Atmel ATmega328P Xplained Mini MEGA328P-XMINI MEGA328P-XMINI Data Sheet
Product codes
MEGA328P-XMINI
378
ATmega48A/PA/88A/PA/168A/PA/328/P [DATASHEET]
Atmel-8271H-AVR- ATmega-Datasheet_08/2014
31.3.3 ATmega88A: 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
31.3.3.1 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 13.6% for the TIMER1,
26.3% for the ADC, and 21.5% for the SPI module. Reading from
, we find that the
idle current consumption is ~0.027 mA at V
CC
= 2.0V and F = 1MHz. The total current consumption in idle mode
with TIMER1, ADC, and SPI enabled, gives:
Table 31-5.
ATmega88PA: 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
3.0µA
21.3µA
97.9µA
PRTWI
6.1µA
45.4µA
219.0µA
PRTIM2
5.2µA
35.2µA
149.5µA
PRTIM1
3.8µA
25.6µA
110.0µA
PRTIM0
1.5µA
9.8µA
39.6µA
PRSPI
5.2µA
40.0µA
199.6µA
PRADC
6.3µA
48.7µA
247.0µA
Table 31-6.
ATmega88PA: 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
1.8%
11.4%
PRTWI
3.9%
24.4%
PRTIM2
2.9%
18.6%
PRTIM1
2.1%
13.6%
PRTIM0
0.8%
5.2%
PRSPI
3.5%
21.5%
PRADC
4.2%
26.3%
I
CC
total
0.027 mA (1 + 0.136 + 0.263 + 0.215)
0.043 mA