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FT2232 Dual Channel Universal USB to Serial

The Universal USB to Serial breakout board is designed to allow the maximum flexibility for all your serial protocol needs. This adapter comes with dual UART's out of the box, just plug it in and you will have 2 independent COM ports usable to 12,000,000 baud.

    The FT2232H is specially designed to take advantage of several common serial protocols. The board includes an onboard 3.3V regulator, access to +5 and +3.3V if your project is to run on bus power, and a blank EEPROM for configuration data(such as modes, VID/PID). Also a jumper is supplied to disconnect the 3.3V power from the 10 pin header. Keep this jumper in place to feed the 3.3v pin near BD0.

Form factor: 1.8 x 2.5 in.


Key hardware features are:

  • Single chip USB to dual serial / parallel ports with a variety of configurations.

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

  • USB 2.0 High Speed (480Mbits/second) and Full Speed (12Mbits/second) compatible.

  • Dual Multi-Protocol Synchronous Serial Engine (MPSSE) to simplify synchronous serial protocol (USB to JTAG, I2C, SPI or bit-bang) design.

  • Dual independent UART or FIFO ports configurable using MPSSEs.

  • Independent Baud rate generators.

  • RS232/RS422/RS485 UART Transfer Data Rate up to 12Mbaud. (RS232 Data Rate limited by external level shifter).

  • USB to parallel FIFO transfer data rate up to 10Mbyte/sec.

  • Single channel synchronous FIFO mode for transfers up to 40 Mbytes/sec.

  • CPU-style FIFO interface mode simplifies CPU interface design.

  • MCU host bus emulation mode configuration option.

  • Fast Opto-Isolated serial interface option.

  • FTDI’s royalty-free Virtual Com Port (VCP) and Direct (D2XX) drivers eliminate the requirement for USB driver development in most cases.

  • Adjustable receive buffer timeout.

  • Option for transmit and receive LED drive signals on each channel.

  • Enhanced bit-bang Mode interface option with RD# and WR# strobes.

  • FT245B-style FIFO interface option with bidirectional data bus and simple 4 wire handshake interface.

  • Highly integrated design includes +1.8V LDO regulator for VCORE, integrated POR function and on chip clock multiplier PLL (12MHz – 480MHz).

  • Asynchronous serial UART interface option with full hardware handshaking and modem interface signals.

  • Fully assisted hardware or X-On / X-Off software handshaking.

  • UART Interface supports 7/8 bit data, 1/2 stop bits, and Odd/Even/Mark/Space/No Parity.

  • Auto-transmit enable control for RS485 serial applications using TXDEN pin.

  • Operational configuration mode and USB Description strings configurable in external EEPROM over the USB interface.

  • Configurable I/O drive strength (4,8,12 or 16mA) and slew rate.

  • Low operating and USB suspend current.

  • Supports bus powered, self powered and high-power bus powered USB configurations.

  • UHCI/OHCI/EHCI host controller compatible.

  • USB Bulk data transfer mode (512 byte packets in Hi-Speed mode).

  • +1.8V (chip core) and +3.3V I/O interfacing (+5V Tolerant).

  • Extended -40°C to 85°C industrial operating temperature range.

  • Compact 64-LD Lead Free LQFP/LQFN package and 56-LD VQFN packages.

  • +3.3V single supply operating voltage range.


Applications Include:

  • Single chip USB to dual channel UART (RS232, RS422 or RS485).

  • Single chip USB to dual channel FIFO.

  • Single chip USB to dual channel JTAG.

  • Single chip USB to dual channel SPI.

  • Single chip USB to dual channel I2C.

  • Single chip USB to dual channel Bit-Bang.

  • Single chip USB to dual combination of any of above interfaces.

  • Single chip USB to Fast Serial Optic Interface.

  • Single chip USB to CPU target interface (as memory), double and independent.

  • Single chip USB to Host Bus Emulation (as CPU).

  • 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 Bar Code Readers

The datasheet can be downloaded from As well, they have information on all the configuration modes, and custom DLL's for the I2C, SPI, and JTAG interfaces. The schematic is the same as the bus powered version on page 51 of the datasheet.

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