Copyright © 2009 Future Technology Devices International Limited

1

Document No.: FT_000060

FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC

Datasheet Version 2.05

Clearance No.: FTDI#78

Future Technology

Devices International Ltd

FT4232H Quad High Speed

USB to Multipurpose

The FT4232H is FTDI’s 5

of USB devices. The FT4232H is a USB

2.0

High

Speed

(480Mb/s)

to

UART/MPSSE ICs. The device 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, I

The

FT4232H has the following advanced

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, I

•

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 I

•

+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.

Neither the whole nor any part of the information contained in, or the product described in this manual, may be adapted or reproduced in any material or

electronic form without the prior written consent of the copyright holder. This product and its documentation are supplied on an as-is basis and no warranty

as to their suitability for any particular purpose is either made or implied. Future Technology Devices International Ltd will not accept any claim for damages

howsoever arising as a result of use or failure of this product. Your statutory rights are not affected. This product or any variant of it is not intended for use

in any medical appliance, device or system in which the failure of the product might reasonably be expected to result in personal injury. This document

provides preliminary information that may be subject to change without notice. No freedom to use patents or other intellectual property rights is implied by

the publication of this document. Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow G41 1HH

United Kingdom. Scotland Registered Company Number: SC136640