Datasheet

183
2586N–AVR–04/11
ATtiny25/45/85
It is possible to calculate the typical current consumption based on the numbers from Table 22-2
for other V
CC
and frequency settings that listed in Table 22-1.
22.3.1 Example
Calculate the expected current consumption in idle mode with USI, TIMER0, and ADC enabled
at V
CC
= 2.0V and f = 1 MHz. From Table 22-2 on page 182, third column, we see that we need
to add 10% for the USI, 25% for the ADC, and 10% for the TIMER0 module. Reading from
Figure
22-9
, we find that the idle current consumption is ~0,18 mA at V
CC
= 2.0V and f = 1 MHz. The
total current consumption in idle mode with USI, TIMER0, and ADC enabled, gives:
22.4 Power-down Supply Current
Figure 22-11. Power-down Supply Current vs. V
CC
(Watchdog Timer Disabled)
I
CC
018mA, 101, 025, 01,++ +()× 0261mA,≈=
POWER-DOWN SUPPLY CURRENT vs. V
CC
WATCHDOG TIMER DISABLED
85 ˚C
25 ˚C
-40 ˚C
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.5 2 2.5 3 3.5 4 4.5 5 5.5
V
CC
(V)
I
CC
(uA)