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WSAL11324 – FT232 USB UART Board (micro)/en

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Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

Summary

The FT232 USB UART Board (micro) is a Waveshare module that converts a USB interface to TTL levels. It uses an FTDI FT232 chip and enables serial communication between a PC and TTL devices such as microcontrollers or sensors via a micro-USB connector.

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Technical overview

  • Type: USB-to-UART-TTL module with a micro-USB connector
  • Power supply: 5 V; TTL level switchable between 3.3 V and 5 V via jumper cap
  • Maximum baud rate: up to 3 Mbit/s (FT232RNL)
  • Supported operating systems: Windows 7/8/8.1/10/11, macOS, Linux, Android
  • Pinout (upper row): VCCIO, GND, TXD, RXD
  • Pinout (lower row): 5V, GND, CTS#, RTS#
  • Additional signal lines: RI#, DCD#, DTR#, DSR#, RESET#, CBUS0–CBUS4
  • Operating range: temperature -15 °C to 70 °C, humidity 5 % RH to 95 % RH
  • Wiring logic: the module's TXD connects to the MCU's RX, and the module's RXD connects to the MCU's TX

Commands and examples – verify before use:  

lsusb
ls /dev/ttyUSB*
sudo minicom -D /dev/ttyUSB0

Notes and version constraints

  • The exact driver files for Windows, macOS, and Android must be obtained from the official FTDI site; the source references external links that cannot be reproduced here.
  • Steps for pinning a fixed COM port are version-dependent (Windows 10/11); the exact UI may vary by system version.
  • When powering external devices at 3.3 V, insufficient supply current can cause blinking TXD/RXD indicators; resolution requires opening the FTDI programming tool to enable a strengthened 3.3 V supply current – this step requires human confirmation.
  • Overvoltage, overcurrent, electrostatic discharge, extreme temperatures, or electromagnetic interference can damage the FT232 chip; appropriate protective measures are required.
  • The source notes the presence of knock-offs on the market; authenticity should be verified when purchasing from non-official stores.

Source and revision record

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