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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 copyright ? 20 10 future technology devices international limited 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 documentat ion 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 produ ct. your statutory rights are not affected. this product or any variant of it is not intended for us e 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 preliminar y information that may be subject to change without notice. no freedom to use paten ts 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 ? 2008 future technology devices international limited future technology devices international ltd usb to rs232 serial converter range of cables datasheet doc ument ref erence no. : ft_000077 version 1.3 issue date: 2009 - 1 2 - 1 8
copyright ? 20 10 future technology devices international limited 1 document reference no.: ft_000077 usb to rs232 serial converter range of cables datasheet version 1.3 clearance no.: ftdi# 51 1 description t he usb_rs232 cables are a family of usb to rs232 levels serial uart converter cable s incorporating ftdis ft232 rq usb to s erial uart interface ic dev ice which han dles all the usb signalling and protocols. the cables provide a fast, simple w ay to connect devices with a rs232 level serial uart interface to usb. each usb - rs232 cable contains a small internal electronic circuit board , utilis ing the ft232r , which is en capsulated in to the usb connector end of the cable. the ft232r datasheet, ds_ft232r , is available at http://www.ftdichip.com . the integrated elec tronics also include the rs232 level shifter plus tx and rx leds which give a visual indication of traffic on the cable (if transparent usb connector specified). the other end of the cable is bare, tinned wire ended connections by default, but can be custo mised using differen t connectors to support various applications . cables are fcc, ce, rohs compliant. the usb side of the cable is usb powered and usb 2.0 full speed compatible. each cable is 1.8 m long and supports a data transfer rate up to 1 mbaud . each cable supports the ftdichip - id?, with a unique usb serial number programmed into the ft232r . this feature can be used to create a security or password protected file transfer access using the cable . further information and examples on this feature a re available at http://www.ftdichip.com under ftdichip - id projects . the usb - rs232 cables require usb drivers, available free from http://www.ftdichip.com , whi ch are used to make the ft232r i n the cable appear as a virtual com port (vcp). this then allows the user to communicate with the usb interface via a standard pc serial emulation port ( for exa mple tty). another ftdi usb driver, the d2xx driver, can also be used with application software to directly access the ft232r on the cable though a dll. this is illustrated in the figure 1 . 1 figure 1 . 1 using the usb - rs232 cable v c p t t y u s b u s b _ r s 2 3 2 v i r t u a l c o m p o r t s o f t w a r e a p p l i c a t i o n a c c e s s t o u s b v i a d 2 x x u s b t t y d 2 x x d l l w i r e e n d e d c u s t o m i s e d c o n n e c t o r s v a r i o u s c o n n e c t o r o p t i o n s w i r e e n d e d v a r i o u s c o n n e c t o r o p t i o n s c u s t o m i s e d c o n n e c t o r s
copyright ? 20 10 future technology devices international limited 2 document reference no.: ft_000077 usb to rs232 serial converter range of cables datasheet version 1.3 clearance no.: ftdi# 51 2 cable part numbers the following table 2 . 1 gives details of the available usb - rs232 cables. part number description end connector* cable details usb - rs232 - we - 1800 - b t - 0.0 usb to uart cable with rs232 level uart signals. b lack cable, t ransparent usb connector 0.0 = red wire is 0v w ire e nded (no connector) 1.8m cable, 6 core, ul2464 24 awg, diam=5mm * usb - rs232 - cc - llll - cu - pwr usb to uart cable with rs232 level uart signals. c = cable colour ( b black or t transparent), u = usb connecto r colour ( b black or t transparent) pwr = power supply output on red wire. 0.0 = 0v, 3.3=3.3v,5.0=5v) cu = connector description. llll = length of cable. table 2 . 1 usb - rs232 cables descriptions and part numbers * ftdi supports customised end connector designs. for more information, please contact ftdi sales team (sales1@ftdichip.com) 2.1 certifications ftdi usb - rs232 range of cables are fully rohs compliant as well as ce and fcc certified .
