298
AT90PWM216/316 [DATASHEET]
7710H–AVR–07/2013
It is possible to calculate the typical current consumption based on the numbers from
Table 26-2 for other V
CC and
26.2.1.1
Example 1
Calculate the expected current consumption in idle mode with USART0, TIMER1, and SPI enabled at V
CC = 3.0V
and F = 1MHz. From
Table 26-2, third column, we see that we need to add 18% for the USART0, 26% for the SPI,
and 11% for the TIMER1 module. Reading from Figure 26-5, we find that the idle current consumption is ~0,17mA
at V
CC = 3.0V and F = 1MHz. The total current consumption in idle mode with USART0, TIMER1, and SPI enabled,
gives:
26.2.1.2
Example 2
Same conditions as in example 1, but in active mode instead. From
Table 26-2, second column we see that we
need to add 3.3% for the USART0, 4.8% for the SPI, and 2.0% for the TIMER1 module. Reading from Figure 26-1,
we find that the active current consumption is ~0,6mA at V
CC = 3.0V and F = 1MHz. The total current consumption
in idle mode with USART0, TIMER1, and SPI enabled, gives:
26.2.1.3
Example 3
All I/O modules should be enabled. Calculate the expected current consumption in active mode at V
CC = 3.6V and
F = 10MHz. We find the active current consumption without the I/O modules to be ~ 7.0mA (from Figure 26-2).
Then, by using the numbers from
Table 26-2 - second column, we find the total current consumption:
PRTIM0
4.3%
11%
PRSPI
5.3%
14%
PRUSART
15.6
36
PRADC
10.5%
25%
Table 26-2.
Additional Current Consumption (percentage) in Active and Idle mode (Continued)
PRR bit
Additional Current consumption
compared to Active with external
clock
(see Figure 26-1 and Figure 26-2)
Additional Current consumption
compared to Idle with external clock
(see Figure 26-5 and Figure 26-6)
ICCtotal
0.17mA
10.360.220.14
+++
0.29mA
ICCtotal
0.6mA
1
0.156
0.085
0.053
+++
0.77mA
CCtotal
7.0mA
1
0.1
0.085
0.043
0.053
0.156
0.105
+
++++
+
12.2mA