FT4232H - High Speed Quad USB to Serial UART IC

The FTDI FT4232H is a USB 2.0 Hi-Speed (480Mb/s) to UART/MPSSE IC which is capable of being configured in a variety of industry standard serial or parallel interfaces. The FT4232H is a quad channel device allowing one USB port to connect to four separate interfaces without a USB hub chip.

The FTDI FT4232H is a quad channel device allowing one USB port to connect to four separate interfaces without a USB hub chip. Each channel may be independently configured to support UART, FIFO (asynchronous) or, by using the Multi Purpose Synchronous Serial Engine (MPSSE - available on 2 of the channels), USB to I2C, 2SPI, JTAG or other clocked serial interfaces. Also  available are MCU Emulation and bitbang modes.

The FT4232H device supports UART transfer rates up to 12MBaud and asynchronous FIFO speeds up to 10Mbyte/s.

As with previous generations of FTDI ICs, comprehensive and free driver support is offered for most industry standard operating systems such as Windows, Linux and MAC OSX. This allows developers to focus on their end application rather than spending additional time developing drivers.

Key Features:

  • Single chip USB to quad serial 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.
  • Two Multi-Protocol Synchronous Serial Engine (MPSSE) on channel A and channel B, to simplify synchronous serial protocol (USB to JTAG, I2C, SPI or bit-bang) design.
  • FTDI's royalty-free Virtual Com Port (VCP) and Direct (D2XX) drivers eliminate the requirement for USB driver development in most cases.
  • Highly integrated design includes +1.8V LDO regulator for VCORE, integrated POR function and on chip clock multiplier PLL (12MHz - 480MHz).
  • Low operating and USB suspend current.
  • Dedicated Windows DLLs available for USB to JTAG, USB to SPI, and USB to I2C applications.
  • +1.8V (chip core) and +3.3V I/O interfacing (+5V Tolerant).
  • Extended -40ºC to 85ºC industrial operating temperature range.
  • Compact 64-LD Lead Free LQFP or LQFN package and a 56-pin VQFN package.
  • +3.3V single supply operating voltage range.

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  • Single chip USB to quad serial 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.
  • Two Multi-Protocol Synchronous Serial Engine (MPSSE) on channel A and channel B, to simplify synchronous serial protocol (USB to JTAG, I2C, SPI or bit-bang) design.
  • Independent Baud rate generators.
  • RS232/RS422/RS485 UART Transfer Data Rate up to 12Mbaud. (RS232 Data Rate limited by external level shifter).
  • FTDI's royalty-free Virtual Com Port (VCP) and Direct (D2XX) drivers eliminate the requirement for USB driver development in most cases.
  • Optional traffic TX/RX indicators can be added with LEDs and an external 74HC595 shift register.
  • Adjustable receive buffer timeout.
  • Support for USB suspend and resume conditions via PWREN#, SUSPEND# and RI# pins.
  • Highly integrated design includes +1.8V LDO regulator for VCORE, integrated POR function and on chip clock multiplier PLL (12MHz - 480MHz).
  • FTDI FT232B style, 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.
  • Low operating and USB suspend current.
  • Configurable I/O drive strength (4,8,12 or 16mA) and slew rate.
  • 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 High Speed mode).
  • Dedicated Windows DLLs available for USB to JTAG, USB to SPI, and USB to I2C applications.
  • +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 or QFN package or 56-pin VQFN package
  • +3.3V single supply operating voltage range.
  • ESD protection for FT4232H IO's:
    • Human Body Model (HBM) ±2kV,
    • Machine Mode (MM) ±200V,
    • Charge Device Model (CDM) ±500V,
    • Latch-up free.
  • Single chip USB to four channels UART (RS232,RS422 or RS485) or Bit-Bang interfaces.
  • Single chip USB to 2 JTAG channels plus 2 UARTs.
  • Single chip USB to 1 JTAG channel plus 3 UARTs.
  • Single chip USB to 1 SPI channel plus 3 UARTs.
  • Single chip USB to 2 SPI channels plus 2 UARTs.
  • Single chip USB to 2 Bit-Bang channels plus 2 UARTs.
  • Single chip USB to 1 SPI channel, plus 1 JTAG channel plus 2 UARTs.
  • Single chip USB to 2 I2C channels plus 2 UARTs.
  • Numerous combinations of 4 channels.
  • Upgrading Legacy Peripheral Designs to USB.
  • Field Upgradable USB Products.
  • Galvanic Isolated Products with USB Interface.
  • 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 Bar Code Readers.
Part  Number Package Pack Size
FT4232HL/TR 64-pin LQFP Reel of 1000
FT4232HL-TRAY 64-pin LQFP Tray of 160
FT4232H-56Q-REEL 56-pin VQFN Reel of 3000
FT4232HQ/TR 64-pin QFN Reel of 4000
FT4232H-56Q-TRAY 56-pin VQFN Tray of 260
FT4232HQ-TRAY 64-pin QFN Tray of 260
FT4232H-56Q Mini Module 2 x 26-pin dual row headers Each
FT4232H Mini Module 2 x 26-pin dual row headers Each


The FT4232H Mini Module is a USB-to-serial/MPSSE interface converter module based on the FT4232H IC. The FT4232H bridge chip supports USB Hi-Speed transfers and handles all the USB protocol. The development module provides access to the quad channel serial / MPSSE converter interfaces via a set of 2 double row 0.1" pitch male connectors.  It is ideal for development purposes to quickly prove functionality of adding USB to a target design.

FTDI offer two versions of the FT4232H Mini Module:

FT4232HQ Mini Module

For the 64-pin version of the FT4232H

AlphaMicro_FTDI_FT4232H-Mini-Module_300px

 

FT4232H-56Q Mini Module

For the 56-pin version of the FT4232H

AlphaMicro_FTDI_FT4232H-56Q_MiniModule_300px

Versatile Range of Evaluation Kits
FTDI evaluation modules and kits
represent an quick and easy introduction to understanding USB. In most cases you you can be up and running in less than 30 minutes.

Volume pricing is also available which is flexible enough to allow you to 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 FT232 so that your end user will see your product and brand 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. 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: 15 June 2016