mc9s08sf4 Freescale Semiconductor, Inc, mc9s08sf4 Datasheet - Page 17

• Manufacturer Part Number: mc9s08sf4
• Description: Mc9s08sf4 Series Freescale Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

3.9
This section describes AC timing characteristics for each peripheral system.
Freescale Semiconductor
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2
3
4
Data in Typical column was characterized at 5.0 V, 25 °C or is typical recommended value.
This parameter is characterized and not tested on each device.
This specification applies to any time the FLL reference source or reference divider is changed, trim value changed,
DMX32 bit is changed, DRS bit is changed, or changing from FLL disabled (FBELP, FBILP) to FLL enabled (FEI,
FEE, FBE, FBI). 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.
AC Characteristics
Figure 13. Deviation of DCO Output from Trimmed Frequency (20 MHz, 5.0 V)
-60
-40
-20
MC9S08SF4 Series MCU Data Sheet, Rev. 2
-0.50%
-1.00%
-1.50%
-2.00%
1.00%
0.50%
0.00%
DD
0
and V
SS
Temperature
20
TBD
and variation in crystal oscillator frequency increase the C
40
60
80
100
AC Characteristics
120
Jitter
Bus
.
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