ATMEGA644PV ATMEL [ATMEL Corporation], ATMEGA644PV Datasheet - Page 342

• Manufacturer Part Number: ATMEGA644PV
• Description: 8-bit Microcontroller with 16/32/64K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

Example
27.1.4
342
ATmega164P/324P/644P
Power-down Supply Current
Table 27-2.
It is possible to calculate the typical current consumption based on the numbers from
on page 341
Calculate the expected current consumption in idle mode with TIMER1, ADC, and SPI enabled
at V
to add 10.5% for the TIMER1, 16.8 % for the ADC, and 12.9 % for the SPI module. Reading
from
2.0V and F = 1MHz. The total current consumption in idle mode with TIMER1, ADC, and SPI
enabled, gives:
Figure 27-11. Power-down Supply Current vs. V
I
CC
PRR bit
PRUSART1
PRUSART0
PRTWI
PRTIM2
PRTIM1
PRTIM0
PRADC
PRSPI
total
CC
Figure 27-6 on page
≈
= 2.0V and F = 1MHz. From
1,8
1,6
1,4
1,2
0,8
0,6
0,4
0,2
0,115mA
2
1
0
1,5
for other V
Additional Current Consumption (percentage) in Active and Idle mode
•
(
Additional Current consumption
compared to Active with external
clock (see
336
1.8%
2.4%
5.4%
4.6%
2.7%
1.6%
4.5%
3.3%
2
1
+
0,105
and
POWER-DOWN SUPPLY CURRENT vs. V
CC
2,5
339, we find that the idle current consumption is ~0,115 mA at V
Figure 27-2 on page
and frequency settings than listed in
+
Figure 27-1 on page
0,168
WATCHDOG TIMER DISABLED
+
3
Table 27-2 on page
0,129
V
)
CC
3,5
≈
(V)
0,161mA
337)
CC
(Watchdog Timer Disabled).
4
Additional Current consumption
compared to Idle with external
clock (see
339
6.9%
9.1%
21.2%
17.4%
10.5%
6.0%
16.8%
12.9%
342, third column, we see that we need
and
4,5
Figure 27-7 on page
Table 27-2 on page
Figure 27-6 on page
CC
5
5,5
-40 ˚C
85 ˚C
25 ˚C
339)
8011D–AVR–02/07
342.
Table 27-1
CC
=