Document No.: FT_000288
FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC
Datasheet Version 1.81
Clearance No.: FTDI #199
Future Technology
Devices International Ltd
FT232H
Single Channel Hi-
Speed USB to Multipurpose
UART/FIFO IC
The FT232H is a single channel USB 2.0 Hi-
Speed (480Mb/s) to UART/FIFO IC. It has the
capability of being configured in a variety of
industry standard serial or parallel interfaces.
The FT232H has the following advanced
features:
Single channel USB to serial / parallel ports
with a variety of configurations.
Entire USB protocol handled on the chip. No
USB specific firmware programming required.
USB 2.0 Hi-Speed (480Mbits/Second) and Full
Speed (12Mbits/Second) compatible.
Multi-Protocol
Synchronous
Serial
Engine
(MPSSE) to simplify synchronous serial protocol
(USB to JTAG, I
2
C, SPI (MASTER) or bit-bang)
design.
UART transfer data rate up to 12Mbaud.
(RS232 Data Rate limited by external level
shifter).
USB to asynchronous 245 FIFO mode for
transfer data rate up to 8 Mbyte/Sec.
USB to synchronous 245 parallel FIFO mode for
transfers upto 40 Mbytes/Sec
Supports a proprietary half duplex FT1248
interface with a configurable width, bi-
directional data bus (1, 2, 4 or 8 bits wide).
CPU-style FIFO interface mode simplifies CPU
interface design.
Fast serial interface option.
FTDI’s royalty-free Virtual Com Port (VCP) and
Direct
(D2XX)
drivers
eliminate
the
requirement for USB driver development in
most cases.
Adjustable receive buffer timeout.
Option for transmit and receive LED drive
signals.
Bit-bang Mode interface option with RD# and
WR# strobes
Highly integrated design includes 5V to
3.3/+1.8V LDO regulator for VCORE, integrated
POR function
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 the TXDEN pin.
Operational mode configuration and USB
Description strings configurable in external
EEPROM over the USB interface.
Configurable I/O drives strength (4, 8, 12 or
16mA) and slew rate.
Low operating and USB suspend current.
Supports self powered, bus 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).
+1.8V (chip core) and +3.3V I/O interfacing
(+5V Tolerant).
Extended -40°C to 85°C industrial operating
temperature range.
Compact 48-pin Lead Free LQFP or QFN
package
Configurable ACBUS I/O pins.
Copyright © 2014 Future Technology Devices International Limited
1
Document No.: FT_000288
FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC
Datasheet Version 1.81
Clearance No.: FTDI #199
1
Typical Applications
Single chip USB to UART (RS232, RS422 or
RS485)
USB to FIFO
USB to FT1248
USB to JTAG
USB to SPI
USB to I
2
C
USB to Bit-Bang
USB to Fast Serial Interface
USB to CPU target interface (as memory)
USB Instrumentation
USB Industrial Control
USB EPOS Control
USB MP3 Player Interface
USB FLASH Card Reader / Writers
Set Top Box - USB interface
USB Digital Camera Interface
USB Bar Code Readers
1.1 Driver Support
The FT232H requires USB device drivers (listed below), available free from
http://www.ftdichip.com,
to operate. The VCP version of the driver creates a Virtual COM Port allowing legacy serial port
applications to operate over USB e.g. serial emulator application TTY. Another FTDI USB driver, the D2XX
driver, can also be used with application software to directly access the FT232H through a DLL.
Royalty free VIRTUAL COM PORT
(VCP) DRIVERS for...
Windows 8 and Windows 8 64-bit
Windows 7 and Windows 7 64-bit
Windows Vista and Vista 64-bit
Windows XP and XP 64-bit
Windows XP Embedded
Windows 2000, Server 2003, Server 2008
Windows CE 4.2, 5.0, 5.2 and 6.0
Mac OS-X
Linux (2.6.39 or later)
Royalty free D2XX
Direct
Drivers
(USB Drivers + DLL S/W Interface)
Windows 8 and Windows 8 64-bit
Windows 7 and Windows 7 64-bit
Windows Vista and Vista 64-bit
Windows XP and XP 64-bit
Windows XP Embedded
Windows 2000, Server 2003, Server 2008
Windows CE 4.2, 5.0, 5.2 and 6.0
Mac OS-X
Linux (2.6.32 or later)
1.2 Part Numbers
Part Number
FT232HL -xxxx
FT232HQ-xxxx
Note: Packaging codes for xxxx is:
- Reel: Taped and Reel (LQFP = 1500 pieces per reel, QFN = 3000 pieces per reel)
-Tray: Tray packing, (LQFP =
250 pieces per tray, QFN =260 pieces per tray)
Package
48 Pin LQFP
48 Pin QFN
Please refer to section 8 for all package mechanical parameters.
