atmega3250v-8auatmega325v-8ai ATMEL Corporation, atmega3250v-8auatmega325v-8ai Datasheet - Page 310

• Manufacturer Part Number: atmega3250v-8auatmega325v-8ai
• Description: Atmega3250 8-bit Microcontroller With In-system Programmable Flash
• Manufacturer: ATMEL Corporation

29.3
310
Supply Current of I/O modules
ATmega325/3250/645/6450
Figure 29-10. Idle Supply Current vs. V
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
page 39
Table 29-1.
Table 29-2.
It is possible to calculate the typical current consumption based on the numbers from
for other V
PRR bit
PRADC
PRUSART0
PRSPI
PRTIM1
PRR bit
PRADC
PRUSART0
PRSPI
PRTIM1
35
30
25
20
15
10
5
0
1.5
for details.
CC
and frequency settings than listed in
Additional Current Consumption for the different I/O modules (absolute values)
Additional Current Consumption (percentage) in Active and Idle mode
Additional Current consumption
compared to Active with external
clock
(see
2
V
CC
17 µA
9 µA
10 µA
5 µA
Figure 29-1
= 2V, F = 1MHz
2.5
IDLE SUPPLY CURRENT vs. V
5.4%
2.7%
2.9%
1.5%
and
32kHz EXTERNAL OSCILLATOR
3
Figure
CC
V
CC
(32 kHz External Oscillator)
3.5
V
Typical numbers
(V)
CC
116 µA
59 µA
62 µA
33 µA
29-2)
= 3V, F = 4MHz
Table
4
Additional Current consumption
compared to Idle with external
clock
(see
“PRR – Power Reduction Register” on
29-1.
Figure 29-6
CC
4.5
V
16.8%
8.5%
9.0%
4.8%
CC
562 µA
257 µA
135 µA
248 µA
5
and
= 5V, F = 8MHz
Figure
5.5
-40 ˚C
85 ˚C
25 ˚C
29-7)
2570L–AVR–08/07
Table 29-2