ATMEGA168PA-PU Atmel, ATMEGA168PA-PU Datasheet - Page 412

• Manufacturer Part Number: ATMEGA168PA-PU
• Description: MCU, 8BIT, AVR, 16K FLASH, 28PDIP
• Manufacturer: Atmel

Specifications of ATMEGA168PA-PU

• Controller Family/series: Atmega
• No. Of I/o's: 23
• Eeprom Memory Size: 512Byte
• Ram Memory Size: 1KB
• Cpu Speed: 20MHz
• No.: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 16KB
• Oscillator Type: External, Internal
• Rohs Compliant: Yes

29.4.3
29.4.3.1
8271C–AVR–08/10
ATmega88PA: Supply Current of IO Modules
Example
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
details.
Table 29-7.
Table 29-8.
It is possible to calculate the typical current consumption based on the numbers from
for other V
Calculate the expected current consumption in idle mode with TIMER1, ADC, and SPI enabled
at V
for the TIMER1, 26.3% for the ADC, and 21.5% for the SPI module. Reading from
on page
1MHz. The total current consumption in idle mode with TIMER1, ADC, and SPI enabled, gives:
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
PRR bit
PRUSART0
PRTWI
PRTIM2
PRTIM1
PRTIM0
PRSPI
PRADC
PRR bit
PRUSART0
PRTWI
PRTIM2
PRTIM1
PRTIM0
PRSPI
PRADC
I
CC
CC
total
= 2.0V and F = 1MHz. From
≈
409, we find that the idle current consumption is ~0.027 mA at V
0.027 mA (1 + 0.136 + 0.263 + 0.215)
CC
and frequency settings than listed in
ATmega88PA: Additional Current Consumption for the different I/O modules
(absolute values)
ATmega88PA: Additional Current Consumption (percentage) in Active and Idle
mode
⋅
Typical numbers
3.0 uA
6.1 uA
5.2 uA
3.8 uA
Additional Current consumption
compared to Active with external
clock (see
406
407)
1.8%
3.9%
2.9%
2.1%
0.8%
3.5%
4.2%
1.5 uA
6.3 uA
5.2 uA
V
CC
and
= 2V, F = 1 MHz
Figure 29-143 on page
Figure 29-142 on page
Table
29-8, third column, we see that we need to add 13.6%
21.3 uA
45.4 uA
35.2 uA
25.6 uA
9.8 uA
40.0 uA
48.7 uA
≈
V
0.043 mA
CC
= 3V, F = 4 MHz
Table
”Power Reduction Register” on page 42
Additional Current consumption
compared to Idle with external
clock (see
409
409)
11.4%
24.4%
18.6%
13.6%
5.2%
21.5%
26.3%
29-7.
and
Figure 29-148 on page
Figure 29-147 on page
97.9 uA
219.0 uA
149.5 uA
110.0 uA
39.6 uA
199.6 uA
247.0 uA
V
CC
= 5V, F = 8 MHz
CC
= 2.0V and F =
Figure 29-147
Table 29-8
412
for