FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC
Datasheet
Version 2.4
Document No.: FT_000060 Clearance No.: FTDI#78
Table of Contents
1 Typical Applications .......................................................... 2
1.1 Driver Support ............................................................................. 2
1.2 Part Numbers............................................................................... 3
1.3 USB Compliant ............................................................................. 3
2 FT4232H Block Diagram.................................................... 4
3 Device Pin Out and Signal Description............................... 7
3.1 64-pin LQFP and QFN Package..................................................... 7
3.1.1 Schematic Symbol .............................................................................7
3.1.2 Pin Descriptions.................................................................................8
3.1.3 Common Pins....................................................................................9
3.1.4 Configured Pins ...............................................................................11
3.1.4.1 FT4232H pins used as an asynchronous serial interface....................................... 11
3.1.4.2 FT4232H pins used in a Synchronous or Asynchronous Bit-Bang Interface............. 12
3.1.4.3 FT4232H pins used in an MPSSE ...................................................................... 13
3.2 56-pin VQFN Package ................................................................ 14
3.2.1 Schematic Symbol for FT4232H-56Q..................................................14
3.2.2 Pin Descriptions for FT4232H-56Q......................................................15
3.2.3 Common Pins for FT4232H-56Q.........................................................16
3.2.4 Configured Pins for FT4232H-56Q......................................................17
3.2.4.1 FT4232H-56Q pins used as an asynchronous serial interface................................ 17
3.2.4.2 FT4232H-56Q pins used in a Synchronous or Asynchronous Bit-Bang Interface...... 18
3.2.4.3 FT4232H-56Q pins used in an MPSSE ............................................................... 19
4 Function Description ....................................................... 20
4.1 Key Features.............................................................................. 20
4.2 Functional Block Descriptions .................................................... 20
4.3 FT232 UART Interface Mode Description.................................... 22
4.3.1 RS232 Configuration ........................................................................22
4.3.2 RS422 Configuration ........................................................................23
4.3.3 RS485 Configuration ........................................................................24
4.4 MPSSE Interface Mode Description ............................................ 25
4.4.1 MPSSE Adaptive Clocking..................................................................27
4.5 Synchronous & Asynchronous Bit-Bang Interface Mode Desc. ... 28
4.5.1 Asynchronous Bit-Bang Mode ............................................................28
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