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FT232RL-REEL

FT232RL-REEL

FTDI, Future Technology Devices International Ltd
USB Bridge, USB to UART USB 2.0 UART Interface 28-SSOP

Overview

The FT232RL-REEL is a highly integrated USB-to-UART bridge controller that simplifies the implementation of USB connectivity in embedded systems. It handles the entire USB protocol on-chip, eliminating the need for complex USB-specific firmware development. With an integrated clock generator and EEPROM, it requires minimal external components to provide a full asynchronous serial data transfer interface.

Why Choose This Part

The device features a fully integrated clock circuit, requiring no external crystal, and an internal 1024-bit EEPROM for storing USB VID, PID, and serial numbers. It supports a wide supply voltage range from 3.3V to 5.25V and includes royalty-free Virtual Com Port (VCP) drivers that simplify software integration across Windows, macOS, and Linux.

Applications

Legacy Peripheral Upgrades
Converting existing RS-232 or RS-422/RS-485 designs to USB by replacing the level shifter or adding a bridge.
Microcontroller Debugging
Providing a reliable serial console interface for firmware debugging and bootloading via a standard USB port.
USB Dongles
Creating compact USB-to-serial converters for industrial automation, instrumentation, and field service tools.
Smart Card Readers
Implementing USB-based smart card interfaces using the integrated bit-bang modes and configurable CBUS pins.

Key Specifications

Function Bridge, USB to UART
Protocol USB
Interface UART
Standards USB 2.0
Package / Case 28-SSOP (0.209", 5.30mm Width)
Current - Supply 15mA
Voltage - Supply 3.3V ~ 5.25V
Operating Temperature -40degC ~ 85degC
Supplier Device Package 28-SSOP

Getting Started

To begin development, download the FTDI VCP or D2XX drivers from the official website. The chip is often used with the UM232R development module for rapid prototyping on a breadboard. Ensure proper decoupling capacitors are placed near the VCC and VCCIO pins as per the datasheet recommendations.

Part of FTDI FT232 / FT2232 family » FT232RL

FT232RL Family

Also available as: FT232RL-TUBE, FT232RL

Also Consider

CP2102N SiLSilicon Labs - A more modern, cost-effective alternative with a smaller footprint and higher data rates.
CH340G WCH - A very low-cost USB-to-UART solution widely used in hobbyist electronics and high-volume consumer goods.
MCP2221A MCHPMicrochip - Offers both USB-to-UART and USB-to-I2C/SMBus bridges in a single package.