FT220X USB 4-BIT SPI/FT1248 IC Datasheet
Version 1.3
Document No.: FT_000629 Clearance No.: FTDI# 262
Table of Contents
1
Typical Applications...................................................................... 2
1.1 Driver Support.................................................................................... 2
1.2 Part Numbers...................................................................................... 2
1.3 USB Compliant.................................................................................... 3
FT220X Block Diagram ................................................................. 4
Device Pin Out and Signal Description.......................................... 7
2
3
3.1 16-LD QFN Package ........................................................................... 7
3.1.1 QFN Package PinOut Description....................................................................................7
3.2 16-LD SSOP Package.......................................................................... 9
3.2.1 SSOP Package PinOut Description..................................................................................9
3.3 CBUS Signal Options ......................................................................... 11
4
5
Function Description................................................................... 12
4.1 Key Features..................................................................................... 12
4.2 Functional Block Descriptions........................................................... 12
FT1248 Interface Description..................................................... 14
5.1 Determining the Dynamic Bus Width ................................................ 14
5.2 Supported Commands on the FT1248 Interface................................ 15
5.3 LSB or MSB Selection........................................................................ 16
5.4 Clock Phase/Polarity ........................................................................ 16
5.4.1 CPHA = 1 ................................................................................................................. 17
5.5 FT1248 Timing.................................................................................. 18
6
7
Devices Characteristics and Ratings........................................... 20
6.1 Absolute Maximum Ratings............................................................... 20
6.2 ESD and Latch-up Specifications....................................................... 20
6.3 DC Characteristics............................................................................. 21
6.4 MTP Memory Reliability Characteristics ............................................ 25
6.5 Internal Clock Characteristics........................................................... 25
USB Power Configurations.......................................................... 26
7.1 USB Bus Powered Configuration ...................................................... 26
7.2 Self Powered Configuration .............................................................. 27
7.3 USB Bus Powered with Power Switching Configuration .................... 28
7.4 USB Battery Charging Detection ....................................................... 29
Application Examples ................................................................. 31
8.1 USB to FT1248 Converter.................................................................. 31
Internal MTP Memory Configuration........................................... 34
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9
Copyright © 2013 Future Technology Devices International Limited
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