MC9S08LH64 Datasheet, PDF (26/44 Pages) Freescale Semiconductor, Inc – Advanced Information

Internal Clock Source (ICS) Characteristics
EXTAL
XOSCVLP
R_F
XTAL
R_S
Crystal or Resonator
C₁
C₂
Figure 14. Typical Crystal or Resonator Circuit: High Range and Low Range/High Gain
EXTAL
XOSCVLP
XTAL
Crystal or Resonator
Figure 15. Typical Crystal or Resonator Circuit: Low Range/Low Power
3.9 Internal Clock Source (ICS) Characteristics
Table 12. ICS Frequency Specifications (Temperature Range = –40 to 85 °C Ambient)
Num C
Characteristic
Symbol Min
Typ¹
Max Unit
1 C Average internal reference frequency — untrimmed
2 P Average internal reference frequency — user-trimmed
3 P Average internal reference frequency — factory-trimmed
4 T Internal reference start-up time
5
P _{DCO output frequency}
C ^{range — untrimmed}
Low range (DFR = 00)
Mid range (DFR = 01)
f_{int_ut}
f_{int_t}
f_{int_t}
t_IRST
f_{dco_ut}
25
31.25
—
—
12.8
25.6
32.7
—
32.7
60
16.8
33.6
6
P _{DCO output frequency}
P ^{range — trimmed}
Low range (DFR = 00)
Mid range (DFR = 01)
16
—
f_{dco_t}
32
—
7
C
Resolution of trimmed DCO output frequency at fixed
voltage and temperature (using FTRIM)
Δf_{dco_res_t} —
±0.1
8
C
Resolution of trimmed DCO output frequency at fixed
voltage and temperature (not using FTRIM)
Δf_{dco_res_t} —
±0.2
41.66
39.06
—
100
21.33
42.67
20
40
kHz
kHz
kHz
μs
MHz
MHz
±0.2 %f_dco
±0.4 %f_dco
MC9S08LH64 Series MCU Data Sheet, Rev. 4
26
PRELIMINARY-SUBJECT TO CHANGE WITHOUT NOTICE
Freescale Semiconductor