Peripheral operating requirements and behaviors
6.2 External oscillator (OSC) and ICS characteristics
Table 10. OSC and ICS specifications (temperature range = -40 to 105 °C ambient)
Num
C
C
C
Characteristic
Low range (RANGE = 0)
Symbol
Min
31.25
4
Typical1
Max
39.0625
20
Unit
kHz
1
Oscillator
crystal or
resonator
flo
fhi
—
—
High range (RANGE = 1)
FEE or FBE mode
MHz
C
C
High range (RANGE = 1),
high gain (HGO = 1),
FBELP mode
fhi
4
4
—
—
20
20
MHz
MHz
High range (RANGE = 1),
low power (HGO = 0),
FBELP mode
fhi
2
3
D
D
Load capacitors
C1, C2
RF
See Note3
—
Feedback
resistor
Low Frequency, Low-Power
Mode
—
—
—
—
—
—
—
—
MΩ
MΩ
MΩ
MΩ
Low Frequency, High-Gain
Mode
10
1
High Frequency, Low-
Power Mode
High Frequency, High-Gain
Mode
1
4
5
D
D
Series resistor -
Low Frequency
Low-Power Mode 4
High-Gain Mode
Low-Power Mode4
RS
RS
—
—
—
—
200
—
—
—
—
kΩ
kΩ
kΩ
Series resistor -
High Frequency
D
D
D
Series resistor -
High
Frequency,
High-Gain Mode
4 MHz
8 MHz
16 MHz
—
—
—
0
0
0
—
—
—
kΩ
kΩ
kΩ
6
C
C
C
C
Crystal start-up
time low range
= 31.25 kHz
crystal; High
range = 20 MHz
crystal, 6
Low range, low power
Low range, high power
High range, low power
High range, high power
tCSTL
—
—
—
—
1000
800
3
—
—
—
—
ms
ms
ms
ms
tCSTH
1.5
7
8
T
D
D
Internal reference start-up time
tIRST
fextal
—
0.03125
0
20
—
—
50
5
µs
Square wave
FEE or FBE mode2
MHz
MHz
input clock
frequency
FBELP mode
20
9
P
Average target internal reference frequency -
trimmed
fint_t
—
31.25
—
kHz
10
11
P
P
C
C
DCO output frequency range - trimmed
fdco_t
16
—
—
—
20
MHz
Total deviation
of DCO output
from trimmed
frequency5
Over full voltage and
temperature range
Δfdco_t
2.0
1.5
1.0
%fdco
Over fixed voltage and
temperature range of 0 to
70 °C
12
C
FLL acquisition time5, 7
tAcquire
—
—
2
ms
Table continues on the next page...
KE02 Sub-Family Data Sheet, Rev3, 07/2013.
Freescale Semiconductor, Inc.
21
FREESCALE [ Freescale ]
