UM232H-B - FUTURE TECHNOLOGY DEVICES INTERNATIONAL

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, Unit 1, 2 Seaward Place, Centurion Business Park,

Glasgow, G41 1HH, United Kingdom. Scotland Registered Number: SC136640

UM232H-B Datasheet

Version 1.3

Document Reference No.: FT_000721 Clearance No.: FTDI# 320

Future Technology

Devices

International Ltd

Datasheet

UM232H-B USB to

Serial/Parallel Break-Out

Module

UM232H-B is a multiple-interface Hi-Speed USB to UART, 245 FIFO,

FT1248, I2C, SPI and GPIO break-out module.

1 Introduction

The UM232H-B is a development module for FTDI’s

FT232H Hi-Speed to Serial/Parallel interface

converter. This single interface channel IC can be

configured to transfer data over the following

interfaces UART, 245 FIFO, FT1248, I2C, SPI and

GPIO.

For detail on FT232H, refer to the FT232H

datasheet.

1.1 Features

This hardware is a breakout board that converts Hi-

Speed USB2.0 to a serial/parallel interface and

connects the signals to a 2.00mm pitch 18pin

female receptacle. No USB connector is used,

instead this modules plugs directly into the USB

host connector and the pads of the PCB makes

electrical contact with the electrical contacts of the

host USB connector.

All signals on these modules operate at +3.3V

voltage levels, however all I/Os are 5V tolerant.

UM232H-B Datasheet

Version 1.3

Document Reference No.: FT_000721 Clearance No.: FTDI# 320

2 Driver Support

Royalty-Free VIRTUAL COM PORT (VCP)

DRIVERS for:

 Windows 10 32,64-bit

 Windows 8 and 8.1 32,64-bit

 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 10 32,64-bit

 Windows 8 and 8.1 32,64-bit

 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. Third Party Drivers

are also available for other operating systems - visit www.ftdichip.com for details.

UM232H-B Datasheet

Version 1.3

Document Reference No.: FT_000721 Clearance No.: FTDI# 320

Table of Contents

1 Introduction .................................................................... 1

1.1 Features .................................................................................... 1

2 Driver Support ................................................................ 2

3 Ordering Information ...................................................... 4

4 UM232H-B Signals and Configurations ............................ 5

4.1 UM232H-B Pin Out .................................................................... 5

4.2 UM232H-B Signals .................................................................... 6

4.3 CBUS Signal Options ................................................................. 7

4.4 Configuring the EEPROM ........................................................... 8

5 Module Dimensions ......................................................... 9

6 UM232H-B-WE Wire Colours .......................................... 10

7 UM232H-B Module Circuit Schematic ............................. 11

8 Internal MTP ROM Configuration ................................... 12

9 Contact Information ...................................................... 13

Appendix A – References ................................................... 14

Document References ..................................................................... 14

Acronyms and Abbreviations ........................................................... 14

Appendix B – List of Figures and Tables ............................. 15

List of Figures ................................................................................. 15

List of Tables ................................................................................... 15

Appendix C – Revision History ........................................... 16

UM232H-B Datasheet

Version 1.3

Document Reference No.: FT_000721 Clearance No.: FTDI# 320

3 Ordering Information

Module Code

Utilised IC Code

Description

UM232H-B

FT232H

Single Channel USB to Serial/Parallel interface break-out board, with a

female header.

UM232H-B-NC

FT232H

Single Channel USB to Serial/Parallel interface break-out board, with

solder pads only.

UM232H-B-WE

FT232H

Single Channel USB to Serial/Parallel interface break-out board, with 6”

flying leads connected to the signal pads.

Table 3.1 – Ordering Information

UM232H-B Datasheet

Version 1.3

Document Reference No.: FT_000721 Clearance No.: FTDI# 320

4 UM232H-B Signals and Configurations

4.1 UM232H-B Pin Out

Figure 4.1 – Module Pin Out

Figure 4.1 illustrates the signals available on the signal pads. The top figure shows the pinout when the

module is viewed from the top side. The bottom figure shows the pinout when the module is viewed from

the bottom side.

Note: Take care when plugging module into a deep recessed USB port, it may damage component C1.

UM232H-B Datasheet

Version 1.3

Document Reference No.: FT_000721 Clearance No.: FTDI# 320

4.2 UM232H-B Signals

A list of all the pins and signals are given in Table 4.2. The EEPROM configuration determines the signal

assigned to a pin.

Pins marked * are EEPROM selectable

Table 4.1 – List of the Modules Signals

Pins marked ** default to tri-stated inputs with an internal 75KΩ (approx.) pull up resistor to VCCIO.

Pin marked *** default to GPIO line with an internal 75KΩ pull down resistor to GND. Using the EEPROM

this pin can be enabled USBVCC mode instead of GPIO mode.

