mc9s08qb8 Freescale Semiconductor, Inc, mc9s08qb8 Datasheet - Page 17

• Manufacturer Part Number: mc9s08qb8
• Description: 8-bit Hcs08 Central Processor Unit
• Manufacturer: Freescale Semiconductor, Inc

3.10
This section describes timing characteristics for each peripheral system.
Freescale Semiconductor
1
2
3
Num
10
11
8
9
Data in Typical column was characterized at 3.0 V, 25 °C or is typical recommended value.
This specification applies to any time the FLL reference source or reference divider is changed, trim value 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
for a given interval.
Table 11. ICS Frequency Specifications (Temperature Range = –40 to 85°C Ambient) (continued)
C
C
C
C FLL acquisition time
C
AC Characteristics
Total deviation of trimmed DCO output frequency over voltage
and temperature range of –40 to 85
Total deviation of trimmed DCO output frequency over fixed
voltage and temperature range of 0 to 70
Long term jitter of DCO output clock (averaged over 2-ms interval)
3
2
DD
Characteristic
MC9S08QB8 Series MCU Data Sheet, Rev. 2
and V
SS
°
and variation in the crystal oscillator frequency increase the C
C
°
C
Symbol
t
Δf
Δf
Acquire
C
dco_t
dco_t
Jitter
Min
—
—
—
—
Electrical Characteristics
Typ
±0.5
0.02
±1
—
1
Jitter
Max
0.2
±2
±1
1
percentage
Bus
.
%f
%f
%f
Unit
ms
dco
dco
dco
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