Num C
Rating
Symbol Min
Typ1
Max Unit
Oscillator crystal or resonator (EREFS = 1, ERCLKEN = 1)
1C
Low range (RANGE = 0)
High range (RANGE = 1) FEE or FBE mode 2
flo
32
â
38.4 kHz
fhi
1
â
5
MHz
High range (RANGE = 1, HGO = 1) FBELP mode
fhi-hgo
1
â
16 MHz
High range (RANGE = 1, HGO = 0) FBELP mode
fhi-lp
1
â
8
MHz
2 â Load capacitors
C1, C2
See crystal or resonator
manufacturerâs recommendation.
Feedback resistor
3â
Low range (32 kHz to 100 kHz)
High range (1 MHz to 16 MHz)
RF
â
10
â
MΩ
â
1
â
Series resistor
Low range, low gain (RANGE = 0, HGO = 0)
â
0
â
Low range, high gain (RANGE = 0, HGO = 1)
â
100
â
4â
High range, low gain (RANGE = 1, HGO = 0)
High range, high gain (RANGE = 1, HGO = 1)
â
0
â
RS
kΩ
⥠8 MHz
â
0
0
4 MHz
â
0
10
1 MHz
Crystal start-up time 3
â
0
20
Low range, low gain (RANGE = 0, HGO = 0)
t
CSTL-LP
â
200
â
5T
Low range, high gain (RANGE = 0, HGO = 1)
High range, low gain (RANGE = 1, HGO = 0)4
High range, high gain (RANGE = 1, HGO = 1)4
t
CSTL-HGO
â
400
â
ms
t
CSTH-LP
â
5
â
t
CSTH-HGO
â
20
â
Square wave input clock frequency (EREFS = 0, ERCLKEN = 1)
6T
FEE or FBE mode 2
fextal 0.03125 â
5
MHz
FBELP mode
0
â
40 MHz
1 Typical data was characterized at 5.0 V, 25°C or is recommended value.
2 The input clock source must be divided using RDIV to within the range of 31.25 kHz to 39.0625 kHz.
3 Characterized and not tested on each device. Proper PC board layout procedures must be followed to achieve specifications.
4 4 MHz crystal
EXTAL
MCU
XTAL
RF
RS
C1
Crystal or Resonator
C2
MC9S08SH32 Series Data Sheet, Rev. 2
300
Freescale Semiconductor
PRELIMINARY
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