Datasheet

Relaxation Oscillator Timing
56F8014 Technical Data, Rev. 11
Freescale Semiconductor 101
10.7 Relaxation Oscillator Timing
Figure 10-5 Relaxation Oscillator Temperature Variation (Typical) After Trim
Table 10-12 Relaxation Oscillator Timing
Characteristic Symbol Minimum Typical Maximum Unit
Relaxation Oscillator output frequency
Normal Mode
1
Standby Mode
1. Output frequency after factory trim.
f
op
—
8.05
200
—
MHz
kHz
Relaxation Oscillator stabilization time
2
2. This is the time required from standby to normal mode transition.
t
roscs
—1 3µs
Cycle-to-cycle jitter. This is measured on the
CLKO signal (programmed prescaler_clock)
over 264 clocks
3
3. J
A
is required to meet SCI requirements.
t
jitterrosc
—400 ps
Minimum tuning step size .08 %
Maximum tuning step size 40 %
Variation over temperature -40°C to 150°C
4
4. See Figure 10-5.
+1.0 to -1.5 +3.0 to -3.0 %
Variation over temperature 0°C to 105°C
4
0 to +1 +2.0 to -2.0 %
8.16
8.08
8
7.92
7.84
175-25-50 0 50 75 100 125 15025
Degrees C (Junction)
MHz