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FT232BL Datasheet PDF : 34 Pages
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Table of Contents
Document No.: FT_000329
FT232BL/BQ USB UART IC Datasheet Version 2.2
Clearance No.: FTDI# 171
1 Typical Applications...................................................................... 2
1.1 Driver Support .................................................................................... 2
1.2 Part Numbers...................................................................................... 2
2 FT232B Block Diagram ................................................................. 3
3 Device Pin Out and Signal Description .......................................... 6
3.1 32 Pin LQFP Package .......................................................................... 6
3.2 32 Pin QFN Package ............................................................................ 7
3.3 LQFP and QFN Package Pin Out Description ........................................ 8
4 Function Description................................................................... 10
4.1 Key Features and Enhancements from FT8U232AM .......................... 10
4.2 Functional Block Descriptions ........................................................... 12
5 Devices Characteristics and Ratings ........................................... 14
5.1 Absolute Maximum Ratings............................................................... 14
5.2 DC Characteristics............................................................................. 15
6 USB Power Configurations.......................................................... 17
6.1 USB Bus Powered Configuration ...................................................... 17
6.2 Self Powered Configuration .............................................................. 18
6.3 Interfacing to 3.3V Logic .................................................................. 19
6.3.1 Bus Powered Circuit with 3.3V logic drive / supply voltage .............................................. 19
6.3.2 Self Powered Circuit with 3.3V logic drive / supply ......................................................... 20
6.4 Bus Powered Circuit (<=100mA) with Power Control....................... 21
7 Device Configuration Examples .................................................. 22
7.1 Oscillator Configurations .................................................................. 22
7.2 EEPROM Configuration ...................................................................... 23
8 UART Interface Configurations ................................................... 24
8.1 USB <=> RS232 Converter Configuration ......................................... 24
8.2 USB <=> RS422 Converter Configuration ......................................... 25
8.3 USB <=> RS485 Converter Configuration ......................................... 26
9 LED Interface Configuration ....................................................... 27
10 Package Parameters ................................................................... 28
10.1 LQFP Package Dimension ............................................................... 28
10.2 QFN Package Dimension ................................................................ 29
11 Contact Information ................................................................... 30
Appendix A – References ........................................................................... 31
Appendix B – List of Figures and Tables .................................................... 32
Copyright © 2011 Future Technology Devices International Limited
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