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PDF FT4232H Data sheet ( Hoja de datos )
| Número de pieza | FT4232H | |
| Descripción | Quad High Speed USB to Multipurpose UART/MPSSE IC | |
| Fabricantes | FTDI | |
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Document No.: FT_000060
FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC
Datasheet Version 2.07
Clearance No.: FTDI#78
Future Technology
Devices International Ltd
FT4232H Quad High Speed
USB to Multipurpose
UART/MPSSE IC
The FT4232H is FTDI’s 5th generation
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, I2C, Bit-bang or
other synchronous serial modes. 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, 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.
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
Copyright © 2010 Future Technology Devices International Limited
1
1 page  
Document No.: FT_000060
FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC
Datasheet Version 2.07
Clearance No.: FTDI#78
Table of Contents
1 Typical Applications...................................................................... 2
1.1 Driver Support .................................................................................... 2
1.2 Part Numbers...................................................................................... 3
Note: Packing codes for xxxx is: ................................................................. 3
1.3 USB Compliant .................................................................................... 3
2 FT4232H Block Diagram ............................................................... 4
3 Device Pin Out and Signal Description .......................................... 7
3.1 64-Pin LQFP and 64-Pin QFN Package Schematic Symbol ................... 7
3.2 FT4232H Pin Descriptions ................................................................... 8
3.3 Common Pins .................................................................................... 10
3.4 Configured Pins ................................................................................ 12
3.4.1 FT4232H pins used as an asynchronous serial interface .................................................. 12
3.4.2 FT4232H pins used in a Synchronous or Asynchronous Bit-Bang Interface ........................ 13
3.4.3 FT4232H pins used in an MPSSE .................................................................................. 14
4 Function Description................................................................... 15
4.1 Key Features..................................................................................... 15
4.2 Functional Block Descriptions ........................................................... 15
4.3 FT232 UART Interface Mode Description........................................... 17
4.3.1 RS232 Configuration .................................................................................................. 17
4.3.2 RS422 Configuration .................................................................................................. 18
4.3.3 RS485 Configuration .................................................................................................. 19
4.4 MPSSE Interface Mode Description. .................................................. 20
4.4.1 MPSSE Adaptive Clocking............................................................................................ 21
4.5 Synchronous and Asynchronous Bit-Bang Interface Mode Description
22
4.6 FT4232H Mode Selection................................................................... 24
5 Devices Characteristics and Ratings ........................................... 25
5.1 Absolute Maximum Ratings............................................................... 25
5.2 DC Characteristics............................................................................. 26
6 FT4232H Configurations ............................................................. 29
6.1 USB Bus Powered Configuration ...................................................... 29
6.2 USB Self Powered Configuration ....................................................... 31
6.3 Oscillator Configuration .................................................................... 33
6.4 4 Channel Transmit and Receiver LED Indication Example ............... 34
7 EEPROM Configuration................................................................ 35
8 Package Parameters................................................................... 36
Copyright © 2010 Future Technology Devices International Limited
5
5 Page 
Document No.: FT_000060
FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC
Datasheet Version 2.07
Clearance No.: FTDI#78
Pin No.
Name
Type
Description
2
OSCI
INPUT Oscillator input.
3 OSCO OUTPUT Oscillator output.
6
REF
INPUT
Current reference – connect via a 12K Ohm resistor @ 1% to
GND.
7 DM INPUT USB Data Signal Minus.
8 DP INPUT USB Data Signal Plus.
13
TEST
INPUT IC test pin – for normal operation should be connected to GND.
14 RESET# INPUT Reset input (active low).
Active low power-enable output.
PWREN# = 0: Normal operation.
60
PWREN#
OUTPUT
PWREN# =1 : USB SUSPEND mode or device has not been
configured.
This can be used by external circuitry to power down logic when
device is in USB suspend or has not been configured.
36 SUSPEND# OUTPUT Active low when USB is in suspend mode.
Table 3.3 Common Function pins
Pin No.
63
Name
EECS
Type
I/O
Description
EEPROM – Chip Select. Tri-State during device reset.
62
EECLK OUTPUT Clock signal to EEPROM. Tri-State during device reset. When not in reset,
this outputs the EEPROM clock.
EEDATA I/O EEPROM – Data I/O Connect directly to Data-In of the EEPROM and to
61
Data-Out of the EEPROM via a 2.2K resistor. Also, pull Data-Out of the
EEPROM to VCC via a 10K resistor for correct operation. Tri-State during
device reset.
Table 3.4 EEPROM Interface Group
Copyright © 2010 Future Technology Devices International Limited
11
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