ATmega168A Atmel Corporation, ATmega168A Datasheet - Page 488

• Manufacturer Part Number: ATmega168A
• Manufacturer: Atmel Corporation

Specifications of ATmega168A

• Flash (kbytes): 16 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 23
• Ext Interrupts: 24
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 1
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

30.7.3.1
8271D–AVR–05/11
Example
Table 30-14. ATmega328: Additional Current Consumption (percentage) in Active and Idle
It is possible to calculate the typical current consumption based on the numbers from
13
Calculate the expected current consumption in idle mode with TIMER1, ADC, and SPI enabled
at V
14.5% for the TIMER1, 22.1% for the ADC, and 15.7% for the SPI module. Reading from
30-336 on page
= 1MHz. The total current consumption in idle mode with TIMER1, ADC, and SPI enabled, gives:
I
CC
PRR bit
PRUSART0
PRTWI
PRTIM2
PRTIM1
PRTIM0
PRSPI
PRADC
for other V
total
CC
≈
= 2.0V and F = 1MHz. From
0.045 mA (1 + 0.145 + 0.221 + 0.157)
CC
mode
510, we find that the idle current consumption is ~0.055 mA at V
⋅
and frequency settings than listed in
Additional Current consumption
compared to Active with external
clock (see
507
508)
ATmega48A/PA/88A/PA/168A/PA/328/P
and
Figure 30-331 on page
Figure 30-330 on page
1.4%
3.0%
3.3%
2.7%
0.9%
2.9%
4.1%
Table
≈
0.069 mA
30-14, third column, we see that we need to add
Table
Additional Current consumption
compared to Idle with external
clock (see
510
510)
and
30-14.
Figure 30-336 on page
Figure 30-335 on page
16.6%
17.8%
14.5%
15.7%
22.1%
7.8%
4.8%
CC
= 2.0V and F
Table 30-
Figure
488