아두이노 나노 pinout / atmega328p

얘네는 디지털 핀 쪽

Serial: 0 (RX) and 1 (TX). Used to receive (RX) and transmit (TX) TTL serial data.

        These pins are connected to the corresponding pins of the FTDI USB-to-TTL Serial chip.

External Interrupts: 2 and 3. These pins can be configured to trigger an interrupt on a low value,

                      a rising or falling edge, or a change in value. See the attachInterrupt() function for details.

PWM: 3, 5, 6, 9, 10, and 11. Provide 8-bit PWM output with the analogWrite() function.

SPI: 10 (SS), 11 (MOSI), 12 (MISO), 13 (SCK). These pins support SPI communication, which,

      although provided by the underlying hardware, is not currently included in the Arduino language.

LED: 13. There is a built-in LED connected to digital pin 13. When the pin is HIGH value, the LED is on,

           when the pin is LOW, it's off.

얘는 아날로그 핀 쪽

I2C: A4 (SDA) and A5 (SCL). Support I2C (TWI) communication using the Wire library

      (documentation on the Wiring website).

[링크 : https://www.arduino.cc/en/Main/ArduinoBoardNano]

[링크 : https://www.arduino.cc/en/uploads/Main/ArduinoNanoManual23.pdf]

일단.. I2C는 1채널뿐이군

SPI: 2 TWI (I2C): 1 UART: 1 ADC Channels: 8 ADC Resolution (bits): 10 ADC Speed (ksps): 15 Temp. Sensor: Yes SRAM (kBytes): 2 EEPROM (Bytes): 1024 Self Program Memory: Yes Timers: 3

[링크 : http://www.atmel.com/devices/atmega328p.aspx]