ATMEGA169 ATMEL [ATMEL Corporation], ATMEGA169 Datasheet - Page 310

• Manufacturer Part Number: ATMEGA169
• Description: 8-bit Microcontroller with 16K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

Supply Current of I/O
modules
310
ATmega169/V
Figure 149. Idle Supply Current vs. V
The tables and formulas below can be used to calculate the additional current consump-
tion 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 “Power Reduction
Register” on page 34 for details.
Table 137.
Additional Current Consumption for the different I/O modules (absolute values)
Table 138.
Additional Current Consumption (percentage) in Active and Idle mode
PRR bit
PRADC
PRUSART0
PRSPI
PRTIM1
PRLCD
PRR bit
PRADC
PRUSART0
PRSPI
PRTIM1
PRLCD
35
30
25
20
15
10
5
0
1.5
Additional Current consumption
compared to Active with external
clock
(see Figure 140 and Figure 141)
2
V
CC
18 µA
11µA
10 µA
19 µA
19 µA
= 2V, F = 1MHz
2.5
IDLE SUPPLY CURRENT vs. V
5.6%
3.7%
3.2%
5.6%
5.9%
3
CC
32 kHz Crystal
(32 kHz Crystal)
V
CC
3.5
V
Typical numbers
(V)
CC
72 µA
116 µA
79 µA
117 µA
124 µA
= 3V, F = 4MHz
4
Additional Current consumption
compared to Idle with external
clock
(see Figure 145 and Figure 146)
CC
4.5
V
18.7%
12.4%
10.8%
18.6%
19.9%
CC
495 µA
313 µA
283 µA
481 µA
531 µA
5
= 5V, F = 8MHz
2514P–AVR–07/06
5.5
25 ˚C