Datasheet

ATmega164A/PA/324A/PA/644A/PA/1284/P
 2018 Microchip Technology Inc. Data Sheet Complete DS40002070A-page 494
Figure 30-282. ATmega644PA: Watchdog oscillator orequency vs. V
CC
Figure 30-283. ATmega644PA: Calibrated 8MHz RC oscillator vs. V
CC
108
109
110
111
112
113
114
115
116
117
118
119
V
CC
[V]
F
RC
[kHz]
85°C
25°C
-40°C
1.5 4.03.53.02.52.0 5.55.04.5
7.2
7.4
7.6
7.8
8.0
8.2
8.4
V
CC
[V]
F
RC
[MHz]
85°C
25°C
-40°C
4.03.53.02.52.0 5.55.04.5