Datasheet

349
2467X–AVR–06/11
ATmega128
Internal Oscillator
Speed
Figure 192. Watchdog Oscillator Frequency vs. V
CC
Figure 193. Calibrated 1MHz RC Oscillator Frequency vs. Temperature
85 °C
25 °C
-40 °C
1060
1080
1100
1120
1140
1160
1180
1200
1220
2.5 3 3.5 4 4.5 5 5.5
V
CC
(V)
F
RC
(kHz)
5.5V
5.0V
4.5V
4.0V
3.6V
3.3V
2.7V
0.9
0.92
0.94
0.96
0.98
1
1.02
-60 -40 -20 0 20 40 60 80 100
Temperature (°C)
F
RC
(MHz)