7Semi FT234XD USB to UART Converter Module

The 7Semi USB to UART Converter Module combines the trusted FTDI FT234X USB-to-UART IC to deliver safe, robust communication between your PC and embedded systems.

With USB Type-C connectivity, support for baud rates up to 3 Mbps, this module is perfect for working with industrial electronics, noisy environments, and sensitive circuits.

It is plug-and-play on major operating systems thanks to FTDI’s VCP and D2XX drivers and is ideal for developers, hobbyists, and engineers who need both performance and protection.

Technical Specifications

USB Interface

• Controller: FTDI FT234X

• USB Standard: USB 2.0 Full Speed (12 Mbps)

• Connector: USB Type-C

UART Side

• Signal levels: 3.3V / 5V compatible (VCC selectable)

• Baud rate: 183 baud to 3 Mbps

• Pins: VCC, RX, TX, GND

General

• Supply Voltage: 3.3–5V (via USB)

• Drivers: FTDI VCP & D2XX (free download)

• Operating Temp: –40 °C to +85 °C (FT234X)

• Board size: ~21.09mm × 11.01 mm compact module

Applications

• Microcontroller programming/debugging (Arduino, STM32, ESP32, PIC, etc.)

• Industrial system communication w

• USB-to-UART in noisy environments

• RS232/RS485/RS422 front-end development with isolation

• Data logging and sensor interfacing

• Protecting PC/host from high-voltage transients

Package Includes

• 1 × 7Semi USB to UART Isolated Converter Module (FT234X , USB-C)

FAQ

Q1. What microcontrollers can I use with this board?
Any MCU with I²C support (Arduino, ESP32, STM32, Raspberry Pi).

Q2. What is the default I²C address?
The module responds at 0x39.

Q3. Can I measure near-infrared (NIR) light?
Yes, selected channels cover up to 1000 nm.

Q4. Is there a built-in light source?
Yes, the board has a user LED for reflectance measurements.

Q5. Does it require 5 V tolerance?
No — the board is 3.3 V only, use a level shifter for 5 V systems.

Resources

• FT234XD USB TO BASIC UART Datasheet