mcf51jm128 Freescale Semiconductor, Inc, mcf51jm128 Datasheet - Page 29

• Manufacturer Part Number: mcf51jm128
• Description: Mcf51jm128 Coldfire Microcontroller Flexis 32-bit V1 Coldfire? Usb Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

1
2
3
4
5
5
Num C
2.9
Freescale Semiconductor
Data in Typical column was characterized at 3.0 V, 25°C or is typical recommended value.
When MCG is configured for FEE or FBE mode, input clock source must be divisible using RDIV to within the range of 31.25
kHz to 39.0625 kHz.
When MCG is configured for PEE or PBE mode, input clock source must be divisible using RDIV to within the range of 1 MHz
to 2MHz.
This parameter is characterized and not tested on each device.
Proper PC board layout procedures must be followed to achieve specifications.
4 MHz crystal
1
2
3
4
5
6
Table 15. Oscillator Electrical Specifications (Temperature Range = –40 to 105°C Ambient)
Oscillator crystal or resonator (EREFS = 1, ERCLKEN = 1)
Load capacitors
Feedback resistor
Series resistor
Crystal start-up time
Square wave input clock frequency (EREFS = 0, ERCLKEN = 1)
External Oscillator (XOSC) Characteristics
Low range (32 kHz to 38.4 kHz)
High range (1 MHz to 16 MHz)
Low range
High range
FEE or FBE mode
BLPE mode
Low range (RANGE = 0)
High range (RANGE = 1) FEE or FBE mode
High range (RANGE = 1) PEE or PBE mode
High range (RANGE = 1, HGO = 1) BLPE mode
High range (RANGE = 1, HGO = 0) BLPE mode
Low range (HGO = 0)
Low range (HGO = 1)
High range (HG0 = 0)
High range (HG0 = 1)
Low Gain (HGO = 0)
High Gain (HGO = 1)
Low Gain (HGO = 0)
High Gain (HGO = 1)
≥ 8 MHz
4 MHz
1 MHz
2
4, 5
5
5
MCF51JM128 ColdFire Microcontroller, Rev. 0
Rating
2
3
t
t
CSTH-HGO
CSTL-HGO
Symbol
t
t
CSTH-LP
CSTL-LP
f
f
hi-hgo
f
f
f
hi-pll
extal
R
hi-fll
hi-lp
C
C
R
f
lo
S
1
2
F
Preliminary Electrical Characteristics
0.03125
manufacturer’s recommendation.
Min
32
—
—
—
—
—
—
—
—
—
—
1
1
1
1
0
See crystal or resonator
Typ
TBD
100
200
400
10
—
—
—
—
—
—
—
1
0
0
0
0
0
5
1
Max
38.4
16
16
10
20
40
—
—
—
—
—
—
—
5
8
0
5
MHz
MHz
MHz
MHz
MHz
MHz
Unit
kHz
MΩ
MΩ
ms
kΩ
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