Copyright © 2014 Future Technology Devices International Limited
2
Document No.: FT_000288
FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC
Datasheet Version 1.81
Clearance No.: FTDI #199
1.3 USB Compliant
The FT232H is fully compliant with the USB 2.0 specification and has been given the USB-IF Test-ID
(TID) 40770005.
The timing of the rise/fall time of the USB signals is not only dependant on the USB signal drivers, it is
also dependant system and is affected by factors such as PCB layout, external components and any
transient protection present on the USB signals. For USB compliance these may require a slight
adjustment. This timing can be modified through a programmable setting stored in the same external
EEPROM that is used for the USB descriptors. Timing can also be changed by adding appropriate passive
components to the USB signals.
1.4 Applicable Documents
The following application and technical documents can be downloaded by clicking on the appropriate links
below:
AN_108 – Command Processor For MPSSE and MCU Host Bus Emulation Modes
AN_113 – Interfacing FT2232H Hi-Speed Devices To I2C Bus
AN_114 – Interfacing FT2232H Hi-Speed Devices To SPI Bus
AN_129 – Interfacing FT2232H Hi-Speed Devices to a JTAG TAP
AN_135 – MPSSE Basics
AN_167_FT1248 Parallel Serial Interface Basics
Copyright © 2014 Future Technology Devices International Limited
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Document No.: FT_000288
FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC
Datasheet Version 1.81
Clearance No.: FTDI #199
2
FT232H Block Diagram
Figure 2.1 FT232H Block Diagram
A full description of each function is available in section 4.
Copyright © 2014 Future Technology Devices International Limited
4
Document No.: FT_000288
FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC
Datasheet Version 1.81
Clearance No.: FTDI #199
Table of Contents
1
1.1
1.2
Typical Applications ...................................................................... 2
Driver Support .................................................................................... 2
Part Numbers...................................................................................... 2
USB Compliant ....................................................................................... 3
1.3 ............................................................................................................... 3
1.4
Applicable Documents ........................................................................ 3
2
3
3.1
3.2
3.3
3.4
3.5
FT232H Block Diagram ................................................................. 4
Device Pin Out And Signal Descriptions ........................................ 7
Schematic Symbol............................................................................... 7
FT232H Pin Descriptions .................................................................... 8
Signal Description ............................................................................... 9
ACBUS Signal Option ......................................................................... 13
Pin Configurations ............................................................................ 14
FT232H pins used in an UART interface......................................................................... 14
FT232H pins used in an FT245 Synchronous FIFO Interface ............................................. 15
FT232H pins used in an FT245 Style Asynchronous FIFO Interface ................................... 16
FT232H can be configured as a Synchronous or Asynchronous Bit-Bang Interface. ............. 17
FT232H pins used in an MPSSE .................................................................................... 18
FT232H Pins used as a Fast Serial Interface .................................................................. 19
FT232H Pins Configured as a CPU-style FIFO Interface ................................................... 20
FT232H Pins Configured as a FT1248 Interface .............................................................. 21
3.5.1
3.5.2
3.5.3
3.5.4
3.5.5
3.5.6
3.5.7
3.5.8
4
4.1
4.2
4.3
Function Description................................................................... 22
Key Features ..................................................................................... 22
Functional Block Descriptions ........................................................... 23
FT232 UART Interface Mode Description........................................... 24
RS232 Configuration .................................................................................................. 24
RS422 Configuration .................................................................................................. 25
RS485 Configuration .................................................................................................. 26
4.3.1
4.3.2
4.3.3
4.4
4.4.1
4.4.2
FT245 Synchronous FIFO Interface Mode Description ...................... 27
FT245 Synchronous FIFO Read Operation ..................................................................... 28
FT245 Synchronous FIFO Write Operation ..................................................................... 28
4.5
4.6
4.6.1
4.6.2
FT245 Style Asynchronous FIFO Interface Mode Description ............ 29
FT1248 Interface Mode Description .................................................. 30
Bus Width Protocol Decode ......................................................................................... 31
FT1248: 1-bit interface ............................................................................................... 32
4.7
4.7.1
Synchronous and Asynchronous Bit-Bang Interface Mode ................ 34
Asynchronous Bit-Bang Mode ...................................................................................... 34
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