
133
ATtiny26(L)
1477B–AVR–04/02
Figure 77. RC Oscillator Frequency vs. Temperature (the devices are calibrated to 8
MHz at Vcc = 5V, T=25c)
Figure 78. RC Oscillator Frequency vs. Operating Voltage (the devices are calibrated
to 8 MHz at Vcc = 5V, T=25c)
CALIBRATED 8MHz 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
6.8
7
7.2
7.4
7.6
7.8
8
8.2
8.4
-40-20 0 20406080
CALIBRATED 8MHz RC OSCILLATOR FREQUENCY
F
Rc
(MHz)
T = 45
˚
C
A
T = 70
˚
C
A
vs. OPERATING VOLTAGE
T = 25
˚
C
A
T = -10
˚
C
A
T = -40
˚
C
A
T = 85
˚
C
A
6.8
7
7.2
7.4
7.6
7.8
8
8.2
8.4
2.5 3 3.5 4 4.5 5 5.5
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