Datasheet

Electrical Characteristics
MC9S08FL16 Series Data Sheet, Rev. 3
Freescale Semiconductor 19
5.8 External Oscillator (XOSC) and ICS Characteristics
Refer to Figure 11 for crystal or resonator circuits.
Table 9. XOSC and ICS Specifications (Temperature Range = –40 to 85 C Ambient)
Num C Characteristic Symbol Min Typical
1
Max Unit
1C
Oscillator crystal or resonator (EREFS = 1, ERCLKEN = 1)
Low range (RANGE = 0)
High range (RANGE = 1) FEE or FBE mode
2
High range (RANGE = 1), high gain (HGO = 1), FBELP
mode
High range (RANGE = 1), low power (HGO = 0), FBELP
mode
f
lo
f
hi
f
hi
f
hi
32
1
1
1
—
—
—
—
38.4
5
16
8
kHz
MHz
MHz
MHz
2 D Load capacitors
C
1
C
2
See Note
3
3D
Feedback resistor
Low range (32 kHz to 38.4 kHz)
High range (1 MHz to 16 MHz)
R
F
10
1
M
M
4D
Series resistor — Low range
Low gain (HGO = 0)
High gain (HGO = 1)
R
S
—
—
0
100
—
—
k
5D
Series resistor — High range
Low Gain (HGO = 0)
High Gain (HGO = 1)
 8 MHz
4 MHz
1 MHz
R
S
—
—
—
0
0
0
0
10
20
k
6C
Crystal startup time
4, 5
Low range, low power
Low range, high power
High range, low power
High range, high power
t
CSTL
t
CSTH
—
—
—
—
200
400
5
15
—
—
—
—
ms
7 T Internal reference start-up time
t
IRST
— 60 100 s
8D
Square wave input clock frequency (EREFS = 0, ERCLKEN
= 1)
FEE or FBE mode
2
FBELP mode
f
extal
0.03125
0
—
—
5
20
MHz
MHz
9 P Average internal reference frequency — trimmed
f
int_t
— 31.25 — kHz
10 P
DCO output frequency range — trimmed
6
Low range (DRS = 00)
f
dco_t
16 — 20 MHz
11 C
Total deviation of DCO output from trimmed frequency
4
Over full voltage and temperature range
Over fixed voltage and temperature range of 0 to 70C
f
dco_t
— –1.0 to 0.5
0.5
2
1
%f
dco
12 C
FLL acquisition time
4,7
t
Acquire
1ms