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Document No.: FT_000053

FT232R USB UART IC Datasheet Version 2.02

Clearance No.: FTDI# 38

Future Technology Devices

International Ltd

FT232R USB UART IC

The FT232R is a USB to serial UART

interface with the following advanced

features:

• Single chip USB to asynchronous serial data

transfer interface.

• Entire USB protocol handled on the chip. No

USB specific firmware programming required.

• Fully integrated 1024 bit EEPROM storing

device descriptors and CBUS I/O configuration.

• Fully integrated USB termination resistors.

• Fully integrated clock generation with no

external crystal required plus optional clock

output selection enabling a glue-less interface

to external MCU or FPGA.

• Data transfer rates from 300 baud to 3 Mbaud

(RS422, RS485, RS232 ) at TTL levels.

• 256 byte receive buffer and 128 byte transmit

buffer utilising buffer smoothing technology to

allow for high data throughput.

• FTDI’s royalty-free Virtual Com Port (VCP) and

Direct (D2XX) drivers eliminate the

requirement for USB driver development in

most cases.

• Unique USB FTDIChip-ID™ feature.

• Configurable CBUS I/O pins.

• Transmit and receive LED drive signals.

• UART interface support for 7 or 8 data bits, 1

or 2 stop bits and odd / even / mark / space /

no parity

• FIFO receive and transmit buffers for high data

throughput.

• Synchronous and asynchronous bit bang

interface options with RD# and WR# strobes.

• Device supplied pre-programmed with unique

USB serial number.

• Supports bus powered, self powered and high-

power bus powered USB configurations.

• Integrated +3.3V level converter for USB I/O.

• Integrated level converter on UART and CBUS

for interfacing to between +1.8V and +5V

logic.

• True 5V/3.3V/2.8V/1.8V CMOS drive output

and TTL input.

• Configurable I/O pin output drive strength.

• Integrated power-on-reset circuit.

• Fully integrated AVCC supply filtering - no

external filtering required.

• UART signal inversion option.

• +3.3V (using external oscillator) to +5.25V

(internal oscillator) Single Supply Operation.

• Low operating and USB suspend current.

• Low USB bandwidth consumption.

• UHCI/OHCI/EHCI host controller compatible.

• USB 2.0 Full Speed compatible.

• -40°C to 85°C extended operating temperature

range.

• Available in compact Pb-free 28 Pin SSOP and

QFN-32 packages (both RoHS compliant).

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

produced

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

1 2 3 4 5 6 ... 40 41

Inhaltsverzeichnis

Seite 1 - FT232R USB UART IC

Seite 2 - 1.3 USB Compliant

Seite 3 - 2 FT232R Block Diagram

Seite 4 - Table of Contents

Seite 5

Seite 6 - 3.1 28-LD SSOP Package

Seite 7

Seite 8

Seite 9 - 3.3 QFN-32 Package

Seite 10

Seite 11

Seite 12 - 3.5 CBUS Signal Options

Seite 13 - 4.1 Key Features

Seite 14 - Figure 2.1

Seite 15

Seite 16 - Parameter Value Unit

Seite 17 - 5.2 DC Characteristics

Seite 18

Seite 19

Seite 20

Seite 21 - Units Conditions

Seite 22 - 6 USB Power Configurations

Seite 23

Seite 24

Seite 25 - External Logic

Seite 26 - 7.1 USB to RS232 Converter

Seite 27 - 7.2 USB to RS485 Coverter

Seite 28 - 7.3 USB to RS422 Converter

Seite 29

Seite 30 - 7.5 LED Interface

Seite 31 - This EEPROM modification

Seite 32 - Parameter Value Notes

Seite 33

Seite 34 - 9 Package Parameters

Seite 35 - Dimensions in mm

Seite 36

Seite 37 - Time, t (seconds)

Seite 38 - 10 Contact Information

Seite 39

Seite 40

Seite 41

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