Datasheet
Electrical Characteristics
MC9S08QE32 Series MCU Data Sheet, Rev. 7
Freescale Semiconductor 19
Figure 11. Typical Crystal or Resonator Circuit: High Range and Low Range/High Gain
Figure 12. Typical Crystal or Resonator Circuit: Low Range/Low Power
3.9 Internal Clock Source (ICS) Characteristics
Table 11. ICS Frequency Specifications (Temperature Range = –40 to 85C Ambient)
Num C Characteristic Symbol Min Typical
1
Max Unit
1P
Average internal reference frequency — factory trimmed f
int_t
— 32.768 — kHz
2C
Average internal reference frequency — untrimmed f
int_ut
31.25 — 39.06 kHz
3T
Internal reference start-up time t
IRST
—510s
4
P
DCO output frequency
trimmed
2
Low range (DFR = 00)
f
dco_u
16 — 20
MHzP Mid range (DFR = 01) 32 — 40
P High range (DFR = 10) 48 — 60
5
P
DCO output frequency
2
reference = 32768 Hz
and
DMX32 = 1
Low range (DFR = 00)
f
dco_DMX32
— 19.92 —
MHz
P Mid range (DFR = 01) — 39.85 —
P
High range (DFR = 10)
— 59.77 —
6C
Resolution of trimmed DCO output frequency at fixed voltage
and temperature (using FTRIM)
f
dco_res_t
— 0.1 0.2
%f
dco
7C
Resolution of trimmed DCO output frequency at fixed voltage
and temperature (not using FTRIM)
f
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