Atmel ATmega128

353
2467S–AVR–07/09
ATmega128
Figure 200. Calibrated 4 MHz RC Oscillator Frequency vs. V
CC
Figure 201. 4 MHz RC Oscillator Frequency vs. Osccal Value
CALIBRATED 4MHz RC OSCILLATOR FREQUENCY vs. Vcc
85 ˚C
25 ˚C
-40 ˚C
3.6
3.65
3.7
3.75
3.8
3.85
3.9
3.95
4
4.05
4.1
2.5 3 3.5 4 4.5 5 5.5
V
CC
(V)
F
RC
(MHz)
4MHz RC OSCILLATOR FREQUENCY vs. OSCCAL VALUE
25 ˚C
0
1
2
3
4
5
6
7
8
9
0 16 32 48 64 80 96 112 128 144 160 176 192 208 224 240
OSCCAL VALUE
F
RC
(MHz)