FT232H

Pin functions (depends on configuration)

#

Name

ASYNC

Serial

(RS232)

SYNC

245 FIFO

STYLE

ASYNC

245 FIFO

ASYNC

Bit-bang

SYNC

Bit-bang

MPSSE

Fast Serial

interface

CPU Style

FIFO

FT1248

13

ADBUS0

TXD

D0

TCK/SK

FSDI

D0

MIOSI0

14

ADBUS1

RXD

D1

TDI/DO

FSCLK

D1

MIOSI1

15

ADBUS2

RTS#

D2

TDO/DI

FSDO

D2

MIOSI2

16

ADBUS3

CTS#

D3

TMS/CS

FSCTS

D3

MIOSI3

17

ADBUS4

DTR#

D4

GPIOL0

**

TriSt-UP

D4

MIOSI4

18

ADBUS5

DSR#

D5

GPIOL1

**

TriSt-UP

D5

MIOSI5

19

ADBUS6

DCD#

D6

GPIOL2

**

TriSt-UP

D6

MIOSI6

20

ADBUS7

RI#

D7

GPIOL3

**

TriSt-UP

D7

MIOSI7

21

ACBUS0

*

TXDEN

RXF#

ACBUS0

GPIOH0

**

ACBUS0

CS#

SCLK

25

ACBUS1

**

ACBUS1

TXE#

WRSTB#

GPIOH1

**

ACBUS1

A0

SS_N

26

ACBUS2

**

ACBUS2

RD#

RDSTB#

GPIOH2

**

ACBUS2

RD#

MISO

27

ACBUS3

*

RXLED#

WR

ACBUS3

GPIOH3

**

ACBUS3

WR

ACBUS3

28

ACBUS4

*

TXLED#

SIWU#

GPIOH4

SIWU#

ACBUS4

29

ACBUS5

**

ACBUS5

CLKOUT

ACBUS5

**

ACBUS5

**

ACBUS5

GPIOH5

**

ACBUS5

**

ACBUS5

30

ACBUS6

**

ACBUS6

OE#

ACBUS6

GPIOH6

**

ACBUS6

**

ACBUS6

31

ACBUS7

PWRSAV#

***

GPIOH7

PWRSAV#

32

ACBUS8

**

ACBUS8

**

ACBUS8

**

ACBUS8

**

ACBUS8

**

ACBUS8

**

ACBUS8

**

ACBUS8

**

ACBUS8

33

ACBUS9

**

ACBUS9

**

ACBUS9

**

ACBUS9

**

ACBUS9

**

ACBUS9

**

ACBUS9

**

ACBUS9

**

ACBUS9

UM232H-B Datasheet

Version 1.3

Document Reference No.: FT_000721 Clearance No.: FTDI# 320

The following 2 tables provide a description of the signals available on each pin of the UM232H module

Pin No.

IC Port

Name

PCB

Port

Name

Type

Description

CN2-1

ADBUS0

D0

Input/Output

EEPROM configurable data transfer pin

CN2-2

ADBUS1

D1

Input/Output

EEPROM configurable data transfer pin

CN2-3

ADBUS2

D2

Input/Output

EEPROM configurable data transfer pin

CN2-4

ADBUS3

D3

Input/Output

EEPROM configurable data transfer pin

CN2-5

ADBUS4

D4

Input/Output

EEPROM configurable data transfer pin

CN2-6

ADBUS5

D5

Input/Output

EEPROM configurable data transfer pin

CN2-7

ADBUS6

D6

Input/Output

EEPROM configurable data transfer pin

CN2-8

ADBUS7

D7

Input/Output

EEPROM configurable data transfer pin

CN2-9

ACBUS0

C0

Input/Output

EEPROM configurable control Pin, See Table 4.3

CN2-10

ACBUS1

C1

Input/Output

EEPROM configurable control Pin, See Table 4.3

CN2-11

ACBUS2

C2

Input/Output

EEPROM configurable control Pin, See Table 4.3

CN2-12

ACBUS3

C3

Input/Output

EEPROM configurable control Pin, See Table 4.3

CN2-13

ACBUS4

C4

Input/Output

EEPROM configurable control Pin, See Table 4.3

CN2-14

ACBUS5

C5

Input/Output

EEPROM configurable control Pin, See Table 4.3

CN2-15

ACBUS6

C6

Input/Output

EEPROM configurable control Pin, See Table 4.3

CN2-16

ACBUS7

C7

Input/Output

EEPROM configurable control Pin, See Table 4.3

CN2-17

-

5V

Power

5V power output, 500mA limit, protected by a 750mA fuse.

CN2-18

GND

Ground

Module Ground

Table 4.2 – Module Pin Out Description

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 8.

