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MM232R

MM232R

FTDI, Future Technology Devices International Ltd
FT232R - USB 2.0 to UART (RS232/RS422/RS485) Bridge Interface Evaluation Board
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Overview

The MM232R is a compact USB to UART development module built around the FT232R interface IC. It provides a complete hardware transition from USB 2.0 Full Speed to a serial UART interface, supporting data rates from 300 Baud up to 3 MBaud. The module is designed with a standard 0.1 inch pitch header, making it immediately compatible with breadboards and prototyping environments.

Why Choose This Part

The module simplifies design by integrating the clock generator, EEPROM, and USB termination resistors directly into the hardware. It features a unique Security ID number for hardware protection and offers flexible CBUS I/O pins that can be configured for LED status or bit-bang modes. Engineering time is further reduced by the availability of royalty-free VCP and D2XX drivers for all major operating systems.

Applications

USB to RS485/RS422 Gateway
Utilizing the integrated auto transmit buffer control to manage half-duplex RS485 differential signaling without external timing logic.
Legacy Peripheral Modernization
Retrofitting serial-based industrial equipment or instruments with a USB interface for modern PC connectivity.
Embedded System Debugging
Providing a high-speed serial console and bit-bang interface for firmware development and real-time monitoring.
USB Bus-Powered Control
Implementing small USB-powered controllers that require 5V to 1.8V logic level translation for low-power MCUs.

Key Specifications

Type Interface
Contents Board(s), Accessories
Embedded No
Function USB 2.0 to UART (RS232/RS422/RS485) Bridge
Primary Attributes Full Speed, Rates of 300 ~ 3MBaud, Security ID Number
Utilized IC / Part FT232R
Secondary Attributes 6 ~ 48MHz Clock Generator Output, Royalty-Free Drivers

Getting Started

To begin, plug the 16-pin module into a standard breadboard and connect a USB cable to the host PC. Install the FTDI Virtual COM Port (VCP) drivers to treat the device as a standard serial port in your terminal software. For advanced features like bit-bang mode or EEPROM customization, use the FTDI D2XX driver library and FT_Prog utility.

Also Consider

UM232R FTDI - Offers a larger 24-pin DIP format that provides access to all FT232R hardware pins for more complex interfacing.
TTL-232R-5V USB to UART Cable FTDI - Provides the same FT232R functionality integrated into a cable for direct connection to a target header.
CP2102N SiLSilicon Labs - A high-performance IC alternative if you are designing a custom PCB instead of using a pre-made module.

Categories

Connectors & Cables Displays & Optoelectronics