UMFT231XE-01 - FTDI - Datasheet.Live

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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

UMFT231XE is a USB to serial Full-Handshake UART DIP module with a 0.6” row pitch.

1 Introduction

The UMFT231XE 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 charger

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 are 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 UMFT231XE 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 UMFT231XE is fitted with a FT231XQ,

all the features of the FT231X can be

utilized with the UMFT231XE. For a full list

of the FT231X‟s features please see the

FT231X datasheet which can be found by

clicking here.

In addition to the features listed in the

FT231X datasheet, the UMFT231XE has the

following features:

 Small PCB assembly module designed to

fit a standard 15.24mm (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 variation of logic

reference levels.

UMFT231XE

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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 Configuration ........................................................................... 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 ROM ............................................................................ 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 – Revision History .............................................................................. 18

UMFT231XE

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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 D2XX 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 download 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 Information

Module Code

Utilised IC Code

Description

UMFT201XE-01

FT201XQ

USB to I2C 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.

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Document Reference No.: FT_000652 Clearance No.: FTDI# 294

4 UMFT231XE Signals and Configurations

4.1 UMFT231XE Pin Out

GND – J1-1

3V3OUT

VCCIO

DCD#

DSR#

DTR#

CTS#

RTS#

RXD

TXD – J1-10

J2-1 – SLD

VBUS

VCC

RI#

GND

RESET#

CBUS3

CBUS2

CBUS1

J2-10 – CBUS0

Figure 4.1 – Module Pin Out

Figure 4.1 illustrates the signals available on the DIP pins.

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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. For power supply configuration details

see Section 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 Section 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 Signal.

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 USB 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 applied to the USB

bus.

J2-3

VCC

Power

Input

5V power input for FT231X. For power supply configuration details see Section 5.

J2-4

RI#

Input

Ring Indicator Control Input. When remote wake up is enabled in the internal MTP

ROM taking RI# low >20ms can be used to 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

MTP 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

MTP 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

MTP 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

MTP ROM. See CBUS Signal Options,Table 4.2.

Table 4.1 – Module Pin Out Description

UMFT231XE

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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 MTP ROM using the utility software FT_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#

CBUS0-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 battery charging applications. UMFT231XE

connects all CBUS and DBUS signals an on-board 47K pull-up.

TXLED#

CBUS0-CBUS3

Transmit data LED drive – open drain pulses low when transmitting data via

USB.

RXLED#

CBUS0-CBUS3

Receive data LED drive – open drain pulses low when receiving data via USB.

TX&RXLED#

CBUS0-CBUS3

LED drive – open drain pulses low when transmitting or receiving data via USB.

SLEEP#

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

SLEEP# option for when connected to a dedicated charger port, this can be

selected when configuring the MTP ROM. When this option is enabled SLEEP# is

driven high when FT231X is connected to a Dedicated Charger Port.

CLK24MHz

CBUS0-CBUS3

24 MHz Clock output.**

CLK12MHz

CBUS0-CBUS3

12 MHz Clock output.**

CLK6MHz

CBUS0-CBUS3

6 MHz Clock output.**

GPIO

CBUS0-CBUS3

CBUS bit bang mode option. 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 MTP 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 Charge 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 output.

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 – CBUS Signal Options

**When in USB suspend mode the outputs clocks are also suspended.

UMFT231XE

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5 Module Configurations

5.1 Jumper Configuration Options

Jumper No.

Setting

Status

Description

JP1

Shorted

Default

Connects internal 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 allows 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 – Jumper JP1 Pin Description

Jumper No.

Setting

Status

Description

JP2

Shorted

Default

Connects VBUS to VCC. This mode is known as “USB-Powered” mode.

JP2

Opened

Non-

Default

Disconnects VBUS to VCC. This allows the supply of power from an external power

supply. This mode is known as “Self-Powered” mode.

Table 5.2 – 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 between two power supplies will be formed, this can

result in damage to the UMFT231XE module and the target circuit.

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Document Reference No.: FT_000652 Clearance No.: FTDI# 294

5.2 Bus Powered Configuration

GND

Jumper JP1 - Closed

GND

Jumper JP2- Closed

Alternative

connection

Alternative

connection

Current Flow

Bus Powered

Mode

Self-Sourced

3V3 TTL Mode

VCCIO

3V3OUT VBUS

VCC

Figure 5.1 – Bus Powered Configuration

A bus powered configuration draws its power from the USB host/hub. The UMFT231XE is configured by

default to be in bus powered mode.

Figure 5.1 illustrates the UMFT231XE module in a typical USB bus powered design 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)

+3.3V power is sourced from the FT231X‟s voltage regulator output and is connected to the FT231X IO

port‟s power input (VCCIO).

Interfacing the UMFT231XE module to a microcontroller (MCU), or other logic devices for bus powered

configuration is done the same way 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).

UMFT231XE

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5.3 Self Powered Configuration

MCU

Vcc = 1.8V – 3.3V

TXD

RXD

RTS#

CTS# GND

Vcc = 5V

TXD

RXD

RTS#

CTS#

Jumper JP2- Open

Jumper JP1 - Open

GND

Self Power

Mode

Variable TTL

Mode

VIO

VCCIO

3V3OUT VBUS

VCC

Figure 5.2 – Self-Powered Configuration

A self-powered configuration operates on the principle of drawing power from an 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 UMFT231XE 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 UMFT231XE

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 FT231X 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 UMFT231XE will override the effect of this 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

illustrates 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 in 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.

