LC231X Module Datasheet
Version 1.1
Document Reference No.: FT_001388
Clearance No.: FTDI#516
Future Technology
Devices International
Limited
Datasheet
LC231X Development
Module
1 Introduction
1.1
The LC231X module is a low cost USB to UART
bridge using FTDI’s FT231X to transfer data at up
to 3M Baud. Ideal for programming Arduino Pro,
ESP modules etc.. It also provides the pinout which
follows the industry standard FTDI TTL cable
interface. The module provides the UART interface
with full modem handshaking control too.
The LC231X module utilises the FT231X from
FTDI. For a full list of the FT231X’s features
refer to the FT231X datasheet.
The LC231X IO interface also provides the option
to output 5V power to external hardware. The
interface IO levels may be set to either set to 3V3
or 5V by an on-board jumper with no soldering /
de-soldering required. In 5V mode, outputs are rail
to rail for maximum reliability.
The LC231X module provides 2 interface options.
One is a 1X6 pin right angle socket header which
follows the industry standard FTDI TTL cable
interface for basic UART signals(RXD, TXD, RTS,
CTS, Power and GND). The other is the full UART
plus modem handshake control signals, mapped to
two rows of 1x7 pin headers. Note the user cannot
fit all connectors at the same time. The two
header rows are spaced 0.5″ apart along the sides
of the board, which allows the module to plug into
a solderless breadboard. Each module is supplied
with one right angle socket and two 7pin headers
included. The user can select which ones to fit.
Furthermore there are TX and RX LEDs to indicate
data transmission on the UART signals.
Features
In addition, the LC231X
features:
has the following
Small PCB size as 15.24mm X 28.19mm
Configurable IO voltage interface
USB 2.0 full speed
Provides a full modem control interface
Low supply current :10mA
Supported baud rates: 300 bps to 3 Mbps
Power output to external logic 5V/3V3
Provides two I/O header options:
-
One 1X6 pin right angle socket header
for standard FTDI TTL cable interface,
-
Or two rows of 1x7 pin headers for full
modem handshake control and GPIO
functions.
o
-40 C to +85oC operational temperature
range
Full RoHS compliance
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 Company Number: SC136640
Copyright © Future Technology Devices International Limited
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LC231X Module Datasheet
Version 1.1
Document Reference No.: FT_001388
Clearance No.: FTDI#516
2 Typical Applications
USB to UART bridge
Debugger / Programmer for embedded MCU e.g. Arduino
USB IO extender for small 8-bit micro’s
2.1
Driver Support
The LC231X requires USB drivers (listed below), available free from http://www.ftdichip.com, which
are used to make the module appear as a virtual COM port (VCP). This allows the user to communicate
with the USB interface via a standard PC serial emulation port (for example TTY). Another FTDI USB
driver, the D2XX driver, can also be used with application software to directly access the LC231X through
a DLL. Both VCP and D2XX drivers support Windows auto-update.
Royalty free VIRTUAL COM PORT
(VCP) DRIVERS for...
Royalty free D2XX Direct Drivers
(USB Drivers + DLL S/W Interface)
Windows 10 32,64-bit
Windows 10 32,64-bit
Windows 8/8.1 32,64-bit
Windows 8/8.1 32,64-bit
Windows 7 32,64-bit
Windows 7 32,64-bit
Windows CE 4.2, 5.0 and 6.0
Windows CE 4.2, 5.0 and 6.0
Windows Server 2003, 2008 R2, 2012
Windows Server 2003, 2008 R2, 2012
Mac OS-X
MAC OS-X
Linux 2.4 and greater
Linux 2.4 and greater
Android(J2xx)
For driver installation, please refer to the installation guides on our website:
http://www.ftdichip.com/Support/Documents/InstallGuides.htm
3 Ordering Information
Part No.
