FT232RL USB to TTL 3.3V/5V FTDI Serial Adapter Module

FT232RL USB to TTL 3.3V/5V FTDI Serial Adapter Module provides a simple and reliable way to connect USB ports to UART interfaces. Developers use it for programming microcontrollers, debugging serial devices, and bridging communication between PCs and embedded systems. With selectable 3.3 V and 5 V logic levels, it fits a wide range of projects without requiring additional converters.

Key Features:

• Dual Voltage Support: Works with both 3.3 V and 5 V logic levels, selectable by jumper.
• FT232RL Chipset: Industry-standard FTDI USB-to-UART controller ensures stable data transfer.
• Plug-and-Play USB Interface: No extra drivers needed on most modern operating systems.
• High-Speed Communication: Supports baud rates up to 1 Mbps.
• Built-In Protection: Includes resettable fuse, ESD protection, and over-current safeguards.
• Standard Pinout: Compatible with Arduino, ESP8266, ESP32, and other serial-based modules.

Technical Specifications:

• Chipset: FT232RL (FTDI)
• Logic Voltage Levels: Selectable 3.3 V or 5 V (jumper configurable)
• Operating Voltage: USB 5 V input
• Baud Rate: 300 bps to 1 Mbps
• Communication Protocol: USB 2.0 full speed to UART serial
• Drivers: Supported on Windows, Linux, macOS (FTDI VCP drivers)
• Current Consumption: Typically < 20 mA during idle

Mechanical Specifications:

• Module Type: USB to TTL serial adapter board
• Connector: Standard USB Type-A male plug
• Headers: 6-pin 0.1″ male header for serial connections
• PCB Material: FR-4 with solder mask and silkscreen
• Mounting: Compact board suitable for breadboard or jumper-wire connections

Dimensions:

• Length: ~36 mm
• Width: ~17 mm
• Thickness: ~6 mm (including USB connector)
• Pin Pitch: 2.54 mm (0.1″) standard spacing

Pinout and Wiring:

• DTR: Data Terminal Ready – often used for auto-reset on Arduino boards
• RXD: Receive Data – connects to TX pin of target device
• TXD: Transmit Data – connects to RX pin of target device
• VCC: Selectable 3.3 V or 5 V output (configurable)
• CTS: Clear To Send – optional hardware flow control
• GND: Ground reference
• Wiring Note: Match RX to TX and TX to RX when connecting. Ensure the correct logic level before powering the target device.

Datasheet Reference:

• For detailed electrical parameters and driver installation, refer to the official FTDI FT232RL datasheet and application notes.

Applications:

• Arduino Programming: Upload sketches to Arduino Pro Mini or other boards without native USB.
• ESP8266/ESP32 Development: Flash firmware and monitor serial output from Wi-Fi modules.
• Debugging Serial Devices: Connect to GPS modules, GSM modems, or sensors with UART output.
• PC-to-Microcontroller Communication: Establish direct serial communication for testing and control.

Equivalent Models:

• CP2102 USB to TTL: Silicon Labs alternative with similar functionality
• CH340G Adapter: Cost-effective USB-to-UART module
• PL2303HX Module: Legacy USB serial bridge commonly used in older devices

Package Includes:

• 1 x FT232RL USB to TTL 3.3V/5V FTDI Serial Adapter Module
• 1 x Jumper for voltage selection