Electrical Characteristics
XOSCVLP
EXTAL
XTAL
RS
RF
Crystal or Resonator
C1
C2
Figure 11. Typical Crystal or Resonator Circuit: High Range and Low Range/High Gain
XOSCVLP
EXTAL
XTAL
Crystal or Resonator
Figure 12. Typical Crystal or Resonator Circuit: Low Range/Low Power
3.9
Internal Clock Source (ICS) Characteristics
Table 10. ICS Frequency Specifications (Temperature Range = –40 to 85°C Ambient)
Num
C
Characteristic
Symbol
Min. Typical1 Max.
Unit
Average internal reference frequency — factory trimmed
at VDD = 3.6 V and temperature = 25°C
fint_ft
1
P
—
32.768
—
kHz
Internal reference frequency — user trimmed
Internal reference start-up time
fint_ut
tIRST
fdco_u
2
3
4
P
T
P
31.25
—
—
60
—
39.06
100
60
kHz
μs
DCO output frequency range — trimmed2
48
MHz
DCO output frequency2
Reference = 32768 Hz and DMX32 = 1
fdco_DMX32
Δfdco_res_t
Δfdco_res_t
5
6
7
P
C
C
—
—
—
59.77
± 0.1
± 0.2
—
MHz
%fdco
%fdco
Resolution of trimmed DCO output frequency at fixed voltage and
temperature (using FTRIM)
± 0.2
± 0.4
Resolution of trimmed DCO output frequency at fixed voltage and
temperature (not using FTRIM)
MC9S08QE8 Series, Rev. 3
Freescale Semiconductor
Preliminary
Subject to Change Without Notice
17
FREESCALE [ Freescale ]
