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use of ftdi devices in life support and/or safety applications is entirely at the user?s risk, and the user agrees to defend, indemnify and hold harmless ftdi from any and all damages, claims, suits or expense resulting from such use. umft231xe version 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 future technology devices international ltd datasheet umft231xe usb to full - handshake uart development module umft231x e i s a usb to serial full - handshake uart dip module with a 0. 6 row pitch . 1 introduction the umft231x e is a development module for ftdi?s ft231xq, one of the devices from ftdi?s range of usb interface bridging integrated circuit devices. ft231x is a usb to uart interface with a battery charg er detection feature, which can allow batteries to be charged with a higher current from a dedicated charger port (without the ft231x being enumerated). in addition, asynchronous and synchronous bit bang interface modes a re available. the internally generated clock (6mhz, 12mhz and 24mhz) can be brought out of the on one of the cbus pin to be used to drive a microprocessor or external logic. the umft231x e is a module which is designed to plug into a standard 0. 6 wide 20 pin dip socket. all components used, including the ft231xq are pb - free (rohs compliant). 1.1 features the u mft 231x e is fitted with a ft231xq, all the features of the ft231x can be utilized with the umft231x e . for a full list of the ft231x?s features pleas e see the ft231x datasheet which can be found by clicking here . in addition to the features listed in the ft231x datasheet, the umft231x e has the following features: ? small pcb assembly module designed to fit a standard 15 . 24 mm (0. 6 ) wide 20 pin dip socket. pins are on a 2.54mm (0.1) pitch. ? on board usb ?mini - b? socket allows module to be connected to a pc via a standard a to mini - b usb cable. ? functionally configurable using jumpers. the default jumper setup enables the module to function without peripheral wires or application board . other configurations enable external power supply options and varia tion of logic reference levels.
2 copyright ? 2012 future technology devices international limited umft231xe vers ion 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 table of contents 1 introduction ................................ ................................ ................... 1 1.1 features ................................ ................................ ................................ ........ 1 2 driver support ................................ ................................ ................ 3 3 ordering information ................................ ................................ ..... 3 4 umft231xe signals and configurations ................................ ......... 4 4.1 umft231xe pin out ................................ ................................ ...................... 4 4.2 signal descriptions ................................ ................................ ....................... 5 4.3 cbus signal options ................................ ................................ ..................... 6 5 module configurations ................................ ................................ .... 7 5.1 jumper configuration options ................................ ................................ ....... 7 5.2 bus powered c onfiguration ................................ ................................ ........... 8 5.3 self powered configuration ................................ ................................ ........... 9 5.4 usb bus powered with power switching configuration .............................. 10 5.5 variable io voltage supply ................................ ................................ ......... 11 5.6 3.3v voltage supply ................................ ................................ .................... 12 5.7 configuring the mtp r om ................................ ................................ ............ 12 6 module dimensions ................................ ................................ ...... 13 7 umft231xe module circuit schematic ................................ .......... 14 8 internal mtp rom configuration ................................ .................. 15 9 contact information ................................ ................................ ..... 16 appendix a - list of figures and tables ................................ ................................ . 17 appendix b C revision history ................................ ................................ .............. 18
3 copyright ? 2012 future technology devices international limited umft231xe vers ion 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 2 driver support royalty - free virtual com port (vcp) drivers for: ? windows 7 32,64 - bit ? windows vista ? windows xp 32,64 - bit ? windows xp embedded ? windows ce.net 4.2 , 5.0 and 6.0 ? mac os os - x ? linux 3.0 and greater ? android royalty - free d2x x direct drivers (usb drivers + dll s/w interface): ? windows 7 32,64 - bit ? windows vista ? windows xp 32,64 - bit ? windows xp embedded ? windows ce.net 4.2, 5.0 and 6.0 ? mac os os - x ? linux 3.0 and greater ? android the drivers listed above are all available to down load for free from www.ftdichip.com . various 3rd party drivers are also available for various other operating systems - visit www.ftdichip.com for details. 3 ordering infor mation module code utilised ic code description umft201xe - 01 ft201xq usb to i 2 c evaluation module. 0.6 row pitch, standard dip headers. umft221xe - 01 ft221xq usb to 8 - bit spi/ft1248 evaluation module. 0.6 row pitch, standard dip headers. umft231xe - 01 ft231xq usb to full - handshake uart evaluation module. 0.6 row pitch, standard dip headers. umft240xe - 01 ft240xq usb to 8 - bit 245 fifo evaluation module. 0.6 row pitch, standard dip headers.
