ATmega329 Atmel Corporation, ATmega329 Datasheet - Page 352

• Manufacturer Part Number: ATmega329
• Manufacturer: Atmel Corporation

Specifications of ATmega329

• Flash (kbytes): 32 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 54
• Ext Interrupts: 17
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Segment Lcd: 100
• 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

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ATmega329/3290/649/6490
Pin Thresholds and hysteresis
Figure 29-33. I/O Pin Input Threshold Voltage vs. V
Figure 29-34. I/O Pin Input Threshold Voltage vs. V
2.5
1.5
0.5
2.5
1.5
0.5
3
2
1
0
3
2
1
0
1.5
1.5
2
2
2.5
2.5
3
3
V
V
CC
CC
3.5
3.5
(V)
(V)
CC
CC
4
4
(V
(V
IH
IL
, I/O Pin Read as “0”)
, I/O Pin Read as “1”)
4.5
4.5
5
5
5.5
5.5
-40 °C
-40 °C
85 °C
25 °C
85 °C
25 °C
2552K–AVR–04/11