UB232R: USB to UART (RS-232) Bridge


The UB232R is the smallest USB – serial development module in the FTDI product range. To minimise the size of the module, the UB232R uses a standard USB mini-B connector. It is ideal for new development purposes as well as a platform for adding a USB interface to existing product designs.

The UB232R module is based on the FTDI FT232RQ USB to Serial UART IC which handles all the USB signalling and protocols. It supports data transfer rates from 300 baud to 3 Mbaud (RS422, RS485, RS232 and at TTL levels). In addition, two of the configurable CBUS pins of the FT232R are made available on the UB232R connector, allowing the UB232R to provide clock signals to external logic or they can be used to drive signal traffic indicator LEDs.

The UB232R requires USB drivers, available free from , which are used to make the FT232R on the UB232R appear as a virtual COM port (VCP).


Manufacturer FTDI, Future Technology Devices International Ltd
Category Wired Communication
Sub-Category Interface Solutions
Eval Board Part Number 768-1022-ND
Eval Board Supplier FTDI, Future Technology Devices International Ltd
Eval Board Normally In Stock
Purpose USB to RS-232
Component Count + Extras 7 + 4
Features Royalty-Free Drivers
Data Rate (Max) 300 bps ~ 3 Mbps (USB 2.0 Full Speed)
Design Author FTDI
Main I.C. Base Part FT232RQ
Date Created By Author
Date Added To Library 2011-10

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