ATtiny10/11/12
54
ATtiny11 Typical Characteristics
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 genera-
tor 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 C
L
*V
CC
*f where C
L
= load capacitance,
V
CC
= 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 frequen-
cies 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 34. Active Supply Current vs. Frequency
V
CC
= 5.5V
V
CC
= 5V
V
CC
= 4.5V
T = 25
˚
C
A
V
CC
= 1.8V
V
CC
= 6V
0
2
4
6
8
10
12
14
16
18
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
ACTIVE SUPPLY CURRENT vs. FREQUENCY
Frequency (MHz)
V
CC
= 4V
V
CC
= 3.6V
V
CC
= 3.3V
V
CC
= 3.0V
V
CC
= 2.7V
V
CC
= 2.4V
V
CC
= 2.1V
I (mA)
CC
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