Datasheet

Appendix A Electrical Characteristics
MC9S08JM60 Series Data Sheet, Rev. 3
362 Freescale Semiconductor
A.10 External Oscillator (XOSC) Characteristics
Table A-11. Oscillator Electrical Specifications (Temperature Range = –40 to 85°C Ambient)
Num C Rating Symbol Min Typ
1
1
Typical data was characterized at 3.0 V, 25°C or is recommended value.
Max Unit
1C
Oscillator crystal or resonator (EREFS = 1, ERCLKEN = 1)
Low range (RANGE = 0)
High range (RANGE = 1) FEE or FBE mode
2
High range (RANGE = 1) PEE or PBE mode
3
High range (RANGE = 1, HGO = 1) BLPE mode
High range (RANGE = 1, HGO = 0) BLPE mode
2
When MCG is configured for FEE or FBE mode, input clock source must be divided using RDIV to within the range of 31.25 kHz
to 39.0625 kHz.
3
When MCG is configured for PEE or PBE mode, input clock source must be divided using RDIV to within the range of 1 MHz to
2 MHz.
f
lo
f
hi-fll
f
hi-pll
f
hi-hgo
f
hi-lp
32
1
1
1
1
—
—
—
—
—
38.4
5
16
16
8
kHz
MHz
MHz
MHz
MHz
2 — Load capacitors C
1,
C
2
See crystal or resonator
manufacturer’s recommendation.
3—
Feedback resistor
Low range (32 kHz to 38.4 kHz)
High range (1 MHz to 16 MHz)
R
F
10
1
MΩ
MΩ
4—
Series resistor
Low range, low gain (RANGE = 0, HGO = 0)
Low range, high gain (RANGE = 0, HGO = 1)
High range, low gain (RANGE = 1, HGO = 0)
High range, high gain (RANGE = 1, HGO = 1)
≥ 8 MHz
4 MHz
1 MHz
R
S
—
—
—
—
—
—
0
100
0
0
0
0
—
—
—
0
10
20
kΩ
5T
Crystal start-up time
4
Low range, low gain (RANGE = 0, HGO = 0)
Low range, high gain (RANGE = 0, HGO = 1)
High range, low gain (RANGE = 1, HGO = 0)
5
High range, high gain (RANGE = 1, HGO = 1)
5
4
This parameter is characterized and not tested on each device. Proper PC board layout procedures must be followed to achieve
specifications.
5
4 MHz crystal
t
CSTL-LP
t
CSTL-HGO
t
CSTH-LP
t
CSTH-HGO
—
—
—
—
200
400
5
15
—
—
—
—
ms
6T
Square wave input clock frequency (EREFS = 0, ERCLKEN = 1)
FEE or FBE mode
2
PEE or PBE mode
3
BLPE mode
f
extal
0.03125
1
0
—
—
—
5
16
40
MHz
MHz
MHz
MCU
EXTAL XTAL
Crystal or Resonator
R
S
C
2
R
F
C
1