FT232R - USB UART
is the latest device to be added to FTDI’s range
of USB UART interface Integrated Circuit Devices. The FT232R is a USB to
serial UART interface with optional clock generator output, and the new
FTDIChip-ID™ security dongle feature. In addition, asynchronous and
synchronous bit bang interface modes are available. USB to serial
designs using the FT232R have been further simplified by fully
integrating the external EEPROM, clock circuit and USB resistors onto
The FT232R adds two new functions compared with its
predecessors, effectively making it a "3-in-1" chip for some application
areas. The internally generated clock (6MHz, 12MHz, 24MHz, and 48MHz)
can be brought out of the device and used to drive a microcontroller or
external logic. A unique number (the FTDIChip-ID™) is burnt into the
device during manufacture and is readable over USB, thus forming the
basis of a security dongle which can be used to protect customer
application software from being copied.
The FT232R is available in Pb-free (RoHS compliant) compact 28-Lead
SSOP and QFN-32 packages.
Press releases, articles and
web links related to the FT232R can be found
A frequently asked questions
page has been created here.
Key Hardware Features
Single chip USB to asynchronous serial data transfer interface.
Entire USB protocol handled on the chip - No USB-specific firmware
UART interface support for 7 or 8 data bits, 1 or 2 stop bits and
odd / even / mark / space / no parity.
Fully assisted hardware or X-On / X-Off software handshaking.
Data transfer rates from 300 baud to 3 Megabaud (RS422 / RS485 and
at TTL levels) and 300 baud to 1 Megabaud (RS232).
In-built support for event characters and line break condition.
New USB FTDIChip-ID™ feature.
New configurable CBUS I/O pins.
Auto transmit buffer control for RS485 applications.
Transmit and receive LED drive signals.
New 48MHz, 24MHz,12MHz, and 6MHz clock output signal Options for
driving external MCU or FPGA.
FIFO receive and transmit buffers for high data throughput.
256 Byte receive buffer and 128 Byte transmit buffer utilising
buffer smoothing technology to allow for high data throughput.
Adjustable receive buffer timeout.
Synchronous and asynchronous bit bang mode interface options with
RD# and WR# strobes.
New CBUS bit bang mode option.
Integrated 1024 bit internal EEPROM for I/O configuration and
storing USB VID, PID, serial number and product description strings.
Device supplied preprogrammed with unique USB serial number.
Support for USB suspend / resume.
Support for bus powered, self powered, and high-power bus powered
Integrated 3.3V level converter for USB I/O .
Integrated level converter on UART and CBUS for interfacing to 5V
- 1.8V Logic.
True 5V / 3.3V / 2.8V / 1.8V CMOS drive output and TTL input.
High I/O pin output drive option.
Integrated USB resistors.
Integrated power-on-reset circuit.
Fully integrated clock - no external crystal, oscillator, or
Fully integrated AVCC supply filtering - No separate AVCC pin and
no external R-C filter required.
UART signal inversion option.
USB bulk transfer mode.
3.3V to 5.25V Single Supply Operation.
Low operating and USB suspend current.
Low USB bandwidth consumption.
UHCI / OHCI / EHCI host controller compatible.
USB 2.0 Full Speed compatible.
-40°C to 85°C extended operating temperature range.
Available in compact Pb-free 28 Pin SSOP and QFN-32 packages (both
USB to RS232 / RS422 / RS485 Converters
Upgrading Legacy Peripherals to USB
Cellular and Cordless Phone USB data transfer cables and
Interfacing MCU / PLD / FPGA based designs to USB
USB Audio and Low Bandwidth Video data transfer
PDA to USB data transfer
USB Smart Card Readers
USB Industrial Control
USB MP3 Player Interface
USB FLASH Card Reader / Writers
Set Top Box PC - USB interface
USB Digital Camera Interface
USB Hardware Modems
USB Wireless Modems
USB Bar Code Readers
USB Software / Hardware Encryption Dongles