Description
LC231X
Low cost FT231X USB to UART module
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LC231X Module Datasheet
Version 1.1
Document Reference No.: FT_001388
Clearance No.: FTDI#516
Table of Contents
1
Introduction .................................................................... 1
1.1
2
Features .................................................................................... 1
Typical Applications ........................................................ 2
2.1
Driver Support .......................................................................... 2
3
Ordering Information ...................................................... 2
4
Pin Out and Signal Description ........................................ 4
5
4.1
Module Description ................................................................... 4
4.2
Module Interface Signal Desciption ........................................... 5
Devices Characteristics and Ratings ................................ 7
5.1
Electrical Specification .............................................................. 7
6
Board Schematic ............................................................. 8
7
Mechanical Dimensions ................................................. 10
8
Contact Information ...................................................... 11
Appendix A – References ................................................... 11
Document References ..................................................................... 12
Acronyms and Abbreviations ........................................................... 12
Appendix B - List of Figures and Tables ............................. 12
List of Tables ................................................................................... 13
List of Figures ................................................................................. 13
Appendix C – Revision History ........................................... 14
Copyright © Future Technology Devices International Limited
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LC231X Module Datasheet
Version 1.1
Document Reference No.: FT_001388
Clearance No.: FTDI#516
4 Pin Out and Signal Description
4.1 Module Description
Figure 1 - Module Features
Feature
Micro USB connector
IO voltage selection
6pin 2.54mm pitch connector UART interface
7pin 2.54mm pitch connector full modem control interface
7pin 2.54mm pitch connector full modem control interface
FT231X USB to serial bridge IC
Green color LED
Red color LED
Table 1 - Module Features & Description
Copyright © Future Technology Devices International Limited
Reference
Designator
CN10
CN14
CN11
CN12
CN13
U10
RX
TX
4
LC231X Module Datasheet
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Document Reference No.: FT_001388
Clearance No.: FTDI#516
4.2 Module Interface Signal Desciption
Figure 2 - Module Interface Diagram
The pin description of CN11 is given in Table 2.
Pin
No
Pin Name
Type
Description
1
GND
Power
Ground
2
CTS
Input
Clear To Send Control Input/Handshake signal
3
VBUS
Power
5V Supply
4
TXD
Output
Transmit Asynchronous Data Output
5
RXD
Input
Receiving Asynchronous Data Input
6
RTS
Output
Request To Send Control Output/Handshake Signal
Table 2 - CN11 Pin Description
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LC231X Module Datasheet
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Clearance No.: FTDI#516
The LC231X can support both 3.3V and 5V interfacing; the power jumper selection is through CN14. The
default jumper setting is in 3.3V interface.
Pin Number
Description
1-2
3.3V IO interface (Default)
2-3
5V IO interface
Table 3 - CN14 Jumper Selection
If user require a simple UART interface (TX,RX,CTS and RTS),user can use CN11 which follow standard
FTDI TTL interface. If user requires UART with full modem control and some extra configurable IO port,
user can consider use CN12 and CN13 which provide UART with full modem control and IO port. The pin
description of CN12 and CN13 is given by Table 4 and Table 5. Note the user could only fit either CN11
or CN12/CN13 connectors at the same time.
Pin
No
Pin Name
Type
Description
1
GND
Power
Ground
2
TXD
Output
Transmit Asynchronous Data Output
3
RXD
Input
Receiving Asynchronous Data Input
4
VBUS
Power
5V Supply at 450mA
5
CBUS0
GPIO
Configurable IO port
6
CBUS3
GPIO
Configurable IO port
7
RST
Pin
No
Pin Name
Type
Description
1
RTS
Output
Request To Send Control Output/Handshake Signal
2
CTS
Input
Clear To Send Control Input/Handshake signal
3
DSR
Input
Data Set Ready Control Input/Handshake Signal
4
DTR
Output
Data Terminal Ready Control Output/Handshake
Signal
5
DCD
Input
Data Carrier Detect Control Input
6
RI
Input
Ring Indicator Input for Remote Wake Up
7
3V3
Input
FT231X Reset
Table 4 - CN12 Pin Description
Power
3V3 Supply at 50mA
Table 5 - CN13 Pin Description
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LC231X Module Datasheet
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Document Reference No.: FT_001388
Clearance No.: FTDI#516
5 Devices Characteristics and Ratings
5.1 Electrical Specification
Parameter
Value
Unit
Storage Temperature
-30°C to 80°C
Degrees C
Ambient Operating Temperature (Power
Applied)
