Datasheet
ATmega48A/PA/88A/PA/168A/PA/328/P
2018 Microchip Technology Inc. Data Sheet Complete DS40002061A-page 544
Figure 32-36.ATmega48PA: Calibrated 8MHz RC Oscillator Frequency vs. Temperature
Figure 32-37.ATmega48PA: Calibrated 8MHz RC Oscillator Frequency vs. OSCCAL Value
5.5V
4.0V
3.0V
1.8V
7.65
7.7
7.75
7.8
7.85
7.9
7.95
8
8.05
8.1
8.15
8.2
-40 -30 -20 -10 0 10 20 304050607080 90 100 110
Temperature (°C)
F
RC
(MHz)
105°C
85°C
25°C
-40°C
4
5
6
7
8
9
10
11
12
13
14
15
0163248 64 80 96112128 144 160 176 192208 224 240 256
OSCCAL (X1)
F
RC
(MHz)