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Future Technology Devices International Limited (FTDI) 

Unit1, 2 Seaward Place, Centurion Business Park, Glasgow G41 1HH United Kingdom 

Tel.: +44 (0) 141 429 2777    Fax: + 44 (0) 141 429 2758 

E-Mail (Support): 

support1@ftdichip.com

  Web: 

http://www.ftdichip.com

 

 

Neither the whole nor any part of the information contained in, or the product described in this manual, may be adapted or reproduced 
in  any  material  or  electronic  form  without  the  prior  written  consent  of  the  copyright  holder.  This  product  and  its  documentation  are 
supplied on an as-is basis and no warranty as to their suitability for any particular purpose is either made or implied. Future Technology 
Devices  International  Ltd  will  not  accept  any  claim  for  damages  howsoever  arising  as  a  result  of  use  or  failure  of  this  product.  Your 
statutory rights are not affected. This product or any variant of it is not intended for use in any medical appliance, device or system in 
which  the  failure  of  the  product  might  reasonably  be  expected  to  result  in  personal  injury.  This  document  provides  preliminary 
information that may be subject to change without notice. No freedom to use patents or other intellectual property rights is implied by 
the  publication  of  this  document.  .  Future  Technology  Devices  International  Ltd,  Unit1,  2  Seaward  Place,  Centurion  Business  Park, 
Glasgow, G41 1HH, United Kingdom. Scotland Registered Number: SC136640 

 

 

Copyright © 2009 Future Technology Devices International Limited 

 

The USB-RS232 adaptor cables are a family of communication devices from FTDI Ltd.  This model, 
US232R, provides a simple method of adapting legacy serial devices with RS232 interfaces to modern 
USB ports by incorporating the FTDI FT232R bridge chip. 

The US232R cable is available in two lengths 10cm (US232R-10) and 100cm (US232R-
100).  Indicator LEDs provide status of Transmit (TX) and Receive (Rx)

 

  

         

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FTDI Ltd 

DS_US232R-10(R-100)  

USB to RS232 Adapter

 

cable 

Data Sheet 

 

Document Reference No.: FT_000151  

Version 1.0 

Issue Date: 04-08-2009 

Summary of Contents for US232R-10

Page 1: ...y medical appliance device or system in which the failure of the product might reasonably be expected to result in personal injury This document provides preliminary information that may be subject to change without notice No freedom to use patents or other intellectual property rights is implied by the publication of this document Future Technology Devices International Ltd Unit1 2 Seaward Place ...

Page 2: ...10 2 1 2 Pre programmed EEPROM 10 2 1 3 Lower Operating and Suspend Current 10 2 1 4 Low USB Bandwidth Consumption 10 2 1 5 UART Pin Signal Inversion 10 2 1 6 FTDIChip ID 11 2 1 7 Improved EMI Performance 11 2 1 8 Programmable Receive Buffer Timeout 11 2 1 9 Baud Rates 11 3 Installation 12 3 1 RS232 Connection Pin Out 12 3 2 Device Driver Installation 13 3 2 1 Microsoft Windows 13 3 2 2 Mac OS X L...

Page 3: ... ADAPTER CABLE Data Sheet Version 1 0 Clearance No 99 7 Environmental Approvals Declarations 25 7 1 EMI Compatibility 25 7 2 Safety 25 7 3 Environmental 25 7 4 Reliability 25 8 Troubleshooting 26 8 1 Hardware 26 8 2 Device Driver 26 9 Contact Information 27 Appendix A List of Figures and Tables 28 Appendix B Revision History 29 ...

Page 4: ...sure capable of withstanding industrial temperature ranges The integrated electronics also include RS232 level shifters and TXD RXD LEDs to provide a visual indication of data traffic through the adapter The Cable incorporates a standard USB A device connector for connection to an upstream host or hub port RS232 level signals including modem handshake signals are available on an industry standard ...

Page 5: ...B to RS232 Converter Upgrading Legacy Peripherals to USB USB Audio and Low Bandwidth Video data transfer PDA to USB data transfer USB Smart Card Readers USB Instrumentation USB Industrial Control USB MP3 Player Interface USB FLASH Card Reader Writers Set Top Box PC USB interface USB Digital Camera Interface USB Hardware Modems USB Wireless Modems USB Bar Code Readers USB Software Hardware Encrypti...

