Atmel ATmega128

349
2467S–AVR–07/09
ATmega128
Internal Oscillator
Speed
Figure 192. Watchdog Oscillator Frequency vs. V
CC
Figure 193. Calibrated 1 MHz RC Oscillator Frequency vs. Temperature
WATCHDOG OSCILLATOR FREQUENCY vs. V
CC
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)
CALIBRATED 1MHz RC OSCILLATOR FREQUENCY vs. TEMPERATURE
5.5 V
5.0 V
4.5 V
4.0 V
3.6 V
3.3 V
2.7 V
0.9
0.92
0.94
0.96
0.98
1
1.02
-60 -40 -20 0 20 40 60 80 100
Temperature
F
RC
(MHz)