ATmega3250 Atmel Corporation, ATmega3250 Datasheet - Page 311

• Manufacturer Part Number: ATmega3250
• Manufacturer: Atmel Corporation

Specifications of ATmega3250

• Flash (kbytes): 32 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: 69
• Ext Interrupts: 25
• 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: 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

29.3
2570N–AVR–05/11
Supply Current of I/O modules
Figure 29-10. Idle Supply Current vs. V
The tables and formulas below can be used to calculate the additional current consumption for
the different I/O modules in Active and Idle mode. The enabling or disabling of the I/O modules
are controlled by the Power Reduction Register. See
page 40
Table 29-1.
Table 29-2.
It is possible to calculate the typical current consumption based on the numbers from
for other V
PRR bit
PRADC
PRUSART0
PRSPI
PRTIM1
PRR bit
PRADC
PRUSART0
PRSPI
PRTIM1
35
30
25
20
15
10
5
0
1.5
for details.
CC
and frequency settings than listed in
Additional Current Consumption for the different I/O modules (absolute values)
Additional Current Consumption (percentage) in Active and Idle mode
Additional Current consumption
compared to Active with external
clock
(see
2
V
CC
17µA
10µA
5µA
9µA
Figure 29-1
= 2V, F = 1MHz
2.5
5.4%
2.7%
2.9%
1.5%
and
3
Figure
CC
V
CC
(32kHz External Oscillator)
3.5
V
Typical numbers
(V)
CC
116µA
59µA
62µA
33µA
29-2)
ATmega325/3250/645/6450
= 3V, F = 4MHz
Table
4
Additional Current consumption
compared to Idle with external
clock
(see
“PRR – Power Reduction Register” on
29-1.
Figure 29-6
4.5
V
16.8%
8.5%
9.0%
4.8%
CC
562µA
248µA
257µA
135µA
5
and
= 5V, F = 8MHz
Figure
5.5
-40 °C
85 °C
25 °C
29-7)
Table 29-2
311