ATmega168A

Manufacturer Part NumberATmega168A
ManufacturerAtmel Corporation
ATmega168A datasheets
 


Specifications of ATmega168A

Flash (kbytes)16 KbytesPin Count32
Max. Operating Frequency20 MHzCpu8-bit AVR
# Of Touch Channels16Hardware Qtouch AcquisitionNo
Max I/o Pins23Ext Interrupts24
Usb SpeedNoUsb InterfaceNo
Spi2Twi (i2c)1
Uart1Graphic LcdNo
Video DecoderNoCamera InterfaceNo
Adc Channels8Adc Resolution (bits)10
Adc Speed (ksps)15Analog Comparators1
Resistive Touch ScreenNoTemp. SensorYes
Crypto EngineNoSram (kbytes)1
Eeprom (bytes)512Self Program MemoryYES
Dram MemoryNoNand InterfaceNo
PicopowerNoTemp. Range (deg C)-40 to 85
I/o Supply Class1.8 to 5.5Operating Voltage (vcc)1.8 to 5.5
FpuNoMpu / Mmuno / no
Timers3Output Compare Channels6
Input Capture Channels1Pwm Channels6
32khz RtcYesCalibrated Rc OscillatorYes
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30.4.3
ATmega88PA: Supply Current of IO Modules
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 30-7.
PRR bit
PRUSART0
PRTWI
PRTIM2
PRTIM1
PRTIM0
PRSPI
PRADC
Table 30-8.
PRR bit
PRUSART0
PRTWI
PRTIM2
PRTIM1
PRTIM0
PRSPI
PRADC
It is possible to calculate the typical current consumption based on the numbers from
for other V
30.4.3.1
Example
Calculate the expected current consumption in idle mode with TIMER1, ADC, and SPI enabled
at V
= 2.0V and F = 1MHz. From
CC
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:
I
CC
total
8271D–AVR–05/11
ATmega48A/PA/88A/PA/168A/PA/328/P
ATmega88PA: Additional Current Consumption for the different I/O modules
(absolute values)
Typical numbers
V
= 2V, F = 1MHz
CC
3.0uA
6.1uA
5.2uA
3.8uA
1.5uA
5.2uA
6.3uA
ATmega88PA: Additional Current Consumption (percentage) in Active and Idle
mode
Additional Current consumption
compared to Active with external
clock (see
Figure 30-142 on page
407
and
Figure 30-143 on page
408)
1.8%
3.9%
2.9%
2.1%
0.8%
3.5%
4.2%
and frequency settings than listed in
CC
Table
410, we find that the idle current consumption is ~0.027 mA at V
0.027 mA (1 + 0.136 + 0.263 + 0.215)
”Power Reduction Register” on page 43
V
= 3V, F = 4MHz
V
= 5V, F = 8MHz
CC
CC
21.3uA
97.9uA
45.4uA
219.0uA
35.2uA
149.5uA
25.6uA
110.0uA
9.8uA
39.6uA
40.0uA
199.6uA
48.7uA
247.0uA
Additional Current consumption
compared to Idle with external
clock (see
Figure 30-147 on page
410
and
Figure 30-148 on page
410)
11.4%
24.4%
18.6%
13.6%
5.2%
21.5%
26.3%
Table
30-7.
30-8, third column, we see that we need to add 13.6%
0.043 mA
for
Table 30-8
Figure 30-147
= 2.0V and F =
CC
413