Datasheet FT232R (FTDI) - 5

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Document No.: FT_000053 FT232R USB UART IC Datasheet Version 2.11 Clearance No.: FTDI# 38 Table of Contents 1 Typical Applications .. 2 1.1 Driver Support .. 2 1.2 Part Numbers.. 2 Note: Packing codes for xxxx is: .. 2 1.3 USB Compliant .. 3 2 FT232R Block Diagram .. 4 3 Device Pin Out and Signal Description .. 7 3.1 28-LD SSOP Package .. 7 3.2 SSOP Package Pin Out Description .. 7 3.3 QFN-32 Package ... 10 3.4 QFN-32 Package Signal Description .. 10 3.5 CBUS Signal Options ... 13 4 Function Description ... 14 4.1 Key Features ... 14 4.2 Functional Block Descriptions ... 15 5 Devices Characteristics and Ratings .. 17 5.1 Absolute Maximum Ratings... 17 5.2 DC Characteristics... 18 5.3 EEPROM Reliability Characteristics ... 21 5.4 Internal Clock Characteristics ... 21 5.5 Thermal Characteristics .. 22 6 USB Power Configurations .. 23 6.1 USB Bus Powered Configuration .. 23 6.2 Self Powered Configuration .. 24 6.3 USB Bus Powered with Power Switching Configuration .. 25 6.4 USB Bus Powered with Selectable External Logic Supply .. 26 7 Application Examples .. 28 7.1 USB to RS232 Converter ... 28 7.2 USB to RS485 Coverter ... 29 7.3 USB to RS422 Converter ... 30 7.4 USB to MCU UART Interface .. 31 7.5 LED Interface .. 32 7.6 Using the External Oscillator .. 33
Copyright © 2010 Future Technology Devices International Limited 5 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