Datasheet

Document No.: FT_000053

FT232R USB UART IC Datasheet Version 2.02

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 .................................................................................... 2

2 FT232R Block Diagram .................................................................... 3

3 Device Pin Out and Signal Description ............................................ 6

3.1 28-LD SSOP Package .......................................................................... 6

3.2 SSOP Package Pin Out Description ...................................................... 6

3.3 QFN-32 Package ................................................................................. 9

3.4 QFN-32 Package Signal Description .................................................... 9

3.5 CBUS Signal Options ......................................................................... 12

4 Function Description ..................................................................... 13

4.1 Key Features ..................................................................................... 13

4.2 Functional Block Descriptions ........................................................... 14

5 Devices Characteristics and Ratings .............................................. 16

5.1 Absolute Maximum Ratings............................................................... 16

5.2 DC Characteristics............................................................................. 17

5.3 EEPROM Reliability Characteristics ................................................... 20

5.4 Internal Clock Characteristics ........................................................... 20

6 USB Power Configurations ............................................................ 22

6.1 USB Bus Powered Configuration ...................................................... 22

6.2 Self Powered Configuration .............................................................. 23

6.3 USB Bus Powered with Power Switching Configuration .................... 24

6.4 USB Bus Powered with Selectable External Logic Supply .................. 25

7 Application Examples .................................................................... 26

7.1 USB to RS232 Converter ................................................................... 26

7.2 USB to RS485 Coverter ..................................................................... 27

7.3 USB to RS422 Converter ................................................................... 28

7.4 USB to MCU UART Interface .............................................................. 29

7.5 LED Interface .................................................................................... 30

7.6 Using the External Oscillator ............................................................ 31

8 Internal EEPROM Configuration .................................................... 32

9 Package Parameters ..................................................................... 34

9.1 SSOP-28 Package Dimensions .......................................................... 34