FT4232H - High Speed Quad USB to Serial UART

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.

The FT4232H is available in Pb-free (RoHS compliant) 64-pin LQFP and QFN packages.

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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
• +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.

• FT4232H Quad High Speed IC Datasheet

  Datasheet for the FTDI FT4232H Quad High Speed USB to Multipurpose UART/MPSSE IC

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• FT4232H Additional Resources

  Additional resources for the FT4232H are available from the FTDI website

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• FT4232H Mini Module Datasheet

  Datasheet for the FTDI FT4232H Mini Module USB-to-serial/MPSSE interface converter module based on the FT4232H IC.

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• FTDI Application Notes

  FTDI have a wide range of Application Notes covering every aspect of the design process from inspiration to implementation.

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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.

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.