4 copyright ? 2012 future technology devices international limited umft231xe vers ion 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 4 umft231x e signals and configurations 4.1 umft231x e pin ou t figure 4 . 1 C module pin out figure 4.1 illustrates the signals available on the dip pins. g n d C j 1 - 1 3 v 3 o u t v c c i o d c d # d s r # d t r # c t s # r t s # r x d t x d C j 1 - 1 0 j 2 - 1 C s l d v b u s v c c r i # g n d r e s e t # c b u s 3 c b u s 2 c b u s 1 j 2 - 1 0 C c b u s 0
5 copyright ? 2012 future technology devices international limited umft231xe vers ion 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 4.2 signal descriptions pin no. name type description j1 - 1, j2 - 5 gnd pwr module ground supply pins j1 - 2 3v3out power input/ output 3.3v output from integrated l.d.o. regulator. this pin is decoupled with a 100nf capacitor to ground on the pcb module. the prime purpose of this pin is to provide the 3 .3v supply that can be used internally. f or power supply configuration details see s ection 5. j1 - 3 vccio power input +1.8v to +3.3v supply to the uart interface and cbus i/o pins. for power supply configuration details see s ection 5 . j1 - 4 dcd# input data carrier detect control input. j1 - 5 dsr# input data set ready control input / handshake signal. j1 - 6 dtr# output data terminal ready control output / handshake signal. j1 - 7 cts# input clear to send control input / handshake signal. j1 - 8 rts# output request to send control output / handshake s ignal. j1 - 9 rxd input receiving asynchronous data input. j1 - 10 txd output transmit asynchronous data output. j2 - 1 sld gnd usb cable shield. connected to gnd via a 0ohm resistor. j2 - 2 vbus power output 5v power output from the usb bus. for a low power u sb bus powered design, up to 100ma can be sourced from the 5v supply and applied to the usb bus. a maximum of 500ma can be sourced from the usb bus in a high power usb bus powered design. currents up to 1a can be sourced from a dedicated charger and applie d to the usb bus. j2 - 3 vcc power input 5v power input for ft231x. for power supply configuration details see s ection 5 . j2 - 4 ri# input ring indicator control input. when remote wake up is enabled in the internal mt p rom taking ri# low >20ms can be used t o resume the pc usb host controller from suspend. j2 - 6 reset# input ft231x active low reset line. configured with an on board pull - up and recommended filter capacitor. when no power is applied to the usb bus reset, will be held low, this prevents current from flowing to the host or hub when in self - powered mode. j2 - 7 cbus3 i/o configurable cbus i/o pin. function of this pin is configured in the device internal mt p rom. see cbus signal options, table 4 . 2 . j2 - 8 cbus2 i/o configurable cbus i/o pin. function of this pin is configured in the device internal mt p rom. see cbus signal options, table 4 . 2 . j2 - 9 cbus1 i/o configurable cbus i/o pin. function of this pin is configured in the device internal mt p rom. see cbus signal options, table 4 . 2 . j2 - 10 cbus0 i/o configurable cbus i/o pin. function of this pin is configured in the device internal mt p rom. see cbus signal options, table 4 . 2 . tab le 4 . 1 C module pin out description
6 copyright ? 2012 future technology devices international limited umft231xe vers ion 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 4.3 cbus signal options the following options can be configured on the cbus i/o pins. these options are all configured in the internal mt p rom using the utility software f t_prog, which can be downloaded from the www.ftdichip.com . the default configuration is described in section 9 . cbus signal option available on cbus pin description tristate cbus0 - cbus3 io pad is tri - stated drive _ 1 cbus0 - cbus3 output a constant 1 drive _ 0 cbus0 - cbus3 output a constant 0 txden cbus0 - cbus3 enable transmit data for rs485 pwren# cbu s0 - cbus3 output is low after the device has been configured by usb, then high during usb suspend mode. this output can be used to control power to external logic p - channel logic level mosfet switch. note: this function is driven by an open - drain to ground with no internal pull - up, this is specially designed to aid bat tery charging applications. umft231x e connects all cbus and dbus signals an on - board 47 k pull - up. txled# cbus0 - cbus3 transmit data led drive C open drain pulses low when transmitting data v ia usb. rxled# cbus0 - cbus3 receive data led drive C open drain pulses low when receiving data via usb. tx&rxled# cbus0 - cbus3 led drive C open drain pulses low when transmitting or rece iving data via usb. s leep # cbus0 - cbus3 goes low during usb suspend mode. typically used to power down an external logic to rs232 level converter ic in usb to rs232 converter designs. cancel s leep # option for when connected to a dedicated charger port, this can be selected when configuring the mt p rom. when this option is en abled sleep # is driven high when ft231x is connected to a dedicated charger port. clk24 mhz cbus0 - cbus3 24 mhz clock output.