Atmel ATmega328P Xplained Mini MEGA328P-XMINI MEGA328P-XMINI Ficha De Dados
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MEGA328P-XMINI
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ATmega48A/PA/88A/PA/168A/PA/328/P [DATASHEET]
Atmel-8271H-AVR- ATmega-Datasheet_08/2014
31.7.3 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
Reduction Register. See
modules in Active and Idle mode. The enabling or disabling of the I/O modules are controlled by the Power
Reduction Register. See
for details.
for other V
CC
31.7.3.1 Example
Calculate the expected current consumption in idle mode with TIMER1, ADC, and SPI enabled at V
CC
= 2.0V
and F = 1MHz. From
, third column, we see that we need to add 14.5% for the TIMER1, 22.1% for
, we find that the idle current
consumption is ~0.055 mA at V
CC
= 2.0V and F = 1MHz. The total current consumption in idle mode with
TIMER1, ADC, and SPI enabled, gives:
Table 31-13.
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
Table 31-14.
ATmega328: Additional Current Consumption (percentage) in Active and Idle mode
PRR bit
Additional Current consumption
compared to Active with external
clock (see
compared to Active with external
clock (see
Additional Current consumption
compared to Idle with external
clock (see
compared to Idle with external
clock (see
)
PRUSART0
1.4%
7.8%
PRTWI
3.0%
16.6%
PRTIM2
3.3%
17.8%
PRTIM1
2.7%
14.5%
PRTIM0
0.9%
4.8%
PRSPI
2.9%
15.7%
PRADC
4.1%
22.1%
I
CC
total
0.045 mA (1 + 0.145 + 0.221 + 0.157)
0.069 mA