copyright ? 20 10 future technology devices international limited 3 document reference no.: ft_000077 usb to rs232 serial converter range of cables datasheet version 1.3 clearance no.: ftdi# 51 table of content s 1 description ................................ ................................ ..................... 1 2 cable part numbers ................................ ................................ ........ 2 2.1 certifications ................................ ................................ ................................ . 2 3 typical applications ................................ ................................ ........ 4 3.1 driver support ................................ ................................ .............................. 4 3.2 features ................................ ................................ ................................ ........ 5 4 features of ft232r applicable to usb - rs232 cables ...................... 6 5 usb - rs232 - we - llll - cu ................................ ................................ . 7 5.1 usb - rs232 - we connections and mechanical details ................................ ..... 7 5.2 usb - rs232 - we cable signal descriptions ................................ ..................... 8 5.3 usb - rs232 - we electrical parameters ................................ ........................... 8 6 cable pcb circuit schematic ................................ ......................... 10 7 contact information ................................ ................................ ..... 11 appendix a - cable eeprom configuration ................................ ......... 12 appendix b - list of figures and tables ................................ .............. 13 appendix c - revision history ................................ ............................ 14
copyright ? 20 10 future technology devices international limited 4 document reference no.: ft_000077 usb to rs232 serial converter range of cables datasheet version 1.3 clearance no.: ftdi# 51 3 typical applications usb to s erial rs232 level c onverter . upgrading legacy p eripherals to usb . interface microcontroller uart or i/o to usb . interface fpga or pld to usb . u sb instrumentation pc interface . usb industrial c ontrol . usb password protected file transfers . 3.1 driver support royalty free virtual com port (vcp) drivers for... windows 98, 98se, me, 2000, server 2003, xp and server 2008 windows xp and xp 64 - bit windows vista and vista 64 - bit windows xp embedded windows ce 4.2, 5.0 and 6.0 mac os 8/9, os - x linux 2.4 and greater royalty free d2xx direct drivers (usb drivers + dll s/w interface) windows 98, 98se, me, 2000, server 2003, xp and server 2008 windows xp and xp 64 - bit windows vista and vista 64 - bit windows xp embedded windows ce 4.2, 5.0 and 6.0 linux 2.4 and greater mac os - x the drivers listed above are all available to download for free from www.ftdichip.com . various 3rd party drivers are also available for other operating systems - see www.ftdichip.com for details.
copyright ? 20 10 future technology devices international limited 5 document reference no.: ft_000077 usb to rs232 serial converter range of cables datasheet version 1.3 clearance no.: ftdi# 51 3.2 f ea t ures usb - rs232 converter c able provides a usb to rs232 s erial interface with customised end connectors. entire usb protocol handled by the electronics in the cable usb. eia/tia - 232 and v. 28/v.24 communication interface with low power requirements. uart interface support for 7 or 8 data bits, 1 or 2 stop bits and odd / even / mark / space / no parity. internal eeprom with user writeable area. ftdis royalty - free vcp allow for communicati on as a standard emulated com port and d2xx direct drivers provide dll application programming interface. visual indication of tx and rx traffic via leds in the transparent usb connector. fully assisted hardware (rts#/cts#) or x - on / x - off software hand shaking. data transfer rates from 300 baud to 1 mbaud . support for ft232r ftdichip - id? feature for improved security. low usb bandwidth consumption. uhci / ohci / ehci host controller compatible . usb 2.0 full speed compatible. - 40c to +85c operating temperature range. cable length is 1.80m (6 feet) . esd protection for rs - 232 i/o's 15kv human body model (hbm) 15kv en61000 - 4 - 2 air gap discharge 8kv en61000 - 4 - 2 contact discharge fcc and ce compliant. custom versions available on request (subject to moq).