** clk12 mhz cbus0 - cbus3 12 mhz clock output.** clk6 mhz cbus0 - cbus3 6 mhz clock output.** gp io cbus0 - cbus3 cbus bit bang mode op tion. allows up to 4 of the cbus pins to be used as general purpose i/o. configured individually for cbus0, cbus1, cbus2 and cbus3 in the internal mt p rom. a separate application note, an232r - 01 , available from ftdi website ( www.ftdichip.com ) describes in more detail how to use cbus bit bang mode. bcd _charger cbus0 - cbus3 battery c harge detect indicates when the device is connected to a dedicated battery charger host. active high output. note: requires a 10k pull - down to remove power up toggling. bcd _charger # cbus0 - cbus3 active low bcd charger , driven by an open drain to ground with no internal pull - up (4.7k on board pull - up present) . bitbang_wr# cbus0 - cbus3 synchronous and asynchronous bit bang mode wr# strobe output. bitbang_rd# cbus0 - cbus3 synchronous and asynchronous bit bang mode rd# strobe outp ut. vbus _ sense cbus0 - cbus3 input to detect when vbus is present. time _ stamp cbus0 - cbus3 toggle signal which changes state each time a usb sof is received keep_awake# cbus0 - cbus3 active low input, prevents the chip from going into suspend. table 4 . 2 C cbus signal options **when in usb suspend mode the outputs clocks are also suspended.
7 copyright ? 2012 future technology devices international limited umft231xe vers ion 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 5 module configurations 5.1 jumper configuration options jumper no. setting status description jp1 shorted default connects inte rnal 3.3v regulator to vccio. this restricts signal drive to only 3.3v level signals. jp1 opened non - default disconnects internal 3.3v regulator connection to vccio. this mode allows for the supply of 1.8v - 3.3v power from an external power supply, thus al lows the processing of signals with logic levels between 1.8v and 3.3v. vccio can be adjusted to match the interface requirements of external circuitry. table 5 . 1 C jumper jp1 pin description jumper no. set ting status description jp2 shorted default connects vbus to vcc. this mode is known as usb powered mode. supply. this mode is known as self ed mode. table 5 . 2 C jumper jp2 pin description note: there should never be more than one power output supplied to the same net. if jp2 is fitted when an external power supply is applied a direct short bet ween two power supplies will be formed, this can result in damage to the umft231xe module and the target circuit.
8 copyright ? 2012 future technology devices international limited umft231xe vers ion 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 5.2 bus powered configuration figure 5 . 1 C bus p owered configuration a bus powered configuration draws its power from the usb host/hub. the umft231x e is configured by default to be in bus powered mode. figure 5 . 1 illustrates the umft231x e module in a typical usb bus powered des ign configuration. by default vccio is connected to 3v3out, and vcc is connected to vbus. for a bus power configuration power is supplied from the usb vbus : + 5v vbus power is sourced from the usb bus and is connected to the ft231x power input (vcc) + 3.3 v power is sourced from the ft231x?s voltage regulator output and is connected to the ft231x io port?s power input (vccio). interfacing the umft231x e module to a microcontroller (mcu), or other logic devices for bus powered configuration is done the same w ay as a self - powered configuration (see section 3 ), except it is possible for the mcu or external device to take its power supply from the usb bus (either the 5v from the usb pin, or 3.3v from the 3v3out pin). g n d j u m p e r j p 1 - c l o s e d g n d j u m p e r j p 2 - c l o s e d a l t e r n a t i v e c o n n e c t i o n a l t e r n a t i v e c o n n e c t i o n c u r r e n t f l o w b u s p o w e r e d m o d e s e l f - s o u r c e d 3 v 3 t t l m o d e v c c i o 3 v 3 o u t v b u s v c c
