Datasheet

492
8272A–AVR–01/10
164A/164PA/324A/324PA/644A/644PA/1284/1284P
Figure 28-282.ATmega644PA: Watchdog Oscillator Frequency vs. V
CC
Figure 28-283.ATmega644PA: Calibrated 8 MHz RC Oscillator vs. V
CC
108
109
110
111
112
113
114
115
116
117
118
119
1.5 2 2.5 33.5 4 4.5 5 5.5
V
CC
(V)
F
RC
(kHz)
85 °C
25 °C
-40 °C
7.2
7.4
7.6
7.8
8
8.2
8.4
22.533.5 4 4.5 5 5.5
V
CC
(V)
F
RC
(MHz)
85 °C
25 °C
-40 °C