FT232RL-REEL

Controllers Overview

The FT232RL-REEL is a single-chip USB to asynchronous serial data transfer interface manufactured by FTDI. It handles the entire USB protocol internally, eliminating the need for specific firmware programming. The device features a 256-byte receive buffer and a 128-byte transmit buffer with smoothing technology. It supports UART interfaces with 7 or 8 data bits, 1 or 2 stop bits, and various parity options. Data rates range from 300 baud to 3 Megabaud at TTL levels. The component operates on a single power supply between 1.8V and 5.25V, with a maximum operating current of 25 mA. It is housed in a 28-pin SSOP package measuring 10.2mm x 5.3mm x 1.75mm.

Controllers Feature Summary

• Integrated USB protocol handling without external firmware requirements
• Configurable CBUS I/O pins and internal 1024-bit EEPROM storage
• Support for hardware and software handshaking protocols
• Optional clock generator outputs for external MCU or FPGA driving

Controllers Applications

• USB to UART bridge designs requiring high data throughput
• RS485 applications utilizing auto transmit buffer control
• Development boards and debuggers needing bit-bang modes
• Systems requiring integrated LED drive signals for status indication

Controllers Procurement Notes

Verify the specific suffix 'REEL' indicates tape and reel packaging when sourcing components. Confirm that the device is supplied preprogrammed with unique USB serial numbers and standard descriptors. Ensure compatibility with required operating system drivers, such as VCP or D2XX, for intended integration. Check for RoHS compliance and lead-free status if environmental regulations apply to the final assembly process.

Controllers Selection Notes

Select this component when a single-channel USB-to-UART solution is required without complex firmware development. Consider the FT232RL-REEL for designs needing configurable CBUS pins or specific clock output frequencies like 48MHz or 12MHz. Evaluate the 28-pin SSOP package constraints against available PCB space. Verify that the 256-byte receive buffer meets the throughput requirements of the target application.

Controllers Part Context

The FT232R series represents FTDI's approach to simplifying USB-to-serial conversions by integrating necessary circuitry onto a single chip. This model specifically targets applications requiring reliable asynchronous serial communication over USB. The inclusion of an internal EEPROM allows for customization of device identifiers and I/O configurations without external memory components.

Controllers Replacement Considerations

Direct replacements within the same family include other FT232R variants with different packaging options. Verify pin compatibility and electrical specifications before substituting with generic USB-to-UART controllers. Ensure any alternative component supports the required baud rates and buffer sizes for seamless integration.