9 copyright ? 2012 future technology devices international limited umft231xe vers ion 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 5.3 self powered configuration figure 5 . 2 C self - powered configuration a self - powered configuration operates on the principle of drawing power from a n external power supply, as oppose to drawing power from the usb host. in this configuration no current is drawn from the usb bus. figure 5 . 2 illustrates the umft231x e in a typical usb self - powered configuration. in this case the jumper connection of jp1 is removed, which allows 5v power to be supplied to the module vcc pins from an external source . vccio can to be powered from 3v3out or the vcc of an external source . for a self - powered configuration, it is necessary to prevent current from flowing back to the usb data lines when the connected usb host or hub has powered down. to carry out this function the umft231x e uses an on - board voltage divider network connected to the usb bus and reset# pin. this operates on the principle that when no power is supplied to the vbus line , the f t231x will automatically be held in reset by a weak pull - down , when power is applied the voltage divider will apply a weak 3.3v pull - up . driving a level to the reset# pin of the umft231x e will override the effect of th is voltage divider. when the ft231x is in reset the usb dp signal pull - up resistor connected to the data lines is disconnected and no current can flow down the usb lines. an example of interfacing the ft231x with a microcontroller?s uart interface is also illustrated in figure 5 . 2 . this example shows the wire configuration of the transfer and handshake lines. this example also illustrate s that a voltage other than 3.3v can be supplied to the ft231x?s io port, this feature is described further and for bus powered mode i n section 5.5 . alternatively, both the ft231x?s io port and mcu can be powered from the 3v3out pin; this approach is described in section 5.4 . m c u v c c = 1 . 8 v C 3 . 3 v t x d r x d r t s # c t s # g n d v c c = 5 v t x d r x d r t s # c t s # j u m p e r j p 2 - o p e n j u m p e r j p 1 - o p e n g n d s e l f p o w e r m o d e v a r i a b l e t t l m o d e v i o v c c i o 3 v 3 o u t v b u s v c c
10 copyright ? 2012 future technology devices international limited umft231xe vers ion 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 5.4 usb bus powered with power switching c onfiguration figure 5 . 3 C bus powered with power switching configuration usb bus powered mode is introduced in section 5.2 . t his section describe s how to use bus - powered mode with a power switch. usb b us p owered circuits are required by usb compliance standards to consume less than 2.5m a (and less than 100ma when not enumerated and not suspended) when connected to a host or hub when in usb suspend mode. the pwren# cbus function can be used to remove power from external circuitry whenever the ft231x is not enumerated. to implement a power switch using pwren#, configure a p - channel power mosfet to have a soft start by fitting a 10k pull - up, a 1k series re sistor and a 100nf cap as shown in figure 5 . 3 . connecting the source of the p - channel mosfet to 3v3out instead of vbus can allow external logic to source 3.3v power from the ft231x without breaking usb compliancy. in this setup it is important that the vccio is not sourced from the drain of this mosfet, this is because the power used to drive the gate of this transistor is sourced from vccio. vccio should be connected directly to 3v3out for this setup to function effectively. it is also important that the external logic must and io core of the ft231x must not draw more that 50ma, this is because the current limit of the internal 3.3v regulator is 50ma. m c u t x d r x d r t s # c t s # g n d t x d r x d r t s # c t s # j u m p e r j p 2 - c l o s e d j u m p e r j p 1 - c l o s e d g n d s d g 1 k 0 . 1 u f 0 . 1 u f s o f t s t a r t c i r c u i t p w r e n # c b u s x p - c h a n n e l p o w e r m o s f e t b u s p o w e r e d m o d e s e l f - s o r c e d 3 . 3 v t t l m o d e v c c 1 0 k v c c i o 3 v 3 o u t v b u s v c c 5 v
11 copyright ? 2012 future technology devices international limited umft231xe vers ion 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 5.5 variable io voltage supply figure 5 . 4 C usb bus powered 3.3v logic drive the ft231x can process signals at cmos /ttl logic levels in the range of 1.8v to 3.3v. this section describes how to utilise this feature. figure 5 . 4 shows a con figuration where the ft231x is interfaced to a device with ios operating in the range of 1.8v - 3.3v. the io ports of this module need to be powered with a voltage level that is equal to the level of the signals it is processing. since the ft231x?s embedde d voltage regulator only outputs 3v3 the io ports will need to be powered from another power source when operating at voltage levels other than 3.3v. by default, a short is present between 3v3out (embedded voltage regulator) and vccio (io port?s power inp ut with the connection made by jp1 . if an external power supply is used to power the io ports this jumper needs to be open. the configuration described in this section can be implemented in either bus - powered mode or self - powered mode. note 1: the cbus and dbus pins are 5v tolerant; however these signals cannot drive signals at 5v ttl/cmos. vccio is not 5v tolerant; applying 5v to vccio will damage the chip. note 2 : if power is applied to vccio and no power is applied to vcc all io s will be at an unknown state, this however will not damage the chip. the ft231x also has protective ci rcuitry to prevent the chip being damaged by a voltage discrepancy between vccio and the level of the signal being processed . note 3 : when using vccio less than 3v3 on a chip from ftdi?s x - chip range, it is recommended to use pull up resistors (47 k ) to vccio on the dat a lines, all of the umft2xxx e devices include an on - board pull - up for these lines. m c u v c c = 1 . 