ATmega168P Atmel Corporation, ATmega168P Datasheet - Page 352

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ATmega168P

Manufacturer Part Number
ATmega168P
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATmega168P

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
Yes
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

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Example
30.2.4
352
ATmega48P/88P/168P
Power-down Supply Current
Table 30-4.
It is possible to calculate the typical current consumption based on the numbers from
on page 351
Calculate the expected current consumption in idle mode with TIMER1, ADC, and SPI enabled
at V
to add 17.0% for the TIMER1, 17.6% for the ADC, and 17.5% for the SPI module. Reading from
Figure 30-52 on page 349
and F = 1MHz. The total current consumption in idle mode with TIMER1, ADC, and SPI enabled,
gives:
Figure 30-57. Power-Down Supply Current vs. V
PRR bit
PRTIM1
PRTIM0
PRSPI
PRADC
CC
= 2.0V and F = 1MHz. From
1.8
1.6
1.4
1.2
0.8
0.6
0.4
0.2
2
1
0
for other V
1.5
Additional Current Consumption (percentage) in Active and Idle mode
Additional Current consumption
compared to Active with external
clock (see
346
347)
2.8%
0.8%
3.0%
2.9%
and
I
2
CC
CC
, we find that the idle current consumption is ~0.055 mA at V
total
Figure 30-48 on page
and frequency settings than listed in
Figure 30-47 on page
0.055 mA (1 + 0.170 + 0.176 + 0.175)
2.5
Table 30-4 on page
3
V
CC
3.5
(V)
CC
(Watchdog Timer Disabled).
Additional Current consumption
compared to Idle with external
clock (see
349
349)
17.0%
4.6%
17.5%
17.6%
4
351, third column, we see that we need
and
Figure 30-53 on page
4.5
Table 30-3 on page
Figure 30-52 on page
0.084 mA
5
5.5
-40 °C
85 °C
25 °C
8025M–AVR–6/11
351.
Table 30-4
CC
= 2.0V

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