Datasheet FT232R (FTDI)

Document No.: FT_000053 FT232R USB UART IC Datasheet Version 2.11 Clearance No.: FTDI# 38 Future Technology Devices International Ltd
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FT232R USB UART IC
The FT232R is a USB to serial UART FIFO receive and transmit buffers for high data interface with the following advanced throughput. features: Synchronous and asynchronous bit bang interface options with RD# and WR# strobes. Single chip USB to asynchronous serial data transfer interface. Device supplied pre-programmed with unique USB serial number. Entire USB protocol handled on the chip. No USB specific firmware programming required. Supports bus powered, self powered and high- power bus powered USB configurations. Fully integrated 1024 bit EEPROM storing device descriptors and CBUS I/O configuration. Integrated +3.3V level converter for USB I/O. Integrated level converter on UART and CBUS Fully integrated USB termination resistors. for interfacing to between +1.8V and +5V Fully integrated clock generation with no logic. external crystal required plus optional clock output selection enabling a glue-less interface True 5V/3.3V/2.8V/1.8V CMOS drive output to external MCU or FPGA. and TTL input. Configurable I/O pin output drive strength. Data transfer rates from 300 baud to 3 Mbaud (RS422, RS485, RS232 ) at TTL levels. Integrated power-on-reset circuit. 128 byte receive buffer and 256 byte transmit Fully integrated AVCC supply filtering - no buffer utilising buffer smoothing technology to external filtering required. allow for high data throughput. UART signal inversion option. FTDI’s royalty-free Virtual Com Port (VCP) and Direct (D2XX) drivers eliminate the +3.3V (using external oscillator) to +5.25V requirement for USB driver development in (internal oscillator) Single Supply Operation. most cases. Low operating and USB suspend current. Unique USB FTDIChip-ID™ feature. Low USB bandwidth consumption. Configurable CBUS I/O pins. UHCI/OHCI/EHCI host controller compatible. Transmit and receive LED drive signals. USB 2.0 Full Speed compatible. UART interface support for 7 or 8 data bits, 1 -40°C to 85°C extended operating temperature or 2 stop bits and odd / even / mark / space / range. no parity 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 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 Document Outline 1 Typical Applications 1.1 Driver Support 1.2 Part Numbers Note: Packing codes for xxxx is: 1.1 1.1 1.3 USB Compliant 2 FT232R Block Diagram 3 Device Pin Out and Signal Description 3.1 28-LD SSOP Package 3.2 SSOP Package Pin Out Description 3.3 QFN-32 Package 3.4 QFN-32 Package Signal Description 3.5 CBUS Signal Options 4 Function Description 4.1 Key Features 4.2 Functional Block Descriptions 5 Devices Characteristics and Ratings 5.1 Absolute Maximum Ratings 5.2 DC Characteristics 5.3 EEPROM Reliability Characteristics 5.4 Internal Clock Characteristics 5.5 Thermal Characteristics 6 USB Power Configurations 6.1 USB Bus Powered Configuration 1.1 1.1 6.2 Self Powered Configuration 6.3 USB Bus Powered with Power Switching Configuration 6.4 USB Bus Powered with Selectable External Logic Supply 7 Application Examples 7.1 USB to RS232 Converter 7.2 USB to RS485 Coverter 1.1 1.1 1.1 7.3 USB to RS422 Converter 7.4 USB to MCU UART Interface 1.1 1.1 1.1 7.5 LED Interface 7.6 Using the External Oscillator 8 Internal EEPROM Configuration 9 Package Parameters 9.1 SSOP-28 Package Dimensions 9.2 QFN-32 Package Dimensions 9.3 QFN-32 Package Typical Pad Layout 1.1 9.4 QFN-32 Package Typical Solder Paste Diagram 9.5 Solder Reflow Profile 10 Alternative Parts 11 Contact Information Appendix A – References Appendix B - List of Figures and Tables Appendix C - Revision History