Rainbow Electronics ATmega32L - Manual (Page 295)

295
ATmega32(L)
2503C–AVR–10/02
Figure 152. RC Oscillator Frequency vs. Temperature (the devices are calibrated to
4 MHz at Vcc = 5V, T=25c)
Figure 153. RC Oscillator Frequency vs. Operating Voltage (the devices are calibrated
to 4 MHz at Vcc = 5V, T=25c)
CALIBRATED 4MHz 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
3.6
3.65
3.7
3.75
3.8
3.85
3.9
3.95
4
4.05
4.1
-40 -20 0 20 40 60 80
CALIBRATED 4MHz RC OSCILLATOR FREQUENCY
F Rc
(MHz)
V
cc
(V)
T = 45 ˚ C
A
T = 70 ˚ C
A
vs. OPERATING VOLTAGE
T = 25 ˚ C
A
T = -10 ˚ C
A
3.6
3.65
3.7
3.75
3.8
3.85
3.9
3.95
4
4.05
4.1
2.5 3 3.5 4 4.5 5 5.5
T = -40 ˚ C
A
T = 85 ˚ C
A