mc9s08qd4 Freescale Semiconductor, Inc, mc9s08qd4 Datasheet - Page 186

• Manufacturer Part Number: mc9s08qd4
• Description: Hcs08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Appendix A Electrical Characteristics
A.7
1
2
3
4
186
Average internal reference frequency - untrimmed
Average internal reference frequency - trimmed
DCO output frequency range - untrimmed
DCO output frequency range - trimmed
Resolution of trimmed DCO output frequency at fixed voltage and
temperature (Consumer and Industrial MC9S08QDx)
Resolution of trimmed DCO output frequency at fixed voltage and
temperature (Automotive S9S08QDx)
Total deviation of trimmed DCO output frequency over voltage and
temperature
FLL acquisition time
Long term Jitter of DCO output clock (averaged over 2 ms interval)
Data in Typical column was characterized at 3.0 V and 3.0 V, 25°C or is typical recommended value.
Characterized, but not tested.
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
a given interval.
Internal Clock Source Characteristics
2
2,3
Characteristic
Consumer and Industrial MC9S08QDx
Table A-7. Internal Clock Source Specifications
DD
2
MC9S08QD4 Series MCU Data Sheet, Rev. 3
and V
SS
Automotive S9S08QDx
and variation in crystal oscillator frequency increase the C
2
–40°C to 0°C
0 to 125°C
4
Δf
Symbol
t
Δf
f
dco_res_t
acquire
C
f
f
dco_ut
int_ut
f
dco_t
int_t
dco_t
Jitter
12.8
Min
25
—
—
—
—
—
—
31.25
31.25
Typ
16
16
—
—
—
—
Freescale Semiconductor
1
Jitter
41.66
21.33
± 0.2
± 0.3
± 0.2
Max
± 2
± 3
0.6
—
—
1
percentage for
BUS
%f
%f
%f
.
MHz
MHz
Unit
kHz
kHz
ms
dco
dco
dco