-20°C to 70°C
Degrees C
Conditions
Table 6 - Temperature Parameters
DC Characteristics (Ambient Temperature = -20°C to +70°C)
IO interface: 5V
Parameter
V
I
bus
Description
Minimum
Output Power Voltage
4.75
Supply current
o
Typical
Maximum
Units
5.25
V
450
3.2
4.1
mA
Voh
Output Voltage High
4.9
Vol
Output Voltage Low
0.3
0.4
0.6
V
Table 7 - 5V Interface Operating Voltage and Current
Conditions
Assuming
connected to
direct to a host
port or a
powered hub,
and enumerated
V
DC Characteristics (Ambient Temperature = -20°C to +70°C)
IO interface: 3V3
Parameter
V
I
bus
o
Description
Minimum
Output Power Voltage
4.75
Supply current
Typical
Maximum
Units
5.25
V
450
2.2
2.8
mA
Voh
Output Voltage High
3.2
Vol
Output Voltage Low
0.3
0.4
0.6
V
Table 8 - 3V3 Interface Operating Voltage and Current
Copyright © Future Technology Devices International Limited
Conditions
Assuming
connected to
direct to a host
port or a
powered hub,
and enumerated
V
7
LC231X Module Datasheet
Version 1.1
Document Reference No.: FT_001388
Clearance No.: FTDI#516
6 Board Schematic
Figure 3 – FT231X Schematics
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LC231X Module Datasheet
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Figure 4 – LC231X Module Components Placement
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LC231X Module Datasheet
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Clearance No.: FTDI#516
7 Mechanical Dimensions
6.5 mm
28.19 mm
15.24 mm
Figure 5 – LC231X Module Dimensions
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LC231X Module Datasheet
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Clearance No.: FTDI#516
8 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)
E-mail (Support)
E-mail (General Enquiries)
E-mail (Sales)
E-mail (Support)
E-mail (General Enquiries)
sales1@ftdichip.com
support1@ftdichip.com
admin1@ftdichip.com
us.sales@ftdichip.com
us.support@ftdichip.com
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)
E-mail (Support)
E-mail (General Enquiries)
E-mail (Sales)
E-mail (Support)
E-mail (General Enquiries)
tw.sales1@ftdichip.com
tw.support1@ftdichip.com
tw.admin1@ftdichip.com
cn.sales@ftdichip.com
cn.support@ftdichip.com
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
Appendix A – References
Copyright © Future Technology Devices International Limited
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LC231X Module Datasheet
Version 1.1
Document Reference No.: FT_001388
Clearance No.: FTDI#516
Document References
For module documentations, please refer to URL below:
FT231X datasheet: FT231X Datasheet
Acronyms and Abbreviations
Terms
Description
LED
Light-emitting diode
USB
Universal Serial Bus
UART
Universal Asynchronous Receiver/Transmitter
Appendix B - List of Figures and Tables
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LC231X Module Datasheet
Version 1.1
Document Reference No.: FT_001388
Clearance No.: FTDI#516
List of Tables
Table 1 - Module Features & Description .......................................................................................... 4
Table 2 - CN11 Pin Description ....................................................................................................... 5
Table 3 - CN14 Jumper Selection .................................................................................................... 6
Table 4 - CN12 Pin Description ....................................................................................................... 6
Table 5 - CN13 Pin Description ....................................................................................................... 6
Table 6 - Temperature Parameters ................................................................................................. 7
Table 7 - 5V Interface Operating Voltage and Current ....................................................................... 7
Table 8 - 3V3 Interface Operating Voltage and Current ..................................................................... 7
List of Figures
Figure 1 - Module Features ............................................................................................................ 4
Figure 2 - Module Interface Diagram ............................................................................................... 5
Figure 3 – FT231X Schematics ....................................................................................................... 8
Figure 4 – LC231X Module Components Placement ........................................................................... 9
Figure 5 – LC231X Module Dimensions .......................................................................................... 10
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LC231X Module Datasheet
Version 1.1
Document Reference No.: FT_001388
Clearance No.: FTDI#516
Appendix C – Revision History
Document Title:
LC231X Module Datasheet
Document Reference No.:
FT_001388
Clearance No.:
FTDI#516
Product Page:
http://www.ftdichip.com/LC231X.htm
Document Feedback:
Send Feedback
Revision
Changes
Date
Version 1.0
Initial Release
2017-02-21
Version 1.1
Updated release
2017-03-30
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