56F8014 datasheet(101/124 Pages) FREESCALE

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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 Mode1

Standby Mode

1. Output frequency after factory trim.

fop

—

8.05

200

—

MHz

kHz

Relaxation Oscillator stabilization time2

2. This is the time required from standby to normal mode transition.

troscs

—1

µs

Cycle-to-cycle jitter. This is measured on the

CLKO signal (programmed prescaler_clock)

over 264 clocks3

3. JA is required to meet SCI requirements.

tjitterrosc

—400

Minimum tuning step size

.08

Maximum tuning step size

Variation over temperature -40

°C to 150°C4

4. See Figure 10-5.

+1.0 to -1.5

+3.0 to -3.0

Variation over temperature 0

°C to 105°C4

0 to +1

+2.0 to -2.0

8.16

8.08

7.92

7.84

175

-25

-50

100

125

150

Degrees C (Junction)

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