ATMEGA8_08 Datasheet, PDF (275/308 Pages) ATMEL Corporation – 8-bit with 8K Bytes In-System Programmable Flash

ATmega8(L)
Internal Oscillator
Speed
Figure 169. Watchdog Oscillator Frequency vs. V_CC
1260
1240
1220
1200
1180
1160
1140
1120
1100
2.5
WATCHDOG OSCILLATOR FREQUENCY vs. V_CC
3
3.5
4
4.5
5
V_CC (V)
-40°C
25°C
85°C
5.5
Figure 170. Calibrated 8 MHz RC Oscillator Frequency vs. Temperature
CALIBRATED 8MHz RC OSCILLATOR FREQUENCY vs. TEMPERATURE
8.5
5.5V
8.3
8.1
4.0V
7.9
7.7
7.5
2.7V
7.3
7.1
6.9
6.7
6.5
-60
-40
-20
0
20
40
60
80
100
Temperature (˚C)
2486T–AVR–05/08
275