Datasheet

518
8272A–AVR–01/10
164A/164PA/324A/324PA/644A/644PA/1284/1284P
28.7.11 Internal Oscillator Speed
Figure 28-331.ATmega1284: Watchdog Oscillator Frequency vs. Temperature
Figure 28-332.ATmega1284: Watchdog Oscillator Frequency vs. V
CC
5.5 V
4.0 V
3.3 V
2.7 V
113
114
115
116
117
118
119
120
121
122
123
-40 -30 -20 -10 0 10 20 30 40 50 60 70 8090
Temperature (°C)
F
RC
(kHz)
85 °C
25 °C
-40 °C
114
116
118
120
122
124
2 2.5 3 3.5 4 4.5 5 5.5
V
CC
(V)
F
RC
(kHz)