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MDT2005
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P. 15
VER1.1
13. External Capacitor Selection For Crystal Oscillator
@ Vdd=3.0V~5.0 V
Osc. Type
Resonator Freq.
C1
C2
20 MHz
5 pF ~10 pF
10 pF~20 pF
HF
10 MHz
10 pF ~50 pF
20 pF ~100 pF
4 MHz
10 pF ~30 pF
20 pF ~100 pF
10 MHz
10 pF ~30 pF
10 pF ~50 pF
XT
4 MHz
10 pF ~50 pF
10 pF ~100 pF
1 MHz
10 pF ~30 pF
10 pF ~50 pF
1 MHz
5 pF ~10 pF
5 pF ~10 pF
LF
455 K
10 pF ~50 pF
10 pF ~50 pF
32 K
10 pF ~30 pF
20 pF ~50 pF
MDT2005
OSC1
OSC2
C1
C2
To increase the stability of oscillator and the ability of anti-noise, the above values of the external capacitor range
can be recommended for reference, but the higher capacitance also increases the start-up time.