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5.4 USB Bus Powered with Power Switching Configuration

MCU

TXD

RXD

RTS#

CTS# GND

TXD

RXD

RTS#

CTS#

Jumper JP2 - Closed

Jumper JP1 - Closed

GND

s d

0.1uF 0.1uF

Soft

Start

Circuit

PWREN#

CBUSx

P-Channel Power

MOSFET

Bus Powered

Mode

Self-Sorced

3.3V TTL Mode

VCC

10K

VCCIO

3V3OUT VBUS

VCC

Figure 5.3 – Bus Powered with Power Switching Configuration

USB bus powered mode is introduced in Section 5.2. This section describes how to use bus-powered

mode with a power switch.

USB bus powered circuits are required by USB compliance standards to consume less than 2.5mA (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 resistor 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.

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5.5 Variable IO Voltage Supply

MCU

Vcc = 1.8V – 3.3V

TXD

RXD

RTS#

CTS# GND

TXD

RXD

RTS#

CTS#

Jumper JP2 - Closed

Jumper JP1 - Open

GND

VCCIO

3V3OUT VBUS

VCC

Figure 5.4 – 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 configuration 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 embedded 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 input 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 IOs will be at an unknown state,

this however will not damage the chip. The FT231X also has protective circuitry 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 (47K) to VCCIO on the data lines, all of the UMFT2xxXE devices include an on-board

pull-up for these lines.

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5.6 3.3V Voltage Supply

MCU

Vcc = 3.3V

TXD

RXD

RTS#

CTS# GND

TXD

RXD

RTS#

CTS#

Jumper JP2 - Open

Jumper JP1 - Closed

GND

Vcc = 3.3V

VCCIO

3V3OUT VBUS

VCC

Figure 5.5 – 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 configuration 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 MTP ROM. This can be used to configure the 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 MTP 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

enumerated is between 100mA and 500mA, for low-powered USB devices the current limit is

100mA.

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6 Module Dimensions

2.0

32.5

19.2

15.24

7.36

2.54

9.63

34.5

1.6

9.2

5.8

Figure 6.1 – UMFT231XE Module Dimensions

All dimensions are given in millimetres.

The UMFT231XE module exclusively uses lead free components, and is fully compliant with European

Union directive 2002/95/EC.

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Document Reference No.: FT_000652 Clearance No.: FTDI# 294

7 UMFT231XE Module Circuit Schematic

Figure 7.1 – Module Circuit Schematic

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8 Internal MTP ROM Configuration

Following a power-on reset or a USB reset the FT231X will scan its internal MTP ROM and read the USB

configuration descriptors stored there. The default values programmed into the internal MTP ROM in the

FT231XQ used on the UMFT231XE are shown in Table 8.1.

Parameter

Value

Notes

USB Vendor ID (VID)

0403h

FTDI default VID (hex)

USB Product UD (PID)

6015h

FTDI default PID (hex)

Serial Number Enabled?

Yes

Serial Number

See Note

A unique serial number is generated and programmed into

the MTP 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 high).

Manufacturer Name

FTDI

Product Description

UMFT231XE

Max Bus Power Current

90mA

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 (12Mb/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

Enabled

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 – Default Internal MTP ROM Configuration

The internal MTP ROM in the FT231X 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 (support1@ftdichip.com) for this service, also see TN_100 and

TN_101.

UMFT231XE

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9 Contact Information

Head Office – 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

Branch Office – 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 8791 3570

Fax: +886 (0) 2 8791 3576

E-mail (Sales)

tw.sales1@ftdichip.com

E-mail (Support)

tw.support1@ftdichip.com

E-mail (General Enquiries)

tw.admin1@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 (Sales)

us.sales@ftdichip.com

E-Mail (Support)

us.support@ftdichip.com

E-Mail (General Enquiries)

us.admin@ftdichip.com

Branch Office – Shanghai, China

Future Technology Devices International Limited (China)

Room 1103, No. 666 West Huaihai Road,

Shanghai, 200052

China

Tel: +86 (0)21 6235 1596

Fax: +86 (0)21 6235 1595

E-mail (Sales)

cn.sales@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 country.

System and equipment manufacturers and designers are responsible to ensure that their systems, and any Future Technology Devices 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 information 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 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. This document is subject to change

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of the information contained in, or the product described in this document, may be adapted or reproduced in any material or electronic form without the prior

written consent of the copyright holder. Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow G41

1HH, United Kingdom. Scotland Registered Company Number: SC136640

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 – Module Pin Out ........................................................................................................................... 4

Figure 5.1 – Bus Powered Configuration ...................................................................................................... 8

Figure 5.2 – Self-Powered Configuration ...................................................................................................... 9

Figure 5.3 – Bus Powered with Power Switching Configuration .............................................................. 10

Figure 5.4 – USB Bus Powered 3.3V Logic Drive ....................................................................................... 11

Figure 5.5 – USB Self Powered 3.3V Logic Drive ....................................................................................... 12

Figure 6.1 – UMFT231XE Module Dimensions ............................................................................................ 13

Figure 7.1 – Module Circuit Schematic ........................................................................................................ 14

List of Tables

Table 4.1 – Module Pin Out Description ........................................................................................................ 5

Table 4.2 – CBUS Signal Options ................................................................................................................... 6

Table 5.1 – Jumper JP1 Pin Description ....................................................................................................... 7

Table 5.2 – Jumper JP2 Pin Description ....................................................................................................... 7

Table 8.1 – Default Internal MTP ROM Configuration ................................................................................ 15

UMFT231XE

Version 1.0

Document Reference No.: FT_000652 Clearance No.: FTDI# 294

Appendix B – Revision History

Document Title: UMFT231XE

Document Reference No.: FT_000652

Clearance No.: FTDI# 294

Product Page: http://www.ftdichip.com/FT-X.htm

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Version 1.0 Initial Datasheet Created 12/06/12

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