Rainbow Electronics ATmega3290P_V - Manual (Page 343)

343
ATmega329/3290/649/6490
2552H–AVR–11/06
Internal Oscillator Speed Figure 186. Watchdog Oscillator Frequency vs. V
CC
Figure 187. Calibrated 8 MHz RC Oscillator Frequency vs. Temperature
WATCHDOG OSCILLATOR FREQUENCY vs.V
CC
85 ˚C
25 ˚C
-40 ˚C
1000
1050
1100
1150
1200
1250
1300
1.5 2 2.5 3 3.5 4 4.5 5 5.5
V
CC
(V)
F
RC
(kHz)
CALIBRATED 8MHz RC OSCILLATOR FREQUENCY vs. TEMPERATURE
5.5 V
4.5 V
3.3 V
2.7 V
1.8 V
7.2
7.4
7.6
7.8
8
8.2
8.4
8.6
-60 -40 -20 0 20 40 60 80 100
Temperature (C)
F
RC
(M
Hz)