Features

Hardware Features

• Single chip USB to asynchronous serial data transfer interface.

• Entire USB protocol handled on the chip - No USB-specific firmware programming required.

• 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).

• 256 byte receive buffer and 128 byte transmit buffer utilising buffer smoothing technology to allow for high data throughput.

• FTDI’s royalty-free VCP and D2XX drivers eliminate the requirement for USB driver development in most cases.

• 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.

• 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 storing USB VID, PID, serial number and product description strings, and CBUS I/O configuration.

• Device supplied preprogrammed with unique USB serial number.

• Support for USB suspend and resume.

• 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 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 resonator required.

• 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 RoHS compliant).

Typical Applications

• USB to RS232 / RS422 / RS485 Converters

• 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