Rainbow Electronics ATmega32L - Manual (Page 293)

293
ATmega32(L)
2503C–AVR–10/02
Figure 148. RC Oscillator Frequency vs. Temperature (the devices are calibrated to
1 MHz at Vcc = 5V, T=25c)
Figure 149. RC Oscillator Frequency vs. Operating Voltage (the devices are calibrated
to 1 MHz at Vcc = 5V, T=25c)
CALIBRATED 1MHz RC OSCILLATOR FREQUENCY
F Rc
(MHz)
T
a
(˚C)
vs. TEMPERATURE
V = 2.7V
cc
V = 5.5V
cc
V = 5.0V
cc
V = 4.5V
cc
V = 4.0V
cc
V = 3.6V
cc
V = 3.3V
cc
V = 3.0V
cc
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.99
1
1.01
1.02
1.03
-40 -20 0 20 40 60 80
CALIBRATED 1MHz RC OSCILLATOR FREQUENCY
F Rc
(MHz)
V
cc
(V)
T = 85 ˚ C
A
T = 45 ˚ C
A
T = 70 ˚ C
A
vs. OPERATING VOLTAGE
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.99
1
1.01
1.02
1.03
2.5 3 3.5 4 4.5 5 5.5
T = -40 ˚ C
A
T = 25 ˚ C
A
T = -10 ˚ C
A