copyright ? 20 10 future technology devices international limited 6 document reference no.: ft_000077 usb to rs232 serial converter range of cables datasheet version 1.3 clearance no.: ftdi# 51 4 features of ft232r applicable to usb - rs232 cables the usb - rs232 cables use ftdis ft232rq usb to serial uart ic device. this section summarises the key features of the ft232rq which apply to the usb - rs232 usb to serial rs232 converter cables. for further details, and a full features and enhancements description c onsult the ft232r datasheet.t his is available from www.ftdichip.com . internal eeprom. the internal eeprom in each cable is used to store usb vendor id (vid), product id (pid), device serial number, product description string and various other us b configuration descriptors. each cable is supplied with the internal eeprom pre - programmed as described in appendix a - cable eeprom configuration . the internal eeprom descriptors can be programmed in circuit, over usb without any additional voltage requirement. it can be programmed using t he ftdi utility software called mprog, which can be downloaded from ftdi utilities on the ftdi website ( www.ftdichip.com ). a dditionally, there is a user area of the internal eeprom available to system desig ners to allow storing of data (note that this is not modified by mprog) . lower operating and suspend current . the ft232r has a low 15ma operating supply current and a very low usb suspend current of approximately 70a. (note that during suspend mode, the current drawn by any customised cable application which uses the usb supply, should not exceed 2.5ma to remain usb compliant) low usb bandwidth consumption . the usb in terface of the ft232r , and therefore the usb - rs232 cables has been designed to use as little as possible of the total usb bandwidth available from the usb host controller. uart pin signal inversion . the sense of each of the uart signals can be individually inverted by configuring option s in the internal eeprom. for example cts# (active low) can be changed to cts (active high), or txd can be changed to txd#. ftdichip - id? . the ft232r includes the new ftdichip - id? security dongle feature. this ftdichip - id? fea ture allows a unique number to be burnt into each cable during manufacture. this number cannot be reprogrammed. this numb er is only readable over usb can be used to form the basis of a security dongle which can be used to protect any customer application software being copied. this allows the possibility of using the usb - rs232 cables as a dongle for software licensing. further to this, a renewable license scheme can be implem ented based on the ftdichip - id? number when encrypted with other information. this encrypted number can be stored in the user area of the ft232r internal eeprom, and can be decrypted, then compared with the protected ftdichip - id? to verify that a license i s valid. web based applications can be used to maintain product licensing this way. an application note, an232r - 02 , available from ftdi we bsite ( www.ftdichip.com ) describes this feature. improved emi performance . the usb - rs232 cables are fcc and ce certified. extended operating temperature range - the usb - rs232 cables are capable of operating over an ext ended temperature range of - 40o to +85o c thus allowing them to be used in automotive or industrial applications.
copyright ? 20 10 future technology devices international limited 7 document reference no.: ft_000077 usb to rs232 serial converter range of cables datasheet version 1.3 clearance no.: ftdi# 51 5 usb - rs232 - we - llll - cu - pwr the usb - rs232 - we cable is un - terminated ; it has bare and tinned wires . the llll specifies the length of the cable in cm. the cu specifies the colour of the cable and the colour of the usb connector. the cable can be either black or transparent. the usb connector can either be black or transparent. for simplicity, the llll and cu have been dropped from the following descriptions. 5.1 usb - rs232 - we - pwr connections and mechanical details the following figure 5 . 1 shows the cable signal s and the wire colours for the signals on the usb - rs232 - we cable . figure 5 . 1 usb - rs232 - we connections figure 5 . 2 usb - rs232 - we mechanical details (dimensions in mm) g n d c t s # p o w e r * t x d r x d r t s # 1 2 3 4 5 6 c a b l e 1 . 8 m o v o r + 3 . 3 v o r + 5 v ( d e f a u l t i s 0 v ) 1 2 3 4 5 6 b l a c k b r o w n r e d o r a n g e y e l l o w g r e e n p o w e r * - d e f a u l t i s g n d , b u t c a n b e m a n u f a c t u r e d t o p r o v i d e + 3 . 3 v o r + 5 v
