Datasheet

352
2467X–AVR–06/11
ATmega128
Figure 198. 2MHz RC Oscillator Frequency vs. Osccal Value
Figure 199. Calibrated 4MHz RC Oscillator Frequency vs. Temperature
25 °C
0
0.5
1
1.5
2
2.5
3
3.5
4
0 16 32 48 64 80 96 112 128 144 160 176 192 208 224 240 256
OSCCAL VALUE
F
RC
(MHz)
5.5V
5.0V
4.5V
4.0V
3.6V
3.3V
2.7V
3.6
3.65
3.7
3.75
3.8
3.85
3.9
3.95
4
4.05
4.1
-60 -40 -20 0 20 40 60 80 100
Temperature (°C)
F
RC
(MHz)