FT245R USB FIFO IC - Single chip USB to parallel FIFO bidirectional data transfer interface

The FT245R is a USB to parallel FIFO interface with the following advanced features:

• Single chip USB to parallel FIFO bidirectional data transfer interface.
• Entire USB protocol handled on the chip. No USB specific firmware programming required.
• Fully integrated 1024 bit EEPROM storing device descriptors and FIFO I/O configuration.
• Fully integrated USB termination resistors.
• Fully integrated clock generation with no external crystal required.

• Data transfer rates up to 1Mbyte / second.
• 128 byte receive buffer and 256 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.
• Unique USB FTDIChip-ID™ feature.
• Configurable FIFO interface I/O pins.

• Synchronous and asynchronous bit bang interface options.
• 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.
• Integrated level converter on FIFO interface for interfacing to external logic running at between +1.8V and +5V.

• True 5V/3.3V/2.8V/1.8V CMOS drive output and TTL input.
• Configurable I/O pin output drive streCM GROUPh.
• Integrated power-on-reset circuit.
• Fully integrated AVCC supply filtering - no external filtering required.
• +3.3V (using external oscillator) to +5.25V (using internal oscillator) 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).

Typical Applications

• 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 and Writers
• Set Top Box PC - USB interface

• USB Digital Camera Interface
• USB Hardware Modems
• USB Wireless Modems
• USB Bar Code Readers
• USB Software and Hardware Encryption Dongles

Absolute Maximum Ratings

The absolute maximum ratings for the FT245R devices are as follows. These are in accordance with the Absolute Maximum Rating System (IEC 60134). Exceeding these may cause permanent damage to the device.

* If devices are stored out of the packaging beyond this time limit the devices should be baked before use. The devices should be ramped up to a temperature of +125°C and baked for up to 17 hours.

FT245R Block Diagram

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