User Manual

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ATmega48A/PA/88A/PA/168A/PA/328/P [DATASHEET]
8271E–AVR–07/2012
Figure 30-292.ATmega328: Idle Supply Current vs. Vcc (Internal RC Oscillator, 8MHz)
30.7.3 ATmega328 Supply Current of IO Modules
The tables and formulas below can be used to calculate the additional current consumption for the different I/O
modules in Active and Idle mode. The enabling or disabling of the I/O modules are controlled by the Power Reduc-
tion Register. See ”Power Reduction Register” on page 41 for details.
85 °C
25 °C
-40 °C
0
0.4
0.8
1.2
1.6
2
1.5 2 2.5 33.5 4 4.5 5 5.5
V
CC
(V)
I
CC
(mA)
Table 30-13. ATmega328: Additional Current Consumption for the different I/O modules (absolute values)
PRR bit Typical numbers
V
CC
= 2V, F = 1MHz V
CC
= 3V, F = 4MHz V
CC
= 5V, F = 8MHz
PRUSART0 3.20 µA 22.17 µA 100.25 µA
PRTWI 7.34 µA 46.55 µA 199.25 µA
PRTIM2 7.34 µA 50.79 µA 224.25 µA
PRTIM1 6.19 µA 41.25 µA 176.25 µA
PRTIM0 1.89 µA 14.28 µA 61.13 µA
PRSPI 6.94 µA 43.84 µA 186.50 µA
PRADC 8.66 µA 61.80 µA 295.38 µA