
339
7647A–AVR–02/08
ATmega32/64/M1/C1
26.10 Internal Oscillator Speed
Figure 26-35. Watchdog Oscillator Frequency vs. V
CC
Figure 26-36. Calibrated 8 MHz RC Oscillator Frequency vs. Temperature
WATCHDOG OSCILLATOR FREQUENCY vs. OPERATING VOLTAGE
105 °C
85 °C
25 °C
-40 °C
96
98
100
102
104
106
108
110
2 2,5 3 3,5 4 4,5 5 5,5
V
CC
(V)
F
RC
(kHz)
CALIBRATED 8 MHz RC OSCILLATOR FREQUENCY vs. TEMPERATURE
5.0 V
2.7 V
1.8 V
7.4
7.5
7.6
7.7
7.8
7.9
8
8.1
8.2
8.3
8.4
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
Temperature (C)
F
RC
(MHz)
T
E
M
P
L
A
T
E
T
O
B
E
C
H
A
R
A
C
T
E
R
I
Z
E
D
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