Datasheet

331
4317K–AVR–03/2013
AT90PWM2/3/2B/3B
27.9 Internal Oscillator Speed
Figure 27-35. Watchdog Oscillator Frequency vs. V
CC
Figure 27-36. Calibrated 8 MHz RC Oscillator Frequency vs. Temperature
105 °C
85 °C
25 °C
-40 °C
96
98
100
102
104
106
108
110
22,533,544,555,5
V
CC
(V)
F
RC
(kHz)
CALIBRATED 8MHz RC OSCILLATOR FREQUENCY vs. TEMPERATURE
10000 Cycles sampled w ith 250nS
7.4
7.5
7.6
7.7
7.8
7.9
8
8.1
8.2
8.3
8.4
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110
Temperature
OSCCAL (MHz
)
2.7
5