Arduino Nano FTDI pinout
Click any pin label to view functions, aliases and electrical notes.
Show datasheet advanced pin functions
Arduino Nano-compatible
Arduino Nano FTDI Pinout Reference
A static reference page for an Arduino Nano-compatible FTDI board, including common pins, power rails, communication interfaces, and datasheet references.
30Pins
5VLogic
ATmega328PMain MCU
Pin index
Pin index
Quickly scan every header pin, port name, supported function and usage note.
| Pin | MCU pin | Types | Notes |
|---|---|---|---|
| D13 | PB5 | GPIO SPI LED | Digital pin 13. SPI SCK and usually connected to the built-in LED. |
| 3.3V | 3V3 | Power | Regulated 3.3V rail for low-current peripherals and sensors. |
| REF | AREF | Analog | Analog reference input used by the ADC when an external reference is selected. |
| A0 | PC0 | Analog GPIO | Analog input with 10-bit ADC resolution. It can also be used as digital GPIO. |
| A1 | PC1 | Analog GPIO | Analog input A1. Can also be used as digital GPIO. |
| A2 | PC2 | Analog GPIO | Analog input A2. Can also be used as digital GPIO. |
| A3 | PC3 | Analog GPIO | Analog input A3. Can also be used as digital GPIO. |
| A4 | PC4 | Analog I2C GPIO | Analog input A4 and I2C data line when using the Wire library. |
| A5 | PC5 | Analog I2C GPIO | Analog input A5 and I2C clock line when using the Wire library. |
| A6 | ADC6 | Analog | Analog-only input available on Nano-style boards. |
| A7 | ADC7 | Analog | Analog-only input available on Nano-style boards. |
| 5V | 5V | Power | Main regulated 5V rail used by the board logic and many modules. |
| RST | !RESET | GPIO Internal | Reset line. Pull low momentarily to restart the microcontroller. |
| GND | GND | GND | Common electrical ground reference for the board and connected devices. |
| VIN | VIN | Power | Voltage input pin used to feed the onboard regulator from an external supply. |
| D12 | PB4 | GPIO SPI | Digital GPIO and SPI MISO line used to receive data from SPI peripherals. |
| D11 | PB3 | GPIO SPI PWM | Digital GPIO, SPI MOSI line and PWM-capable output. |
| D10 | PB2 | GPIO SPI PWM | Digital GPIO, SPI slave-select line and PWM-capable output. |
| D9 | PB1 | GPIO PWM | Digital GPIO with PWM output support. |
| D8 | PB0 | GPIO | General-purpose digital I/O pin. |
| D7 | PD7 | GPIO | General-purpose digital I/O pin. |
| D6 | PD6 | GPIO PWM | Digital GPIO with PWM output support. |
| D5 | PD5 | GPIO PWM | Digital GPIO with PWM output support. |
| D4 | PD4 | GPIO | General-purpose digital I/O pin. |
| D3 | PD3 | GPIO PWM | Digital GPIO with PWM output and external interrupt support. |
| D2 | PD2 | GPIO | Digital GPIO with external interrupt support. |
| GND | GND | GND | Common electrical ground reference for the board and connected devices. |
| RST | !RESET | GPIO Internal | Reset line. Pull low momentarily to restart the microcontroller. |
| RX0 | PD0 | GPIO UART | UART receive pin connected to the USB serial interface on many Nano-compatible boards. |
| TX1 | PD1 | GPIO UART | UART transmit pin connected to the USB serial interface on many Nano-compatible boards. |
Recommended parts
Recommended parts
Boards, cables and modules commonly used with Arduino Nano FTDI projects.
Amazon Board
Arduino Nano compatible board
A compact ATmega328P board for breadboard prototypes and permanent embedded projects.
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AliExpress Budget
Nano V3.0 compatible development board
Cost-effective Nano-compatible boards for workshops, classrooms and multi-board projects.
View offer →
Amazon Cable
Mini USB cable
USB cable for programming and powering Mini USB Nano FTDI-style boards.
View offer →
AliExpress Modules
I2C sensor modules pack
Sensor modules for testing the A4/SDA and A5/SCL I2C bus.
View offer →
Disclosure: some product links may be sponsored or affiliate links. We may earn a commission at no additional cost to you.
References
Datasheets
Manufacturer references for the main controller, USB bridge, and common regulator variants.
| Chip | Role | Manufacturer | Notes | Link |
|---|---|---|---|---|
ATmega328P | Microcontroller | Microchip | Main AVR MCU used on Nano-compatible boards. | Datasheet |
FT232RL / FTDI bridge | USB serial bridge | FTDI | Common USB-to-serial interface on FTDI variants. | Datasheet |
AMS1117 or equivalent | Voltage regulator | Multiple | Regulator varies by board clone/vendor. | Datasheet |
Related
Power rails
Check 5V, 3.3V, VIN, and GND before connecting external modules.
Related
Serial buses
SPI, I2C, and UART share pins with general-purpose digital IO.
Related
Board variants
Nano-compatible boards may use FTDI, CH340, or CP2102 USB serial bridges.