Download Maxim USBTO232 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
4
5
6
7
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
Function Description ..................................................................... 13
4.1
Key Features ..................................................................................... 13
4.2
Functional Block Descriptions ........................................................... 14
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
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
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
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