Relaxation Oscillator Timing
10.7 Relaxation Oscillator Timing
Table 10-12 Relaxation Oscillator Timing
Characteristic
Symbol
Minimum
Typical
Maximum
Unit
Relaxation Oscillator output frequency1
Normal Mode
Standby Mode
fop
—
—
8.05
200
MHz
kHz
Relaxation Oscillator stabilization time2
troscs
—
—
1
3
ms
ps
Cycle-to-cycle jitter. This is measured on the CLKO
signal (programmed prescaler_clock) over 264 clocks3
tjitterrosc
400
—
Minimum tuning step size
Maximum tuning step size
—
—
—
.08
40
—
—
%
%
%
Variation over temperature -40°C to 150ºC4
Variation over temperature 0°C to 105ºC4
+1.0 to -1.5 +3.0 to -3.0
0 to +1 +2.0 to -2.0
—
%
1. Output frequency after application of 8MHz trim value, at 125°C.
2. This is the time required from Standby to Normal mode transition.
3. J is required to meet QSCI requirements.
A
4. See Figure 10-5
56F8025 Data Sheet, Rev. 3
Freescale Semiconductor
Preliminary
127
FREESCALE [ Freescale ]
