ATMEGA48V_06 ATMEL [ATMEL Corporation], ATMEGA48V_06 Datasheet - Page 322

• Manufacturer Part Number: ATMEGA48V_06
• Description: 8-bit Microcontroller with 8K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

28.3.0.1
28.3.0.2
28.3.0.3
322
ATmega48/88/168
Example 1
Example 2
Example 3
Table 28-2.
It is possible to calculate the typical current consumption based on the numbers from Table 2 for
other V
Calculate the expected current consumption in idle mode with USART0, TIMER1, and TWI
enabled at V
18% for the USART0, 26% for the TWI, and 11% for the TIMER1 module. Reading from Figure
3, we find that the idle current consumption is ~0,075mA at V
current consumption in idle mode with USART0, TIMER1, and TWI enabled, gives:
Same conditions as in example 1, but in active mode instead. From Table 2, second column we
see that we need to add 3.3% for the USART0, 4.8% for the TWI, and 2.0% for the TIMER1
module. Reading from Figure 1, we find that the active current consumption is ~0,42mA at V
3.0V and F = 1MHz. The total current consumption in idle mode with USART0, TIMER1, and
TWI enabled, gives:
All I/O modules should be enabled. Calculate the expected current consumption in active mode
at V
to be ~ 4.0mA (from Figure 2). Then, by using the numbers from Table 2 - second column, we
find the total current consumption:
I
I
I
CC
CC
CC
PRR bit
PRUSART0
PRTWI
PRTIM2
PRTIM1
PRTIM0
PRSPI
PRADC
total
total
total
CC
≈
≈
≈
= 3.6V and F = 10MHz. We find the active current consumption without the I/O modules
CC
0,075mA
0,42mA
4,0mA
and frequency settings than listed in Table 1.
CC
•
Additional Current Consumption (percentage) in Active and Idle mode
•
(
= 3.0V and F = 1MHz. From Table 2, third column, we see that we need to add
•
1
(
1
(
+
1
Additional Current consumption
compared to Active with external
clock
(see
3.3%
4.8%
4.7%
2.0%
1.6%
6.1%
4.9%
+
0,033
+
0,033
0,18
Figure 28-1
+
+
+
0,048
0,26
0,048
+
+
+
0,11
0,047
and
0,02
)
Figure
≈
)
+
≈
0,116mA
0,02
0,46mA
+
28-2)
0,016
+
0,061
Additional Current consumption
compared to Idle with external clock
(see
18%
26%
25%
11%
8.5%
33%
26%
+
CC
0,049
Figure 28-7
= 3.0V and F = 1MHz. The total
)
≈
5,1mA
and
Figure
2545J–AVR–12/06
28-8)
CC
=