TTL-232R-3V3 USB to TTL Serial Converter Cable (3.3V IO)

Datasheet Version 0.90

© Future Technology Devices International Ltd. 2006

Page 2

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TTL-232R-3V3 Converter Cable provides a USB to

TTL Serial header interface (6 way, 0.1” pitch).

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On board FT232RQ provides single chip USB to

asynchronous serial data transfer interface.

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Entire USB protocol handled on the FT232RQ chip

- No USB-specific firmware programming required.

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Connect directly to a microcontroller UART or I/O

pins

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UART interface support for 7 or 8 data bits, 1 or 2

stop bits and odd / even / mark / space / no parity.

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Fully assisted hardware (RTS#/CTS#) or X-On / X-

Off software handshaking.

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Data transfer rates from 300 baud to 3 Megabaud

at TTL levels.

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3.3V CMOS drive outputs and 5V safe TTL inputs

makes the TTL-232R-3V3 easy to interface to 3.3V

MCU’s.

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FTDI’s royalty-free VCP allow for communication

as a standard COM port and D2XX ‘direct’ drivers

provide DLL application programming interface.

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In-built support for event characters and line break

condition.

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Support for FT232R FTDIChip-ID™ feature.

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256 byte receive buffer and 128 byte transmit

buffer utilising buffer smoothing technology to allow

for high data throughput.

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FIFO receive and transmit buffers for high data

throughput.

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Adjustable receive buffer timeout.

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Integrated 1024 bit internal EEPROM for storing

custom USB VID, PID, serial number and product

description strings.

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Device supplied preprogrammed with unique USB

serial number.

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Support for USB suspend and resume.

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Cable supply voltage comes from USB - no

external supply required.

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5V VCC output allow devices to be powered from

the USB port.

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6 way 0.1” header connector (Tx, Rx, RTS#, CTS#,

Vcc, and GND)

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Low USB bandwidth consumption.

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UHCI / OHCI / EHCI host controller compatible

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USB 2.0 Full Speed compatible.

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-40°C to +85°C operating temperature range.

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Connect to a PC via USB ‘A’ plug on 1.80 meter (6

foot) cable.

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A 5V TTL I/O version is also availalable (TTL-

232R)

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Custom versions also available (subject to MOQ).

1. Features

1.1 Hardware Features

Royalty-Free VIRTUAL COM PORT

(VCP) DRIVERS for...

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Windows 98, 98SE, ME, 2000, Server 2003, XP.

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Windows Vista / Longhorn*

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Windows XP 64-bit.

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Windows XP Embedded.

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Windows CE.NET 4.2 & 5.0

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MAC OS 8 / 9, OS-X

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Linux 2.4 and greater

Royalty-Free D2XX Direct Drivers

(USB Drivers + DLL S/W Interface)

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Windows 98, 98SE, ME, 2000, Server 2003, XP.

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Windows Vista / Longhorn*

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Windows XP 64-bit.

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Windows XP Embedded.

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Windows CE.NET 4.2 & 5.0

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MAC OS OS-X*

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Linux 2.4 and greater

1.2 Driver Support

The drivers listed above are all available to download for free from the FTDI website. Various 3rd Party Drivers are

also available for various other operating systems - see the FTDI website for details.

* Currently Under Development. Contact FTDI for availability.

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USB to Serial TTL Level Converter

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Upgrading Legacy Peripherals to USB

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Interface Microcontroller UART or I/O to USB

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Interface FPGA / PLD to USB

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Replace MAX232 type level shifters allowing for

direct connection of products to PC via USB

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USB Instrumentation PC interface

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USB Industrial Control

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USB Software / Hardware Encryption Dongles

1.3 Typical Applications