Datasheet

390
2549O–AVR–05/12
ATmega640/1280/1281/2560/2561
Figure 32-10. Idle Supply Current vs. V
CC
(Internal RC Oscillator, 128kHz)I
32.2.1 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 Reduction Register. See “Power Reduction Register” on page 54 for
details.
85°C
25°C
-40°C
0
0.05
0.1
0.15
0.2
0.25
0.3
1.5 2 2.5 3 3.5 4 4.5 5 5.5
V
CC
(V)
I
CC
(m
A
)
Table 32-1. 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
PRUSART3 8.0µA 51µA 220µA
PRUSART2 8.0µA 51µA 220µA
PRUSART1 8.0µA 51µA 220µA
PRUSART0 8.0µA 51µA 220µA
PRTWI 12µA 75µA 315µA
PRTIM5 6.0µA 39µA 150µA
PRTIM4 6.0µA 39µA 150µA
PRTIM3 6.0µA 39µA 150µA
PRTIM2 11µA 72µA 300µA
PRTIM1 6.0µA 39µA 150µA
PRTIM0 4.0µA 24µA 100µA
PRSPI 15µA 95µA 400µA
PRADC 12µA 75µA 315µA