mc9s08mm128 Freescale Semiconductor, Inc, mc9s08mm128 Datasheet - Page 33

• Manufacturer Part Number: mc9s08mm128
• Description: S08mm Flexis
• Manufacturer: Freescale Semiconductor, Inc

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Freescale Semiconductor
This specification applies to any time the PLL VCO divider or reference divider is changed, or changing from PLL
disabled (BLPE, BLPI) to PLL enabled (PBE, PEE). If a crystal/resonator is being used as the reference, this
specification assumes it is already running.
Jitter is the average deviation from the programmed frequency measured over the specified interval at maximum f
Measurements are made with the device powered by filtered supplies and clocked by a stable external clock signal.
Noise injected into the FLL circuitry via V
percentage for a given interval.
625 ns represents 5 time quanta for CAN applications, under worst-case conditions of 8 MHz CAN bus clock, 1 Mbps
CAN Bus speed, and 8 time quanta per bit for bit time settings. 5 time quanta is the minimum time between a
synchronization edge and the sample point of a bit using 8 time quanta per bit.
Below D
if the MCG is already in lock, then the MCG may stay in lock.
Below D
lock.
#
1
2
3
4
5
Oscillator crystal or resonator
(EREFS = 1, ERCLKEN = 1)
Load capacitors
Feedback resistor
Series resistor — Low range
Series resistor — High range
unl
lock
minimum, the MCG will not exit lock if already in lock. Above D
minimum, the MCG is guaranteed to enter lock. Above D
Table 18. XOSC (Temperature Range = –40 to 105
Characteristic
Low range
(32 kHz to 38.4 kHz)
High range
(1 MHz to 16 MHz)
Low Gain (HGO = 0)
High Gain (HGO = 1)
• Low range (RANGE = 0)
• High range (RANGE = 1),
• FEE or FBE mode
• High range (RANGE = 1),
• High gain (HGO = 1),
• FBELP mode
• High range (RANGE = 1),
• Low power (HGO = 0),
• FBELP mode
• Low Gain (HGO = 0)
• High Gain (HGO = 1)
DD
and V
SS
≥ 8 MHz
4 MHz
1 MHz
and variation in crystal oscillator frequency increase the C
2
lock
unl
maximum, the MCG will not enter lock. But
Symbol
maximum, the MCG is guaranteed to exit
R
R
C
C
R
fhi
fhi
fhi
—
f
lo
S
S
1
2
F
°
C Ambient)
Preliminary Electrical Characteristics
Min
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—
—
—
—
—
—
—
1
1
1
Typ
100
10
—
—
—
—
See Note
1
0
0
0
0
1
3
Max
38.4
16
10
20
—
—
—
—
5
8
0
BUS
Jitter
.
MHz
MHz
MHz
Unit
kHz
MΩ
kΩ
kΩ
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