mc9s08qb8 Freescale Semiconductor, Inc, mc9s08qb8 Datasheet - Page 16

• Manufacturer Part Number: mc9s08qb8
• Description: 8-bit Hcs08 Central Processor Unit
• Manufacturer: Freescale Semiconductor, Inc

1
2
3
4
Electrical Characteristics
3.9
16
Num
Data in Typical column was characterized at 3.0 V, 25 °C or is typical recommended value.
Load capacitors (
See crystal or resonator manufacturer’s recommendation.
Proper PC board layout procedures must be followed to achieve specifications.
1
2
3
4
5
6
7
C
C DCO output frequency range - factory trimmed with DMX32=1
C
C
P
P Internal reference frequency - user trimmed
T Internal reference start-up time
P DCO output frequency range - user trimmed with DMX32=0
Internal Clock Source (ICS) Characteristics
Figure 10. Typical Crystal or Resonator Circuit: High Range and Low Range/High Gain
Average internal reference frequency — factory trimmed
at VDD = 3.6 V and temperature = 25°C
Resolution of trimmed DCO output frequency at fixed voltage and
temperature (using FTRIM)
Resolution of trimmed DCO output frequency at fixed voltage and
temperature (not using FTRIM)
Table 11. ICS Frequency Specifications (Temperature Range = –40 to 85°C Ambient)
C
1,
Figure 11. Typical Crystal or Resonator Circuit: Low Range/Low Power
C
2
), feedback resistor (
Characteristic
C
MC9S08QB8 Series MCU Data Sheet, Rev. 2
1
EXTAL
EXTAL
R
F
) and series resistor (
Crystal or Resonator
Crystal or Resonator
XOSCVLP
XOSCVLP
R
F
R
S
) are incorporated internally when RANGE = HGO = 0.
XTAL
XTAL
Δf
Δf
Symbol
f
dco_res_t
dco_res_t
f
f
t
dco_ut
R
int_ut
f
dco_t
IRST
int_t
S
C
2
31.25
Min
16
—
—
—
—
—
32.768
Freescale Semiconductor
19.92
Typ
±0.1
±0.2
—
—
—
1
39.06
Max
±0.2
±0.4
20
—
—
6
%f
%f
MHz
MHz
Unit
kHz
kHz
μs
dco
dco