FT245R - USB to parallel FIFO interface IC

The FT245R is a USB to parallel FIFO interface, with the new FTDIChip-ID™ security dongle feature.  In addition, asynchronous and synchronous bit bang interface modes are available. USB to parallel designs using the FT245R have been further simplified by fully integrating the external EEPROM, clock circuit and USB resistors onto the device.

The FT245R is a USB to parallel FIFO interface IC, with the FTDIChip-ID™ security dongle feature. In addition, asynchronous and synchronous bit bang interface modes are available. USB to parallel designs using the FT245R have been further simplified by fully integrating the external EEPROM, clock circuit and USB resistors onto the device.

The FT245R adds a new function compared with its predecessors, effectively making it a "2-in-1" chip for some application areas. 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.

Key Features:

  • Single chip USB to parallel FIFO bidirectional data transfer interface.
  • Entire USB protocol handled on the chip - No USB-specific firmware programming required.
  • Simple interface to MCU / PLD / FPGA logic with simple 4-wire handshake interface.
  • FTDI's royalty-free VCP and D2XX drivers eliminate the requirement for USB driver development in most cases.
  • USB FTDIChip-ID™ feature.
  • FIFO receive and transmit buffers for high data throughput.
  • Device supplied preprogrammed with unique USB serial number.
  • Integrated power-on-reset circuit.
  • Fully integrated clock - no external crystal, oscillator, or resonator required.
  • Fully integrated AVCC supply filtering - No separate AVCC pin and no external R-C filter required.
  • 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 RoHS compliant).

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  • Single chip USB to parallel FIFO bidirectional data transfer interface.
  • Entire USB protocol handled on the chip - No USB-specific firmware programming required.
  • Simple interface to MCU / PLD / FPGA logic with simple 4-wire handshake interface.
  • Data transfer rate to 1 Megabyte / second - D2XX Direct Drivers.
  • Data transfer rate to 300 kilobyte / second - VCP Drivers.
  • FTDI's royalty-free VCP and D2XX drivers eliminate the requirement for USB driver development in most cases.
  • New USB FTDIChip-ID™ feature.
  • 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 allow the data bus to be used as a general purpose I/O port.
  • Integrated 1024 bit internal EEPROM for storing USB VID, PID, serial number and product description strings.
  • Device supplied preprogrammed with unique USB serial number.
  • Support for USB suspend / resume through PWREN# pin and Wake Up pin function.
  • In-built support for event characters.
  • Support for bus powered, self powered, and high-power bus powered USB configurations.
  • Integrated 3.3V level converter for USB I/O .
  • Integrated level converter on FIFO interface and control pins 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 resonator required.
  • Fully integrated AVCC supply filtering - No separate AVCC pin and no external R-C filter required.
  • 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 RoHS compliant).
  • Upgrading Legacy Peripherals to USB
  • Cellular and Cordless Phone USB data transfer cables and interfaces
  • 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 Instrumentation
  • 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
Part Number Package Type Pack Size
FT245RL-REEL 28-pin SSOP Reel of 2000
FT245RL-TUBE 28-pin SSOP Tube of 47
FT245RQ-C-REEL 32-pin QFN Reel of 6000
FT245RQ-C-REEL1000 32-pin QFN Reel of 1000
FT245RQ-C-REEL500 32-pin QFN Reel of 500
FT245RQ-C-REEL250 32-pin QFN Reel of 250
FT245RQ-C-REEL100 32-pin QFN Reel of 100
FT245RQ-TRAY 32-pin QFN Tray of 490
UM245R 2 x 12-pin Headers Each

The UM245R module is a USB - Parallel FIFO interface (TTL) development module for the FT245R IC device. The compact module, is designed to fit a 24 pin DIP socket which provides access to all FIFO interface and control pins (TXE#, RXF#, RD#, WR) on the FT245R device.

Versatile Range of Evaluation KitsAlphaMicro_FTDI_UM245R

FTDI evaluation modules and kits represent the quickest way to get learn about USB, with many of the kits allowing you to get running in less than 30 minutes.

Volume pricing is available which is flexible enough to mean you could embed a module within your design for minimal time-to-market turnaround.

Custom PID service
For volume applications Alpha Micro can provide a Product Identifier (PID) under the FTDI "umbrella scheme" that can be used to personalise a design based on the FT245Rx so that your end user will see your product name in the Windows Install Wizard for extra brand awareness.

There is an added benefit that the driver is tagged to your hardware and cannot be used by other devices. This feature can only be used with FTDI chips, the Vendor ID (VID) must remain untouched. Please contact our sales team for more information on this facility.

Customers should use MPROG to program this feature and any other changes to the default settings within the EEPROM (which must be fitted if this feature is required). MPROG is free to use and performs the programming tasks over the USB.

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Last updated: 14 August 2013