FT240X - Single chip USB2.0 to Parallel FIFO interface IC

This USB2.0 Full Speed IC offers a compact bridge to 8-Bit wide interfaces, with low power consumption (8mA), and is capable of operating up to 1Mb/s. It includes the complete FT-X series feature set, enabling USB to be added into a system design quickly and easily over a FIFO interface.

Key features:

  • Entire USB protocol handled on the chip. No USB specific firmware programming required.
  • Fully integrated 2048 byte EEPROM for storing device descriptors and CBUS I/O configuration.
  • Data transfer rates up to 1Mb/s
  • FTDI's royalty-free Virtual Com Port (VCP) and Direct (D2XX) drivers eliminate the requirement for USB driver development in most cases.
  • Configurable CBUS I/O pin.
  • Device supplied pre-programmed with unique USB serial number.
  • Supports bus powered, self powered and high-power bus powered USB configurations.
  • Battery Charger Detection. May be used by mobile devices to detect the presence of a charger on the USB port to enable higher current / faster charging of batteries.
  • Low operating current of 8mA (typical) and USB suspend current of 125uA (typical) current.
  • Low USB bandwidth consumption.
  • UHCI/OHCI/EHCI host controller compatible.
  • USB 2.0 Full Speed compatible.
  • 24 Pin SSOP and QFN packages (both RoHS compliant).


  • Entire USB protocol handled on the chip. No USB specific firmware programming required.
  • Fully integrated 2048 byte EEPROM for 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.
  • Data transfer rates up to 1Mb/s.
  • 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.
  • Configurable CBUS I/O pins.
  • 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
  • Synchronous and asynchronous bit bang interface options with RD# and WR# strobes.
  • Battery Charger Detection. May be used by mobile devices to detect the presence of a charger on the USB port to enable higher current / faster charging of batteries.
  • Device supplied pre-programmed with unique USB serial number.
  • Supports bus powered, self powered and high-power bus powered USB configurations.
  • 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)
  • Configurable I/O pin output drive strength.
  • Integrated power-on-reset circuit.
  • UART signal inversion option.
  • Internal 3.3V/1.8V LDO regulators
  • Low operating current of 8mA (typical) and USB suspend current of 125uA (typical) current.
  • Low USB bandwidth consumption.
  • UHCI/OHCI/EHCI host controller compatible.
  • USB 2.0 Full Speed compatible.
  • Extended operating temperature range: -40°C to 85°C
  • Available in compact Pb-free 24 Pin SSOP and QFN packages (both RoHS compliant).
  • USB to SPI interface in 1-bit mode
  • Upgrading Legacy Peripherals to USB
  • Utilising USB to add system modularity
  • Incorporate USB interface to enable PC transfers for development system communication
  • Interfacing MCU/PLD/FPGA based designs to add USB connectivity
  • USB Industrial Control
  • USB MP3 Player Interface
  • USB FLASH Card Reader and Writers
  • Set Top Box PC - USB interface
  • USB Digital Camera Interface
  • USB dongle implementations for Software/Hardware Encryption and Wireless Modules
  • Detect USB dedicated charging ports, to allow for high current battery charging in portable devices.
Part Number Description Pack Size
FT240XS-D-R 24-pin SSOP single chip USB to parallel FIFO IC, Revision D Reel of 3000
FT240XS-D-U 24-pin SSOP single chip USB to parallel FIFO IC, Revision D Tube of 58
FT240XQ-D-R 24-pin QFN single chip USB to parallel FIFO UART IC, Revision D Reel of 5000
FT240XQ-D-T 24-pin QFN single chip USB to parallel FIFO UART IC, Revision D Tray of 490
Development Modules
UMFT240XA-01 USB to 8-bit 245 FIFO evaluation module. Pin length: 4.6mm. Each
UMFT240XA-02 USB to 8-bit 245 FIFO evaluation module. Pin length: 3.6mm (when available). Each

Development Module

The UMFT240XA Development Module is based on the FT240XQ (16-pin QFN) chip and offers access to all the pins of the FT240X.

UMFT230XA-01-200px

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Last updated: 8 August 2013