8 v C 3 . 3 v t x d r x d r t s # c t s # g n d t x d r x d r t s # c t s # j u m p e r j p 2 - c l o s e d j u m p e r j p 1 - o p e n g n d v c c i o 3 v 3 o u t v b u s v c c
12 copyright ? 2012 future technology devices international limited umft231xe vers ion 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 5.6 3.3v voltage supply figure 5 . 5 C usb self powered 3.3v logic drive the ft231x can be powered from a single 3.3v supply. this feature is an alternative to having the ft231x powered at 5v in standard self - powered configuration. the 3.3v self powered co nfiguration is illustrated in figure 5 . 5 . note that the 3.3v input is connected to vcc, vccio and 3v3out. 5.7 configuring the mtp rom the ft231x contains an embedded mt p rom . this can be used to configure t he functions of each cbus pin , the current drive on each signal pin, current limit for the usb bus and the other descriptors of the device. for details on using the mtp rom/eeprom programming utility ft_prog, please see the ft_prog user guide. when programming the mtp rom please note : i) one of the cbus pins can be configured as pwren# in the internal mt p rom . this can be used to switch the power supply to the external circuitry. ii) the max bus power setting of the mtp rom should specify the maximum current to be drawn from the usb host/hub when enumerated. for high - powered usb devices the current limit when enumerate d is between 100ma and 500ma, for low - powered usb devices the current limit is 100ma. m c u v c c = 3 . 3 v t x d r x d r t s # c t s # g n d t x d r x d r t s # c t s # j u m p e r j p 2 - o p e n j u m p e r j p 1 - c l o s e d g n d v c c = 3 . 3 v v c c i o 3 v 3 o u t v b u s v c c
13 copyright ? 2012 future technology devices international limited umft231xe vers ion 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 6 module dimensions figure 6 . 1 C umft231x e module dimensions all dimensions are given in milli metres. the umft231x e module exclusively uses lead free components, and is fully compliant with european union directive 2002/95/ec. 2 . 0 3 2 . 5 1 9 . 2 1 5 . 2 4 7 . 3 6 2 . 5 4 9 . 6 3 3 4 . 5 1 . 6 9 . 2 5 . 8
14 copyright ? 2012 future technology devices international limited umft231xe vers ion 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 7 umft231x e module circuit schematic figure 7 . 1 C module circuit schematic
15 copyright ? 2012 future technology devices international limited umft231xe vers ion 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 8 internal mt p rom configuration following a power - on reset or a usb reset the ft231x will scan its internal mt p rom and read the usb configuration descriptors stored there. the default values programmed into the internal mt p ro m in the ft231xq used on the umft231x e are shown i n table 8.1. parameter value notes usb vendor id (vid) 0403h ftdi default vid (hex) usb product ud (pid) 601 5 h ftdi default pid (hex) serial number enabled? yes serial number see note a unique serial number is generated and programmed into the mt p rom during final test of the um232r module. 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 hi gh). manufacturer name ftdi product description umft231x e max bus power current 9 0ma power source bus powered device type ft231x usb version 0200 returns usb 2.0 device description to the host. note: the device is a usb 2.0 full speed device (12 mb/s) as opposed to a usb 2.0 high speed device (480mb/s). remote wake up enabled taking ri# low will wake up the usb host controller from suspend. high current i/os disabled enables the high drive level on the uart and cbus i/o pins. load vcp driver en abled makes the device load the cvp driver interface for the device. cbus0 gpio cbus1 gpio cbus2 gpio cbus3 gpio invert uart disabled signal on this pin becomes txd# if enable. table 8 . 1 C default in ternal mt p rom configuration the internal mt p rom in the ft23 1x can be programmed over usb using the utility program ft_prog. ft_ prog can be downloaded from the www.ftdichip.com . 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 to ftdi for a free block of unique pids. contact ftdi support (s upport 1@ftdi chip.com) for this service , also see tn_100 and tn_101 .
