ATmega1280 Atmel Corporation, ATmega1280 Datasheet - Page 391

• Manufacturer Part Number: ATmega1280
• Manufacturer: Atmel Corporation

Specifications of ATmega1280

• Flash (kbytes): 128 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 86
• Ext Interrupts: 32
• Usb Speed: No
• Usb Interface: No
• Spi: 5
• Twi (i2c): 1
• Uart: 4
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 16
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 8
• Eeprom (bytes): 4096
• 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: 6
• Output Compare Channels: 16
• Input Capture Channels: 4
• Pwm Channels: 15
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

32.2.1.1
2549N–AVR–05/11
Example 1
Table 32-2.
It is possible to calculate the typical current consumption based on the numbers from
on page 390
Calculate the expected current consumption in idle mode with USART0, TIMER1, and TWI
enabled at V
add 17% for the USART0, 24% for the TWI, and 10% for the TIMER1 module. Reading from
ure 32-6 on page
= 1MHz. The total current consumption in idle mode with USART0, TIMER1, and TWI enabled,
gives:
I
CC
PRR bit
PRUSART3
PRUSART2
PRUSART1
PRUSART0
PRTWI
PRTIM5
PRTIM4
PRTIM3
PRTIM2
PRTIM1
PRTIM0
PRSPI
PRADC
total
≈
0.15mA
CC
for other V
Additional Current Consumption (percentage) in Active and Idle mode
•
= 2.0V and F = 1MHz. From
Additional Current consumption
compared to Active with external clock
3.0%
3.0%
3.0%
3.0%
4.4%
1.8%
1.8%
1.8%
4.3%
1.8%
1.5%
3.3%
4.5%
(
388, we find that the idle current consumption is ~0.15mA at V
1
+
0.17
CC
+
and frequency settings than listed in
0.24
+
ATmega640/1280/1281/2560/2561
0.10
)
≈
0.227mA
Table
32-2, third column, we see that we need to
Additional Current consumption
compared to Idle with external clock
17%
17%
17%
17%
24%
10%
10%
10%
23%
10%
8.0%
18%
24%
Table
32-2.
CC
= 2.0V and F
Table 32-1
Fig-
391