FT234XD USB TO BASIC UART IC
Version 1.2
Document No.: FT_000753 Clearance No.: FTDI#324
Future Technology
Devices International
Ltd
.
FT234XD
(USB to BASIC UART IC)
USB Battery Charging Detection. Allows for USB
peripheral devices to detect the presence of a
higher power source to enable improved
charging.
The FT234XD is a USB to serial UART
interface with optimised packaging (3mm
x 3mm 12 pin DFN) for smaller PCB
designs and the following advanced
features:
Device supplied pre-programmed with unique
USB serial number.
USB Power Configurations; supports bus- powered,
self-powered and bus-powered with power switching
Single chip USB to asynchronous serial data
transfer interface.
Integrated +3.3V level converter for USB I/O.
Entire USB protocol handled on the chip. No USB
specific firmware programming required.
True 3.3V CMOS drive output and TTL input;
Operates down to 1V8 with external pull ups.
Tolerant of 5V input.
Fully
integrated
2048
byte
multi-time-
programmable (MTP) memory, storing device
descriptors and CBUS I/O configuration.
Fully integrated clock generation with no external
crystal required plus optional clock output selection
enabling a glue-less interface to external MCU or
FPGA.
Configurable I/O pin output drive strength;
4 mA (min) and 16 mA (max).
Integrated power-on-reset circuit.
Fully integrated AVCC supply filtering - no
external filtering required.
Data transfer rates from 300 baud to 3 Mbaud
(RS422, RS485, and RS232) at TTL levels.
UART signal inversion option.
+ 5V Single Supply Operation.
Internal 3.3V/1.8V LDO regulators
512 byte receive buffer and 512 byte transmit
buffer utilising buffer smoothing technology to
allow for high data throughput.
FTDI’s royalty-free Virtual Com Port (VCP) and
Direct (D2XX) drivers eliminate the requirement
for USB driver development in most cases.
Low operating and USB suspend current;
8mA (active-typ) and 70uA (suspend-typ).
UHCI/OHCI/EHCI host controller compatible.
USB 2.0 Full Speed compatible.
Configurable CBUS I/O pin.
Transmit and receive LED drive signals.
Extended operating temperature range; -40 to
85⁰C.
UART interface support for 7 or 8 data bits, 1 or 2
stop bits and odd / even / mark / space / no parity
Synchronous and asynchronous bit bang interface
options with RD# and WR# strobes.
Available in compact Pb-free 12 pin DFN package
(3mm x 3mm) RoHS compliant.
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 © 2015 Future Technology Devices International Limited
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