FTDI FT4232HL Hi-speed USB 2.0 Slave to Quad Channel UART / Serial Converter IC (64-pin LQFP)

The FT4232H is FTDI’s 5th generation of USB devices. The FT4232H is a USB 2.0 Hi-Speed (480Mb/s) to UART IC. It has the capability of being configured in a variety of industry standard serial or parallel interfaces.

The FT4232H features 4 UARTs. Two of these have an option to independently configure an MPSSE engine, this allows the FT4232H to operate as two UART/Bit-Bang ports plus two MPSSE engines used to emulate JTAG, SPI, I2C, Bit-bang or other synchronous serial modes.

The FT4232H is available in Pb-free (RoHS compliant) 64-pin LQFP (FT4232HL) and QFN (FT4232HQ) packages.

Key Hardware 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
• 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 Hi-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 -40ºC to 85ºC industrial operating temperature range
• Compact 64-LD Lead Free LQFP or LQFN package
• +3.3V single supply operating voltage range

Application Areas

• 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

 FT4232H Datasheet