![](http://datasheet.mmic.net.cn/Atmel/AT32AP7000-CTUR_datasheet_96418/AT32AP7000-CTUR_321.png)
321
2545T–AVR–05/11
ATmega48/88/168
Figure 30-12. Idle supply current vs. V
CC (32kHz external oscillator).
30.3
Supply current of I/O 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
details.
25°C
0
5
10
15
20
25
30
1.5
2
2.5
3
3.5
4
4.5
5
5.5
VCC (V)
I CC
(A)
Table 30-1.
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
PRUSART0
8.0A
51A
220A
PRTWI
12A
75A
315A
PRTIM2
11A
72A
300A
PRTIM1
5.0A
32A
130A
PRTIM0
4.0A
24A
100A
PRSPI
15A
95A
400A
PRADC
12A
75A
315A
Table 30-2.
Additional current consumption (percentage) in active and idle mode.
PRR bit
Additional current consumption
compared to active with external clock
Additional current consumption
compared to Idle with external clock
PRUSART0
3.3%
18%
PRTWI
4.8%
26%
PRTIM2
4.7%
25%