copyright ? 20 10 future technology devices international limited 8 document reference no.: ft_000077 usb to rs232 serial converter range of cables datasheet version 1.3 clearance no.: ftdi# 51 5.2 usb - rs232 - we cable signal descriptions colour name type description black gnd gnd device ground supply pin. brown cts# input clear to send control input / handshake signal. red power output power output. default is gnd, but can be customised to output +3.3v or +5v. if required, contact ftdi sales team (sales1@ftdichip.com) orange txd output transmit asynchronous data output. yellow rxd input receive asynchronous data input. green rts# output request to send control output / handshake signal. table 5 . 1 usb - rs232 - we cable signal descriptions 5.3 usb - rs232 - we electrical parameters parameter description minimum typical maximum units conditions vcc _5v output power voltage * 4.25 5.0 * 5.25 v *default is gnd. this figure only applies when cable has been customised to output +5v. the range is d ependent on the usb port that the usb - rs232 - we is connected to vcc _3.3v output power voltage * * 3. 2 3.3* * 3. 4 v * * default is gnd. this figure only applies when cable has been customised to output +3.3 v. i o output power current *** - 75 ma ***only applies when power output is customised to +5v or+3.3v must be less that 2.5ma during suspend. t operating temperature range - 40 +85 o c table 5 . 2 usb - rs232 - we i/o operating parameters
copyright ? 20 10 future technology devices international limited 9 document reference no.: ft_000077 usb to rs232 serial converter range of cables datasheet version 1.3 clearance no.: ftdi# 51 parameter description minimum typical maximum units conditions v trans transmitter output voltage swing +/ - 5 +/ - 6.5 +/ - 15 v vrec receiver input voltage range - 25 +25 v table 5 . 3 usb - rs232 - we i/o pin characteristics description conditions minimum typical maximum esd hbm rs - 232 inputs and outputs 15 kv en61000 - 4 - 2contactdischarge rs - 232 inputs and outputs 8 kv en61000 - 4 - 2airgapdischarge rs - 232 inputs and outputs 15 kv table 5 . 4 usb - rs232 - we esd tolerance
copyright ? 20 10 future technology devices international limited 10 document reference no.: ft_000077 usb to rs232 serial converter range of cables datasheet version 1.3 clearance no.: ftdi# 51 6 cable pcb circuit schematic the circuit schematic for the small internal electronic circuit board, utilising the ftdi ft232r, which is encapsulated into the usb connector end of the cable , is shown in figure 6 . 1 . customised versions of the cable are also available. users interested in customised versions of these cables shou ld c ontact ftdi sales (sales1@ftdichip.com) . figure 6 . 1 circuit schematic of pcb used in the usb to rs232 serial converter cable 3 0 3 2 2 8 4 1 7 2 0 2 4 2 6 1 4 1 5 1 8 1 1 9 1 6 4 . 7 u f + f b 1 0 n f 1 2 3 4 5 4 7 p f x 2 u s b - d p u s b - d m r s 2 3 2 l e v e l s h i f t e r t x d r t s # r x d c t s # f t 2 3 2 r _ t x d f t 2 3 2 r _ r t s f t 2 3 2 r _ r x d f t 2 3 2 r _ c t s v c c f t 2 3 2 r q v c c _ 3 v 3 g n d g n d v c c v c c _ 3 v 3 o n l y 1 r e s i s t o r i s f i t t e d . d e f a u l t i s p o w e r = g n d p o w e r f t 2 3 2 r _ p w r e n # 2 2 f t 2 3 2 r _ s l e e p # 2 1 e n # s h u t d o w n # v c c c h a r g e p u m p c a p s 2 x 0 . 1 u f v c c 1 0 1 1 t x l e d r x l e d 1 0 0 n f 1 0 0 n f v + 4 7 0 n f v - 4 7 0 n f v c c u s b a p l u g g n d
copyright ? 20 10 future technology devices international limited 11 document reference no.: ft_000077 usb to rs232 serial converter range of cables datasheet version 1.3 clearance no.: ftdi# 51 7 contact information head office C glasgow, uk future technology devices international limited unit 1, 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 (sales) sales1@ftdichip.com e - mail (support) support1@ftdichip.com e - mail (general enquiries) admin1@ftdichip.com web site url http://www.ftdichip.com web shop url http://www.ftdichip.com branch office C taipei, taiwan future technology devices international limited (taiwan) 2f, no. 516, sec. 1, neihu road taipei 114 taiwan , r.o.c. tel: +886 (0) 2 8797 1330 fax: +886 (0) 2 8751 9737 e - mail (sales) 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 C hillsboro, oregon, usa future technology devices international l imited (usa) 7235 nw evergreen parkway, suite 600 hillsboro, or 97123 - 5803 usa tel: +1 (503) 547 0988 fax: +1 (503) 547 0987 e - mail (sales) us.sales@ftdichip.com e - mail (support) us.admin@ftdichip.com web site url http://www.ftdichip.com branch office C shanghai, china future technology devices international limited (china) room 408, 317 xianxia road, changning district, shanghai, china tel: +86 (21) 62351596 fax: +86 (21) 62351595 e - mail (sales): cn.sales@ftdichip.com e - mail (support): cn .support@ftdichip .com e - mail (general enquiries): cn. admin1@ftdichip.com web site url: http://www.ftdichip.com distributor and sales representatives please visit the sales network page of the ftdi web site for the contact details of our distributor(s) and sales representative(s) in your country.
