at89lp428-25pu ATMEL Corporation, at89lp428-25pu Datasheet - Page 130

• Manufacturer Part Number: at89lp428-25pu
• Description: 8-bit Microcontroller With 4k/8k Bytes In-system Programmable Flash
• Manufacturer: ATMEL Corporation

24.3.3
130
AT89LP428/828
Crystal Oscillator
Figure 24-5. Quartz Crystal Input at 5V
Figure 24-6. Ceramic Resonator Input at 5V
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
0
0
Oscillator Amplitude vs. Frequency
Oscillator Amplitude vs. Frequency
Ceramic Resonator with R1 = 4MΩ
5
5
Quartz Crystal with R1 = 4MΩ
Frequency (MHz)
Frequency (MHz)
10
10
15
15
20
20
25
25
C2=10pF
C2=5pF
C2=0pF
C2=10pF
C2=5pF
C2=0pF
3654A–MICRO–8/09