ACBUS

Signal

Option

Available On ACBUS Pin

Description

TXDEN

ACBUS0, ACBUS1, ACBUS2, ACBUS3,

ACBUS4, ACBUS5, ACBUS6, ACBUS8,

ACBUS9

TXDEN = (TTL level). Used with RS485 level converters to

enable the line driver during data transmit. TXDEN is

active from one-bit time before the start bit is transmitted

on TXD until one bit time after the last stop bit.

*PWREN#

ACBUS0, ACBUS1, ACBUS2, ACBUS3,

ACBUS4, ACBUS5, ACBUS6, ACBUS8,

ACBUS9

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. Enable the interface pull-down

option when using the PWREN# in this way.*

TXLED#

ACBUS0, ACBUS1, ACBUS2, ACBUS3,

ACBUS4, ACBUS5, ACBUS6, ACBUS8,

ACBUS9

TXLED = Transmit signalling output. Pulses low when

transmitting data (TXD) to the external device. This can

be connected to an LED.

RXLED#

ACBUS0, ACBUS1, ACBUS2, ACBUS3,

ACBUS4, ACBUS5, ACBUS6, ACBUS8,

ACBUS9

RXLED = Receive signalling output. Pulses low when

receiving data (RXD) from the external device. This can be

connected to an LED.

UM232H-B Datasheet

Version 1.3

Document Reference No.: FT_000721 Clearance No.: FTDI# 320

ACBUS

Signal

Option

Available On ACBUS Pin

Description

TX&RXLED#

ACBUS0, ACBUS1, ACBUS2, ACBUS3,

ACBUS4, ACBUS5, ACBUS6, ACBUS8,

ACBUS9

LED drive – pulses low when transmitting or receiving data

from or to the external device. For more details, refer to

the FT232H datasheet on the FTDI website.

SLEEP#

ACBUS0, ACBUS1, ACBUS2, ACBUS3,

ACBUS4, ACBUS5, ACBUS6, ACBUS8,

ACBUS9

Goes low during USB suspend mode. Typically used to

power down an external TTL to RS232 level converter IC

in USB to RS232 converter designs.

**CLK30

ACBUS0, ACBUS5, ACBUS6,ACBUS8,

ACBUS9

30MHz Clock output.

**CLK15

ACBUS0, ACBUS5, ACBUS6,ACBUS8,

ACBUS9

15MHz Clock output.

**CLK7.5

ACBUS0, ACBUS5, ACBUS6,ACBUS8,

ACBUS9

7.5MHz Clock output.

TriSt-PU

ACBUS0, ACBUS1, ACBUS2, ACBUS3,

ACBUS4, ACBUS5, ACBUS6, ACBUS8,

ACBUS9

Input Pull Up

DRIVE 1

ACBUS0, ACBUS5, ACBUS6,ACBUS8,

ACBUS9

Output High

DRIVE 0

ACBUS0, ACBUS1, ACBUS2, ACBUS3,

ACBUS4, ACBUS5, ACBUS6, ACBUS8,

ACBUS9

Output Low

I/O mode

ACBUS5, ACBUS6,ACBUS8, ACBUS9

ACBUS BitBang

Table 4.3 – CBUS Signal Options

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

4.4 Configuring the EEPROM

The UM232H-B contains an on-board EEPROM. 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 EEPROM programming utility FT_PROG, please see the FT_PROG User

Guide.

UM232H-B Datasheet

Version 1.3

Document Reference No.: FT_000721 Clearance No.: FTDI# 320

5 Module Dimensions

3.6 15.6

19.2

14.0

17.6 38.5

2.0

Figure 5.1 – UM232H-B Module Dimensions

All dimensions are given in millimetres.

The UM232H-B module exclusively uses lead free components, and is fully compliant with European Union

directive 2002/95/EC.

UM232H-B Datasheet

Version 1.3

Document Reference No.: FT_000721 Clearance No.: FTDI# 320

6 UM232H-B-WE Wire Colours

The –WE variant is supplied with a short cable. The wire colours are matched to signals as indicated

below.

Figure 6.1 – UM232H-B-WE Wire Colours (Top View)

Figure 6.2 – UM232H-B-WE Wire Colours (Bottom View)

UM232H-B Datasheet

Version 1.3

Document Reference No.: FT_000721 Clearance No.: FTDI# 320

7 UM232H-B Module Circuit Schematic

Figure 7.1 – Module Circuit Schematic

UM232H-B Datasheet

Version 1.3

Document Reference No.: FT_000721 Clearance No.: FTDI# 320

8 Internal MTP ROM Configuration

Following a power-on reset or a USB reset the FT232H will scan its internal EEPROM and read the USB

configuration descriptors stored there. The default values programmed into the external EEPROM for the

FT232H used on the UM232H-B are shown in Table 8.1.

