Datasheet

405
2549O–AVR–05/12
ATmega640/1280/1281/2560/2561
Figure 32-37. Calibrated 8MHz RC Oscillator Frequency vs. V
CC
Figure 32-38. Calibrated 8MHz RC Oscillator Frequency vs. Temperature
85°C
25°C
-40°C
7.6
7.7
7.8
7.9
8
8.1
8.2
8.3
1.5 2 2.5 3 3.5 4 4.5 5 5.5
V
CC
(V)
F
RC
(MHz)
5.0V
3.0V
7.9
8
8.1
8.2
8.3
8.4
8.5
-60 -40 -20 0 20 40 60 80 100
Temperature (°C)
F
RC
(MHz)