Page 6: ...dows Vista x64 Windows XP x64 Windows Server 2003 x64 Windows Vista Windows XP Windows Server 2003 Windows 2000 Windows ME Windows 98 Linux Mac OS X Mac OS 9 Mac OS 8 Windows CE NET Version 4 2 and greater The drivers listed above are all available to download for free from the FTDI website Various 3rd Party Drivers are also available for various other operating systems see the FTDI website for de...

Page 7: ... lengths 10cm Part number US232R 10 and 100cm Part number US232R 100 FTDI FT232R The FTDI FT232R provides the USB to Serial conversion Operating system device drivers are required in order to work with the FT232R to provide the Virtual COM Port serial functionality RS232 Level Shifter The RS232 level shifter converts the signals provided by the FT232R into the voltage levels required by RS232 devi...

Page 8: ...play installation and RS 232 device connection Works with USB 1 1 2 0 Host and Hub ports Industry Standard FTDI chip set device drivers for maximum compatibility Microsoft Windows WHQL certified Mac OS X Linux and Windows CE device drivers Installs as a standard Windows COM port COM port number can be changed to any available COM port number including COM1 to COM4 to support HyperTerminal or any o...

Page 9: ... 12Mbps USB 2 0 Full Speed RS232 Interface Standard Windows baud rates 300bps to 921 6Kbps Custom baud rates 300bps to 1Mbps through baud rate aliasing See FTDI Application Note Configuring FT232R FT2232 and FT232BM Baud Rates Table 1 1 Performance Figures 1 7 Ordering Information Part Number Description US232R 10 USB RS232 Adapter Cable 10cm cable length US232R 100 USB RS232 Adapter Cable 100cm c...

Page 10: ...nal EEPROM is available for storing additional data The internal EEPROM is programmable in circuit over USB without any additional voltage requirement 2 1 2 Pre programmed EEPROM The FT232R is supplied with its internal EEPROM pre programmed with a serial number which is unique to each individual device This in most cases will remove the need to program the device EEPROM 2 1 3 Lower Operating and ...

Page 11: ...ease of PCB design requirements in order to meet FCC CE and other EMI related specifications 2 1 8 Programmable Receive Buffer Timeout The receive buffer timeout is used to flush remaining data from the receive buffer This time defaults to 16ms but is programmable over USB in 1ms increments from 1ms to 255ms thus allowing the device to be optimised for protocols that require fast response times fr...

Page 12: ...A Input Receive Asynchronous Data input 3 TXDATA Output Transmit Asynchronous Data output 4 DTR Output Data Terminal Ready control output Handshake signal 5 GND Gnd Device groud supply pin 6 DSR Input Data Set Ready control input Handshake signal 7 RTS Output Request To Send Control Output Handshake signal 8 CTS Input Clear to Send Control input Handshake signal 9 RI Input Ring Indicator control i...

Page 13: ...Administrator or a user with Administrator rights 2 Prior to connecting the US232R to the USB Host or Hub port download the latest device driver version from the FTDI web site 3 Run this executable to install the device drivers 4 Connect the US232R to your computer A notification will appear near the task bar indicating that new hardware has been installed and is ready for use It is normal if this...

Page 14: ... Internet speed 6 After the files are found and installed click Finish to complete the installation Figure 3 5 Complete Hardware Installation 7 Steps 2 through 6 will repeat The first time installs the basic USB Serial Converter in the USB device tree The second time installs the Virtual COM Port layer in the Ports tree and assigns the COM port number 8 When both portions of the device driver have...

Page 15: ...Ports tree to list the available COM port You will see FTDI USB COM Port followed by a COMn assignment In the figure below the US232R is assigned to COM3 Figure 3 8 COM Port Assignment Use this COM port number with your application software in order to access the US232R If an application requires use of a different COM port number the assignment may be changed through the Advanced Driver Options s...

Page 16: ...advanced settings Note the COM port assignment in the upper left Clicking on the drop down list will display the available port numbers Select one that is not in use and click OK on each dialog box to activate the selection Windows will remember this COM port number 3 2 2 Mac OS X Linux Windows CE Device drivers and FTDI installation guides for Mac OS X Linux and Windows CE are available for downl...

Page 17: ...positive polarity 4 Ground GND USB signal ground Shield Case Ground Drain typically connected to the host PC case Table 3 1 USB A Connector Pin Out 3 3 2 RS232 The RS232 port is configured as Data Terminal Equipment DTE with a 9 contact D Sub Pin connector Pin assignments are according to TIA EIA 574 which formally defines the assignments for a COM port found on many personal computers Pin Number ...

