FT245R USB UART I.C. Datasheet Version 1.05

© Future Technology Devices International Ltd. 2005

Page 2

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Single chip USB to parallel FIFO bidirectional data

transfer interface.

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Entire USB protocol handled on the chip - No

USB-specific firmware programming required.

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Simple interface to MCU / PLD / FPGA logic with

simple 4-wire handshake interface.

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Data transfer rate to 1 Megabyte / second - D2XX

Direct Drivers.

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Data transfer rate to 300 kilobyte / second - VCP

Drivers.

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256 byte receive buffer and 128 byte transmit

buffer utilising buffer smoothing technology to allow

for high data throughput.

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FTDI’s royalty-free VCP and D2XX drivers

eliminate the requirement for USB driver

development in most cases.

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New USB FTDIChip-ID™ feature.

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FIFO receive and transmit buffers for high data

throughput.

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Adjustable receive buffer timeout.

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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.

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Integrated 1024 Bit internal EEPROM for storing

USB VID, PID, serial number and product

description strings.

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Device supplied preprogrammed with unique USB

serial number.

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Support for USB suspend / resume through

PWREN# pin and Wake Up pin function.

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In-built support for event characters.

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Support for bus powered, self powered, and high-

power bus powered USB configurations.

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Integrated 3.3V level converter for USB I/O .

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Integrated level converter on FIFO interface and

control pins for interfacing to 5V - 1.8V Logic.

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True 5V / 3.3V / 2.8V / 1.8V CMOS drive output

and TTL input.

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High I/O pin output drive option.

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Integrated USB resistors.

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Integrated power-on-reset circuit.

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Fully integrated clock - no external crystal,

oscillator, or resonator required.

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Fully integrated AVCC supply filtering - No separate

AVCC pin and no external R-C filter required.

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USB bulk transfer mode.

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3.3V to 5.25V Single Supply Operation.

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Low operating and USB suspend current.

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Low USB bandwidth consumption.

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UHCI / OHCI / EHCI host controller compatible

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USB 2.0 Full Speed compatible.

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-40°C to 85°C extended operating temperature

range.

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Available in compact Pb-free 28 Pin SSOP and

QFN-32 packages (both RoHS compliant).

1. Features

1.1 Hardware Features

Royalty-Free VIRTUAL COM PORT

(VCP) DRIVERS for...

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Windows 98, 98SE, ME, 2000, Server 2003, XP.

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Windows Vista / Longhorn*

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Windows XP 64-bit.*

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Windows XP Embedded.

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Windows CE.NET 4.2 & 5.0

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MAC OS 8 / 9, OS-X

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Linux 2.4 and greater

Royalty-Free D2XX Direct Drivers

(USB Drivers + DLL S/W Interface)

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Windows 98, 98SE, ME, 2000, Server 2003, XP.

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Windows Vista / Longhorn*

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Windows XP 64-bit.*

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Windows XP Embedded.

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Windows CE.NET 4.2 & 5.0

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Linux 2.4 and greater

1.2 Driver Support

The drivers listed above are all available to download for free from the FTDI website. Various 3rd Party Drivers are

also available for various other operating systems - see the FTDI website for details.

* Currently Under Development. Contact FTDI for availability.

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Upgrading Legacy Peripherals to USB

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Cellular and Cordless Phone USB data transfer

cables and interfaces

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Interfacing MCU / PLD / FPGA based designs to

USB

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USB Audio and Low Bandwidth Video data transfer

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PDA to USB data transfer

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USB Smart Card Readers

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USB Instrumentation

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USB Industrial Control

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USB MP3 Player Interface

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USB FLASH Card Reader / Writers

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Set Top Box PC - USB interface

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USB Digital Camera Interface

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USB Hardware Modems

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USB Wireless Modems

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USB Bar Code Readers

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USB Software / Hardware Encryption Dongles

1.3 Typical Applications