Atmel ATmega48A Manual page 512

30.8.3 ATmega328P Supply Current of IO Modules
8271D–AVR–05/11
ATmega48A/PA/88A/PA/168A/PA/328/P
Figure 30-339.ATmega328P: Idle Supply Current vs. Vcc (Internal RC Oscillator, 8MHz)
2
1.6
1.2
0.8
0.4
0
1.5 2
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 Reduction Register. See
details.
Table 30-15. ATmega328P: Additional Current Consumption for the different I/O modules
(absolute values)
PRR bit Typical numbers
V = 2V, F = 1MHz
CC
PRUSART0
PRTWI
PRTIM2
PRTIM1
PRTIM0
PRSPI
PRADC
2.5 3 3.5
V (V)
CC
V = 3V, F = 4MHz
CC
3.20 µA 22.17 µA
7.34 µA 46.55 µA
7.34 µA 50.79 µA
6.19 µA 41.25 µA
1.89 µA 14.28 µA
6.94 µA 43.84 µA
8.66 µA 61.80 µA
4 4.5 5
"Power Reduction Register" on page 43
V = 5V, F = 8MHz
CC
100.25 µA
199.25 µA
224.25 µA
176.25 µA
61.13 µA
186.50 µA
295.38 µA
85 °C
25 °C
-40 °C
5.5
for
512