Datasheet

344
ATmega329/3290/649/6490
2552I–AVR–04/07
Figure 188. Calibrated 8 MHz RC Oscillator Frequency vs. V
CC
Figure 189. Calibrated 8 MHz RC Oscillator Frequency vs. Osccal Value
CALIBRATED 8MHz RC OSCILLATOR FREQUENCY vs. V
CC
85 ˚C
25 ˚C
-40 ˚C
7.2
7.4
7.6
7.8
8
8.2
8.4
8.6
1.5 2 2.5 3 3.5 4 4.5 5 5.5
V
CC
(V)
F
RC
(MHz)
CALIBRATED 8MHz RC OSCILLATOR FREQUENCY vs. OSCCAL VALUE
85 ˚C
25 ˚C
-40 ˚C
4
6
8
10
12
14
16
0163248648096 112 128 144 160 176 192 208 224 240 256
OSCCAL VALUE
F
RC
(M Hz)