AT89LP6440_14 Datasheet, PDF (177/200 Pages) ATMEL Corporation – 8-bit Microcontroller Compatible with MCS51 Products

AT89LP3240/6440
Figure 26-13. Typical Crystal Oscillator Swing with Quartz Crystal and C1=C2, T_A = 25°C
4.0
3.6V 15pF
3.6V 10pF
3.5
3.6V 5pF
3.0
2.4V 15pF
2.4V 10pF
2.5
2.4V 5pF
2.0
4
8
12
16
20
Frequency (MHz)
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
4.0
3.6V 15pF
3.5
3.6V 10pF
3.0
3.6V 5pF
2.5
2.4V 15pF
2.0
2.4V 10pF
1.5
2.4V 5pF
1.0
4
8
12
16
20
Frequency (MHz)
3706C–MICRO–2/11
177