ATmega3290A Atmel Corporation, ATmega3290A Datasheet - Page 429

• Manufacturer Part Number: ATmega3290A
• Manufacturer: Atmel Corporation

Specifications of ATmega3290A

• Flash (kbytes): 32 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 69
• Ext Interrupts: 32
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Segment Lcd: 160
• 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: No
• Crypto Engine: No
• Sram (kbytes): 2
• Eeprom (bytes): 1024
• 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: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

30.3.3.1
8284D–AVR–6/11
Example 1
ATmega169A/PA/329A/PA/3290A/PA/649A/P/6490A/P
are controlled by the Power Reduction Register. See
page 46
Table 30-5.
Table 30-6.
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 USART0, TIMER1, and SPI
enabled at V
add 13.1% for the USART0, 13.0% for the SPI, and 13.2% for the TIMER1 module. Reading
from
1MHz. The total current consumption in idle mode with USART0, TIMER1, and SPI enabled,
gives:
PRR bit
PRADC
PRUSART0
PRSPI
PRTIM1
PRLCD
PRR bit
PRADC
PRUSART0
PRSPI
PRTIM1
PRLCD
Figure
for details.
CC
30-6, we find that the idle current consumption is ~0.09 mA at V
CC
and frequency settings than listed in
ATmega329A: Additional Current Consumption for the different I/O modules
(absolute values)
ATmega329A: Additional Current Consumption (percentage) in Active and Idle
mode
= 3.0V and F = 1MHz. From
Additional Current consumption
compared to Active with external clock
(see
Typical numbers
7µA
6.6µA
7µA
7.3µA
6.9µA
V
Figure 30-1
CC
I
CC
= 2V, F = 1MHz
total
≈
0.09mA
and
3.2%
3.4%
3.3%
3.4%
3.5%
Figure
•
(
1
+
0.131
30-2)
Table
44µA
43.5µA
47µA
47µA
48µA
V
CC
+
Table
30-2, second column, we see that we need to
0.13
= 3V, F = 4MHz
+
”PRR – Power Reduction Register” on
30-1.
Additional Current consumption
compared to Idle with external clock
(see
0.132
Figure 30-6
)
≈
0.13mA
195µA
210µA
205µA
206µA
215µA
13.1%
13.0%
13.2%
12.7%
13.7%
and
V
CC
Figure
CC
= 5V, F = 8MHz
= 3.0V and F =
30-7)
Table 30-2
429