FT231X USB TO FULL HANDSHAKE UART IC
Datasheet
Version 1.2
Document No.: FT_000565 Clearance No.: FTDI# 261
Future Technology
Devices International Ltd
.
FT231X
(USB to FULL HANDSHAKE UART IC)
USB Battery Charger Detection. Allows for USB
peripheral devices to detect the presence of a
higher power source to enable improved
charging.
The FT231X is a USB to serial UART
interface with full modem control and
the following advanced features:
Single chip USB to asynchronous serial data
transfer interface.
Device supplied pre-programmed with unique
USB serial number.
Entire USB protocol handled on the chip. No
USB specific firmware programming required.
USB Power Configurations; supports bus-
powered, self-powered and bus-powered with
power switching
Fully integrated 2048 byte multi-time-
programmable (MTP) memory, storing device
descriptors and CBUS I/O configuration.
Integrated +3.3V level converter for USB I/O.
True 3.3V CMOS drive output and TTL input;
Operates down to 1V8 with external pull-ups.
Tolerant of 5V input.
Fully integrated clock generation with no
external crystal required plus optional clock
output selection enabling glue-less interface
to external MCU or FPGA.
Configurable I/O pin output drive strength; 4
mA(min) and 16 mA(max).
Data transfer rates from 300 baud to 3 Mbaud
(RS422, RS485, and RS232 ) at TTL levels.
Integrated power-on-reset circuit.
Fully integrated AVCC supply filtering - no
external filtering required.
512 byte receive buffer and 512 byte transmit
buffer utilising buffer smoothing technology to
allow for high data throughput.
UART signal inversion option.
+ 5V Single Supply Operation.
Internal 3V3/1V8 LDO regulators
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 125uA (suspend-typ).
Configurable CBUS I/O pins.
UHCI/OHCI/EHCI host controller compatible
USB 2.0 Full Speed capable.
Transmit and receive LED drive signals.
UART interface support for 7 or 8 data bits, 1
or 2 stop bits and odd / even / mark / space
no parity
Extended operating temperature range; -40 to
85⁰C.
Synchronous and asynchronous bit bang
interface options with RD# and WR# strobes.
Available in compact, Pb-free, 20 Pin SSOP and
QFN packages (both 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 © 2013 Future Technology Devices International Limited
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