ATmega329 Atmel Corporation, ATmega329 Datasheet - Page 76

• 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

76
ATmega329/3290/649/6490
• XCK/AIN0/PCINT2 – Port E, Bit 2
XCK, USART0 External Clock. The Data Direction Register (DDE2) controls whether the clock is
output (DDE2 set) or input (DDE2 cleared). The XCK pin is active only when the USART0 oper-
ates in synchronous mode.
AIN0 – Analog Comparator Positive input. This pin is directly connected to the positive input of
the Analog Comparator.
PCINT2, Pin Change Interrupt Source 2: The PE2 pin can serve as an external interrupt source.
• TXD/PCINT1 – Port E, Bit 1
TXD0, UART0 Transmit pin.
PCINT1, Pin Change Interrupt Source 1: The PE1 pin can serve as an external interrupt source.
• RXD/PCINT0 – Port E, Bit 0
RXD, USART0 Receive pin. Receive Data (Data input pin for the USART0). When the USART0
Receiver is enabled this pin is configured as an input regardless of the value of DDE0. When the
USART0 forces this pin to be an input, a logical one in PORTE0 will turn on the internal pull-up.
PCINT0, Pin Change Interrupt Source 0: The PE0 pin can serve as an external interrupt source.
Table 13-16
shown in
Table 13-16. Overriding Signals for Alternate Functions PE7:PE4
Note:
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
1. CKOUT is one if the CKOUT Fuse is programmed
Figure 13-5 on page
and
PE7/PCINT7
0
0
CKOUT
1
CKOUT
clk
–
PCINT7 • PCIE0
1
PCINT7 INPUT
–
Table 13-17
I/O
(1)
(1)
relates the alternate functions of Port E to the overriding signals
65.
PE6/DO/
PCINT6
0
0
0
0
USI_THREE-
WIRE
DO
–
PCINT6 • PCIE0
1
PCINT6 INPUT
–
PE5/DI/SDA/
PCINT5
USI_TWO-WIRE
0
USI_TWO-WIRE
(SDA +
PORTE5) •
DDE5
USI_TWO-WIRE
• DDE5
0
0
(PCINT5 •
PCIE0) + USISIE
1
DI/SDA INPUT
PCINT5 INPUT
–
PE4/USCK/SCL/
PCINT4
0
(USI_SCL_HOL
D + PORTE4) •
DDE4
USI_TWO-WIRE
• DDE4
0
USITC
(PCINT4 •
PCIE0) + USISIE
1
USCKL/SCL
INPUT
PCINT4 INPUT
–
USI_TWO-WIRE
USI_TWO-WIRE
2552K–AVR–04/11