Datasheet

MC9S08SE8 Series MCU Data Sheet, Rev. 3
Electrical Characteristics
Freescale Semiconductor20
Figure 15. Typical Crystal or Resonator Circuit: High Range and Low Range/High Gain
Figure 16. Typical Crystal or Resonator Circuit: Low Range/Low Power
3.8 Internal Clock Source (ICS) Characteristics
Table 10. ICS Frequency Specifications (Temperature Range = –40 to 85°C Ambient)
Num C Characteristic Symbol Min. Typical
1
Max. Unit
1P
Average internal reference frequency — factory trimmed
at V
DD
= 5 V and temperature = 25 °C
f
int_t
— 39.0625 — kHz
2P
Internal reference frequency — user trimmed f
int_ut
31.25 — 39.06 kHz
3T
Internal reference start-up time t
IRST
— 60 100 μs
4D
DCO output frequency range —
trimmed
2
Low range
(DRS = 00)
f
dco_t
16 — 20 MHz
5D
DCO output frequency
2
Reference = 32768 Hz and DMX32 = 1
f
dco_DMX32
— 59.77 — MHz
6C
Resolution of trimmed DCO output frequency at fixed
voltage and temperature (using FTRIM)
Δf
dco_res_t
— ±0.1 ±0.2
%f
dco
XOSCVLP
EXTAL XTAL
Crystal or Resonator
R
S
C
2
R
F
C
1
XOSCVLP
EXTAL XTAL
Crystal or Resonator