ATmega3250 Atmel Corporation, ATmega3250 Datasheet - Page 312

• 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

29.3.0.1
29.4
2570N–AVR–05/11
Power-down Supply Current
Example
Calculate the expected current consumption in idle mode with USART0, TIMER1, and SPI
enabled at V
USART0, 9% for the SPI, and 4.8% for the TIMER1 module. From
idle current consumption is ~0.16mA at V
tion in idle mode with USART0, TIMER1, and SPI enabled, gives:
Figure 29-11. Power-down Supply Current vs. V
Figure 29-12. Power-down Supply Current vs. V
I
CC
total
3.5
2.5
1.5
0.5
≈
20
18
16
14
12
10
4
3
2
1
0
8
6
4
2
0
0.16mA
1.5
1.5
CC
•
= 3.0V and F = 1MHz.
(
2
2
1
+
0.085
2.5
2.5
+
0.09
+
0.048
3
3
)
Table 29-2
V
≈
V
CC
CC
CC
3.5
3.5
0.20mA
(V)
(V)
ATmega325/3250/645/6450
= 3.0V and F = 1MHz. The total current consump-
CC
CC
(Watchdog Timer Disabled)
(Watchdog Timer Enabled)
4
4
shows that we need to add 8.5% for the
4.5
4.5
Figure
5
5
29-6, we find that the
5.5
5.5
-40 °C
-40 °C
85 °C
25 °C
85 °C
25 °C
312