16 copyright ? 2012 future technology devices international limited umft231xe vers ion 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 9 contact information head office C glasgow, uk future technology devices international limited unit 1, 2 seaward place, centurion business park glasgow g 41 1hh united kingdom te l: +44 (0) 141 429 2777 fax: +44 (0) 141 429 2758 e - mail (sales) sales 1 @ftdichip.com e - mail (support) support 1 @ftdichip.com e - mail (general enquiries) admin1@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) 2 879 1 3570 fax: +886 (0) 2 87 9 1 3576 e - mail (sales) tw.sales1@ftdichip.com e - mail (support) tw.support1@ftdichip.com e - mail (general enquiries) tw.ad min1@ftdichip.com branch office C 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 (sales) us.sales@ftdichip.com e - mail (support) us.support@ftdichip.com e - mail (general enquiries) us.admin@ftdichip.com branch offic e C shanghai , china future technology devices international limited ( china ) room 1103, no. 666 west huaihai road, shanghai, 200052 china tel: +8 6 (0)21 6235 1596 fax: +86 (0)21 6235 1595 e - mail (sales) cn.sa les@ftdichip.com e - mail (support) cn.support@ftdichip.com e - mail (general enquiries) cn.admin@ftdichip.com web site http ://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 count ry. system and equipment manufacturers and designers are responsible to ensure that their systems, and any future technology devi ces international ltd (ftdi) devices incorporated in their systems, meet all applicable safety, regulatory and system - level performance requirements. all application - related information in this document (including application descriptions, suggested ftdi devices and other materials) is provided for reference only. while ftdi has taken care to assure it is accurate, this i nformation is subject to customer confirmation, and ftdi disclaims all liability for system designs and for any applications assistance provided by ftdi. use of ftdi devices in life support and/or safety applications is entirely at the u sers risk, and the user agrees to defend, indemnify and hold harmless ftdi from any and all damages, claims, suits or expense resulting from such use. this doc ument is subject to change without notice. no freedom to use patents or other intellectual property rights is impli ed by the publication of this document. neither the whole nor any part of the information contained in, or the product described in this document, may be adapted or reproduced in any material or e lectronic form without the prior written consent of the copy right holder. future technology devices international ltd, unit 1, 2 seaward place, centurion business park, glasgow g41 1hh, united kingdom. scotland registered company number: sc136640
copyright ? 2011 future technology devices inte rnational limited 17 umft231xe version 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 appendix a - list of figures and tables list of figures figure 4.1 C module pin out ................................ ................................ ................................ ........................... 4 figure 5.1 C bus powered configuration ................................ ................................ ................................ ...... 8 figure 5.2 C self - powered configuration ................................ ................................ ................................ ...... 9 figure 5.3 C bus powered with power switching configuration ................................ .............................. 10 figure 5.4 C usb bus powered 3.3v logic drive ................................ ................................ ....................... 11 figure 5.5 C usb self powered 3.3v logic drive ................................ ................................ ....................... 12 figure 6.1 C umft231xe module dimensions ................................ ................................ ............................ 13 figure 7.1 C module circuit schematic ................................ ................................ ................................ ........ 14 list of tables table 4.1 C module pin out description ................................ ................................ ................................ ........ 5 table 4.2 C cbus signal options ................................ ................................ ................................ ................... 6 table 5.1 C ju mper jp1 pin description ................................ ................................ ................................ ....... 7 table 5.2 C jumper jp2 pin description ................................ ................................ ................................ ....... 7 table 8.1 C default internal mtp rom configuration ................................ ................................ ................ 15
copyright ? 2011 future technology devices inte rnational limited 18 umft231xe version 1.0 document reference no.: ft_000652 clearance no.: ftdi# 294 appendix b C revi sion history document title: umft231x e document reference no.: ft_000652 clearance no.: ftdi# 294 product page: http://www.ftdichip.com/ft - x.htm document feedback: send feedback version 1.0 initial da tasheet created 12/06 /12

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