Parameter

Value

Notes

USB Vendor ID (VID)

0403h

FTDI default VID (hex)

USB Product UD (PID)

6014h

FTDI default PID (hex)

Serial Number Enabled?

Yes

Serial Number

See Note

A unique serial number is generated and programmed into

the EEPROM during final test of the UM232H-B 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

UM232H-B

Max Bus Power Current

90mA

Power Source

Bus Powered

Device Type

FT232H

USB Version

0200

Returns USB 2.0 device description to the host.

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

TriSt-PU

Tristate Input pulled up

CBUS1

TriSt-PU

Tristate Input pulled up

CBUS2

TriSt-PU

Tristate Input pulled up

CBUS3

TriSt-PU

Tristate Input pulled up

CBUS4

TriSt-PU

Tristate Input pulled up

CBUS5

TriSt-PU

Tristate Input pulled up

CBUS6

TriSt-PU

Tristate Input pulled up

CBUS7

TriSt-PU

Tristate Input pulled up

CBUS8

PWREN#

Power Enable, low when FT232H enumerates, switches 5V

output power on when the device enumerates.

CBUS9

PWREN#

Power Enable, low when the FT232H enumerates, ,

switches the on board LED on when the device enumerates.

Table 8.1 – Default EEPROM Configuration

The on board EEPROM 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.

UM232H-B Datasheet

Version 1.3

Document Reference No.: FT_000721 Clearance No.: FTDI# 320

9 Contact Information

Head Office – Glasgow, UK

Branch Office – Tigard, Oregon, USA

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

Future Technology Devices International Limited (USA)

7130 SW Fir Loop

Tigard, OR 97223-8160

USA

Tel: +1 (503) 547 0988

Fax: +1 (503) 547 0987

E-mail (Sales)

sales1@ftdichip.com

E-mail (Sales)

us.sales@ftdichip.com

E-mail (Support)

support1@ftdichip.com

E-mail (Support)

us.support@ftdichip.com

E-mail (General Enquiries)

admin1@ftdichip.com

E-mail (General Enquiries)

us.admin@ftdichip.com

Branch Office – Taipei, Taiwan

Branch Office – Shanghai, China

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

Future Technology Devices International Limited (China)

Room 1103, No. 666 West Huaihai Road,

Shanghai, 200052

China

Tel: +86 21 62351596

Fax: +86 21 62351595

E-mail (Sales)

tw.sales1@ftdichip.com

E-mail (Sales)

cn.sales@ftdichip.com

E-mail (Support)

tw.support1@ftdichip.com

E-mail (Support)

cn.support@ftdichip.com

E-mail (General Enquiries)

tw.admin1@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 without

notice. No freedom to use patents or other intellectual property rights is implied 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 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

UM232H-B Datasheet

Version 1.3

Document Reference No.: FT_000721 Clearance No.: FTDI# 320

Appendix A – References

Document References

FT232H Datasheet

Acronyms and Abbreviations

Terms

Description

EEPROM

Electrically Erasable Programmable Read-Only Memory

FIFO

First In First Out

I²C

Inter-Integrated Circuit

SPI

Serial Peripheral Interface

UART

Universal Asynchronous Receiver/Transmitter

USB

Universal Serial Bus

UM232H-B Datasheet

Version 1.3

Document Reference No.: FT_000721 Clearance No.: FTDI# 320

Appendix B – List of Figures and Tables

List of Figures

Figure 4.1 – Module Pin Out ........................................................................................................... 5

Figure 5.1 – UM232H-B Module Dimensions ..................................................................................... 9

Figure 6.1 – UM232H-B-WE Wire Colours (Top View) ...................................................................... 10

Figure 6.2 – UM232H-B-WE Wire Colours (Bottom View) ................................................................. 10

Figure 7.1 – Module Circuit Schematic ........................................................................................... 11

List of Tables

Table 3.1 – Ordering Information .................................................................................................... 4

Table 4.1 – List of the Modules Signals ............................................................................................ 6

Table 4.2 – Module Pin Out Description............................................................................................ 7

Table 4.3 – CBUS Signal Options .................................................................................................... 8

Table 8.1 – Default EEPROM Configuration ..................................................................................... 12

UM232H-B Datasheet

Version 1.3

Document Reference No.: FT_000721 Clearance No.: FTDI# 320

Appendix C – Revision History

Document Title: UM232H-B USB to Serial/Parallel Break-Out Module

Document Reference No.: FT_000721

Clearance No.: FTDI# 320

Product Page: http://www.ftdichip.com/fastlane.htm

Document Feedback: Send Feedback

Revision

Changes

Date

1.0

Initial Release

2012-10-30

1.1

Removed details about complementary male header

2015-02-09

1.2

Added ordering information and support for Win 10

2016-04-11

1.3

Removed “Invert UART” option and revised title of

Table 8.1

2016-08-24