Page 18: ...mum Units Conditions USB_VCC Input Power Voltage 4 25 5 0 5 25 V Present when USB cable is attached and USB Host or Hub powered Icc USB current 30 50 mA Table 4 1 USB Electrical Details 4 2 RS232 Parameter Description Minimum Typical Maximum Units Conditions Vtrans Transmitter output voltage swing 5 V RL 3KΩ Vrec Receiver input voltage range 2 4 25 V Input resistance 3KΩ to 7KΩ ESD HBM 15 KV RS 23...

Page 19: ...y Devices International Limited 19 Document Reference No FT_000151 DS_US232R 10 R 100 USB TO RS232 ADAPTER CABLE Data Sheet Version 1 0 Clearance No 99 5 Mechanical Details 5 1 Module Mechanical Dimensions Figure 5 1 Cable Dimensions ...

Page 20: ...ght 2009 Future Technology Devices International Limited 20 Document Reference No FT_000151 DS_US232R 10 R 100 USB TO RS232 ADAPTER CABLE Data Sheet Version 1 0 Clearance No 99 Figure 5 2 Case top Dimensions ...

Page 21: ...ght 2009 Future Technology Devices International Limited 21 Document Reference No FT_000151 DS_US232R 10 R 100 USB TO RS232 ADAPTER CABLE Data Sheet Version 1 0 Clearance No 99 Figure 5 3 Case Base Dimensions ...

Page 22: ...yright 2009 Future Technology Devices International Limited 22 Document Reference No FT_000151 DS_US232R 10 R 100 USB TO RS232 ADAPTER CABLE Data Sheet Version 1 0 Clearance No 99 Figure 5 4 Cap Dimensions ...

Page 23: ...right 2009 Future Technology Devices International Limited 23 Document Reference No FT_000151 DS_US232R 10 R 100 USB TO RS232 ADAPTER CABLE Data Sheet Version 1 0 Clearance No 99 Figure 5 5 Lens Dimensions ...

Page 24: ...0151 DS_US232R 10 R 100 USB TO RS232 ADAPTER CABLE Data Sheet Version 1 0 Clearance No 99 6 Physical Environment Details 6 1 Operating Parameter Description Minimum Typical Maximum Units Conditions T Operating Temperature Range 20 80 o C 5 to 95 RH non condensing Table 6 1 Operating Temperature ...

Page 25: ...tructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures R...

Page 26: ... The default settings of the device driver assume typical data transfers of hundred to thousands or more bytes at a given time Some applications such as a GPS device only send data in short packets often only a few bytes If this is the case it may be necessary to adjust the drivers buffer size and or latency timer to smaller values These values can be adjusted through the Advanced driver options a...

Page 27: ...tw sales1 ftdichip com E mail Support tw support1 ftdichip com E mail General Enquiries tw admin1 ftdichip com Web Site URL http www ftdichip com Branch Office Hillsboro Oregon USA Future Technology Devices International Limited USA 7235 NW Evergreen Parkway Suite 600 Hillsboro OR 97123 5803 USA Tel 1 503 547 0988 Fax 1 503 547 0987 E Mail Support us support ftdichip com E Mail General Inquiries u...

Page 28: ...Installation 14 Figure 3 6 Hardware Ready 14 Figure 3 7 Device Manager 15 Figure 3 8 COM Port Assignment 15 Figure 3 9 Access COM Port Properties 15 Figure 3 10 Settings Tab 16 Figure 3 11 Advanced Options 16 Figure 5 1 Cable Dimensions 19 Figure 5 2 Case top Dimensions 20 Figure 5 3 Case Base Dimensions 21 Figure 5 4 Cap Dimensions 22 Figure 5 5 Lens Dimensions 23 List of Tables Table 1 1 Perform...

Page 29: ...national Limited 29 Document Reference No FT_000151 DS_US232R 10 R 100 USB TO RS232 ADAPTER CABLE Data Sheet Version 1 0 Clearance No 99 Appendix B Revision History Draft Initial Draft subject to change 07 07 2009 Rev 1 0 Initial Release 04 08 2009 ...

Page 30: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information FTDI US232R 10 BULK US232R 100 BLISTER US232R 100 BULK US232R 10 BLISTER US232R 500 BULK ...

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