copyright ? 20 10 future technology devices international limited 12 document reference no.: ft_000077 usb to rs232 serial converter range of cables datasheet version 1.3 clearance no.: ftdi# 51 appendix a - cable eeprom configuration each usb - rs232 cable is controlled by the ftdi ft232r ic. this ft232r device contains an eeprom which contains the usb configuration descri ptors for that device. when the cable is plugged into a pc or a usb reset is performed, the pc will read these descriptors. the default values stored into the intern al eeprom are defined in table 0 . 1 parameter value notes usb vendor id (vid) 0403h ftdi default vid (hex) usb product ud (pid) 6001h ftdi default pid (hex) serial number enabled? yes serial number see note a unique serial number is generated and programmed into the eeprom during device final test. pull down i/o pins in usb suspend disabled enabling this option will make the device pull down on the uart interface lines when the power is shut off (pwren# is high). manufacturer name ftdi product description see note usb - rs232 - we max bus power current 90ma power source bus powered device type ft232r usb version 0200 returns usb 2.0 device description to the host. note: the device is a usb 2.0 full speed device (12mb/s) as opposed to a usb 2.0 high speed device (480mb/s). remote wake up dis abled high current i/os en abled enables the high drive level on the uart and cbus i/o pins. load vcp driver en abled makes the device load the vcp driver interface for the device. invert txd disabled signal on this pin becomes txd# if enable. invert rxd disabled signal on this pin becomes rxd# if enable. invert rts# disabled signal on this pin becomes rts if enable. invert cts# disabled signal on this pin becomes cts if enable. table 0 . 1 default internal eeprom configuration the internal eeprom in the cable can be re - programmed over usb using the utility program mprog. mprog can be downloaded from the www.ftdichip.com . version 2.8a or later is required for the ft232r chip. users who do not have their own usb vendor id but who would like to use a unique product id in their design can apply t o ftdi for a free block of unique pids. contact ftdi support for this service.
copyright ? 20 10 future technology devices international limited 13 document reference no.: ft_000077 usb to rs232 serial converter range of cables datasheet version 1.3 clearance no.: ftdi# 51 appendix b - list of figures and tables list of figures figure 1.1 using the usb - rs232 cable ................................ ................................ ................................ ......... 1 figure 5.1 usb - rs232 - we connections ................................ ................................ ................................ ....... 7 figure 5.2 usb - rs232 - we mechanical details (dimensions in mm) ................................ ......................... 7 figure 6.1 circuit schematic of pcb us ed in the usb to rs232 serial converter cable ...................... 10 list of tables table 1.1 usb - rs232 cables descriptions a nd part numbers ................................ ................................ ... 2 table 5.1 usb - rs232 - we cable signal descriptions ................................ ................................ .................. 8 table 5.2 usb - rs232 - we i/o operating parameters ................................ ................................ ................... 8 table 5.3 usb - rs232 - we i/o pin characteristics ................................ ................................ ........................ 9 table 5.4 usb - rs232 - we esd tolerance ................................ ................................ ................................ ..... 9 table 0.1 default internal eeprom configuration ................................ ................................ ..................... 12
copyright ? 20 10 future technology devices international limited 14 document reference no.: ft_000077 usb to rs232 serial converter range of cables datasheet version 1.3 clearance no.: ftdi# 51 appendix c - revision history version draft first draft aug 2008 version 1 .0 first release september 12 th 2008 version 1.1 update to taiwan address october 1 st 2008 version 1.2 update to uk and tw address february 11 th 2009 changed front sheet picture. added additional part numbers version 1.3 changed tt to bt (transparent to black cable) december 18 st 2009

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