ATMEGA328-AU Atmel, ATMEGA328-AU Datasheet - Page 487
![IC MCU AVR 32K FLASH 32TQFP](/photos/6/91/69154/313-32-tqfp_sml.jpg)
ATMEGA328-AU
Manufacturer Part Number
ATMEGA328-AU
Description
IC MCU AVR 32K FLASH 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA328-AU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP, 32-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA328-AU
Manufacturer:
SAMSUNG
Quantity:
15 000
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29.7.3.1
8271C–AVR–08/10
Example
Table 29-14. 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
29-336 on page
= 1MHz. The total current consumption in idle mode with TIMER1, ADC, and SPI enabled, gives:
I
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
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
509, 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
506
507)
and
Figure 29-331 on page
Figure 29-330 on page
1.4%
3.0%
3.3%
2.7%
0.9%
2.9%
4.1%
Table
≈
0.069 mA
29-14, third column, we see that we need to add
Table
Additional Current consumption
compared to Idle with external
clock (see
509
509)
and
29-14.
Figure 29-336 on page
Figure 29-335 on page
16.6%
17.8%
14.5%
15.7%
22.1%
7.8%
4.8%
CC
= 2.0V and F
Table 29-
Figure
487
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