Datasheet

MC9S08LL64 Series MCU Data Sheet, Rev. 7
Internal Clock Source (ICS) Characteristics
Freescale Semiconductor26
Figure 14. Typical Crystal or Resonator Circuit: High Range and Low Range/High Gain
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 Typ
1
Max Unit
1 C Average internal reference frequency — untrimmed f
int_ut
25 32.7 41.66 kHz
2 P Average internal reference frequency — user-trimmed f
int_t
31.25 — 39.06 kHz
3 P Average internal reference frequency — factory-trimmed f
int_t
—32.7 —kHz
4 T Internal reference start-up time t
IRST
—60100μs
5
P
DCO output frequency
range — untrimmed
Low range (DFR = 00)
f
dco_ut
12.8 16.8 21.33
MHz
C Mid range (DFR = 01) 25.6 33.6 42.67
6
P
DCO output frequency
range — trimmed
Low range (DFR = 00)
f
dco_t
16 — 20
MHz
P Mid range (DFR = 01) 32 — 40
7C
Resolution of trimmed DCO output frequency at fixed
voltage and temperature (using FTRIM)
Δf
dco_res_t
— ±0.1 ±0.2 %f
dco
8C
Resolution of trimmed DCO output frequency at fixed
voltage and temperature (not using FTRIM)
Δf
dco_res_t
— ± 0.2 ±0.4 %f
dco
XOSCVLP
EXTAL XTAL
Crystal or Resonator
R
S
C
2
R
F
C
1
XOSCVLP
EXTAL XTAL
Crystal or Resonator