ATtiny26 Typical
Characteristics
Active Supply Current
ATtiny26(L)
The following charts show typical behavior. These figures are not tested during manufacturing. All current consumption measurements are performed with all I/O pins configured as inputs and with internal pull-ups enabled. A sine wave generator with rail- to-rail output is used as clock source.
The power consumption in Power-down mode is independent of clock selection.
The current consumption is a function of several factors such as: operating voltage, operating frequency, loading of I/O pins, switching rate of I/O pins, code executed and ambient temperature. The dominating factors are operating voltage and frequency.
The current drawn from capacitive loaded pins may be estimated (for one pin) as CL*VCC*f where CL = load capacitance, VCC = operating voltage and f = average switching frequency of I/O pin.
The parts are characterized at frequencies higher than test limits. Parts are not guaranteed to function properly at frequencies higher than the ordering code indicates.
The difference between current consumption in Power-down mode with Watchdog Timer enabled and Power-down mode with Watchdog Timer disabled represents the differential current drawn by the Watchdog Timer.
Figure 71. Active Supply Current vs. Frequency (0.1 - 1.0 MHz)
ACTIVE SUPPLY CURRENT vs. FREQUENCY
0.1 - 1.0 MHz
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1.6 |
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1.4 |
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5.5V |
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1.2 |
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5.0V |
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(mA) |
1 |
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4.5V |
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4.0V |
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0.8 |
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3.3V |
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CC |
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3.0V |
I |
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0.6 |
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2.7V |
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0.4 |
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0.2 |
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0 |
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0 |
0.1 |
0.2 |
0.3 |
0.4 |
0.5 |
0.6 |
0.7 |
0.8 |
0.9 |
1 |
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Frequency (MHz) |
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133
1477J–AVR–06/07
Figure 72. Active Supply Current vs. Frequency (1 - 20 MHz)
ICC (mA)
ACTIVE SUPPLY CURRENT vs. FREQUENCY
1 - 20 MHz
25
5.5V
20
5.0V
4.5V
15
4.0V
10
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3.3V |
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5 |
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3.0V |
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2.7V |
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0 |
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0 |
2 |
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Frequency (MHz) |
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Figure 73. Active Supply Current vs. VCC (Internal RC Oscillator, 8 MHz)
ICC (mA)
ACTIVE SUPPLY CURRENT vs. VCC
INTERNAL RC OSCILLATOR, 8 MHz
14
-40°C
12
25°C
85°C
10
8
6
4
2
0
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
VCC (V)
134 ATtiny26(L)
1477J–AVR–06/07
ATtiny26(L)
Figure 74. Active Supply Current vs. VCC (Internal RC Oscillator, 4 MHz)
ACTIVE SUPPLY CURRENT vs. VCC
ICC (mA)
INTERNAL RC OSCILLATOR, 4 MHz
8
7 |
85°C |
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25°C |
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6 |
-40°C |
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5 |
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4 |
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3 |
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2 |
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1 |
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2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
VCC (V)
Figure 75. Active Supply Current vs. VCC (Internal RC Oscillator, 2 MHz)
ICC (mA)
ACTIVE SUPPLY CURRENT vs. VCC
INTERNAL RC OSCILLATOR, 2 MHz
4 |
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85°C |
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3.5 |
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25°C |
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3 |
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-40°C |
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2.5 |
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2 |
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1.5 |
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1 |
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0.5 |
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0 |
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2 2.5 3 3.5 4 4.5 5 5.5
VCC (V)
135
1477J–AVR–06/07
Figure 76. Active Supply Current vs. VCC (Internal RC Oscillator, 1 MHz)
ACTIVE SUPPLY CURRENT vs. VCC
ICC (mA)
INTERNAL RC OSCILLATOR, 1 MHz
1.8 |
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25°C |
1.6 |
85°C |
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1.4 |
-40°C |
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1.2 |
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1 |
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0.8 |
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0.6 |
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0.4 |
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0.2 |
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0
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
VCC (V)
Figure 77. Active Supply Current vs. VCC (PLL Oscillator)
ACTIVE SUPPLY CURRENT vs. VCC
PLL OSCILLATOR
25
20 |
-40°C |
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25°C |
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85°C |
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15 |
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ICC (mA)
10
5
0
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
VCC (V)
136 ATtiny26(L)
1477J–AVR–06/07