Specifications

177
3706C–MICRO–2/11
AT89LP3240/6440
Figure 26-13. Typical Crystal Oscillator Swing with Quartz Crystal and C1=C2, T
A
= 25°C
Note: 1. Replacing capacitor C1 with a resistor R1 of 4 MΩ results in similar swing levels on XTAL1.
Figure 26-14. Typical Crystal Oscillator Swing with Ceramic Resonator and C1=C2, T
A
= 25°C
4 8 12 16 20
2.0
2.5
3.0
3.5
4.0
3.6V 15pF
3.6V 10pF
3.6V 5pF
2.4V 15pF
2.4V 10pF
2.4V 5pF
Frequency (MHz)
Vpp on XTAL1 (V)
4 8 12 16 20
1.0
1.5
2.0
2.5
3.0
3.5
4.0
3.6V 15pF
3.6V 10pF
3.6V 5pF
2.4V 15pF
2.4V 10pF
2.4V 5pF
Frequency (MHz)
Vpp on XTAL1 (V)