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FT221X PDF预览

FT221X

更新时间: 2024-10-29 01:09:43
品牌 Logo 应用领域
飞特帝亚 - FTDI /
页数 文件大小 规格书
45页 984K
描述
The FT221X is a USB to FTDI’s proprietary FT1248 interface with the following advanced features

FT221X 数据手册

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FT221X USB 8-BIT SPI/FT1248 IC Datasheet  
Version 1.3  
Document No.: FT_000630 Clearance No.: FTDI# 263  
Table of Contents  
1
Typical Applications...................................................................... 2  
1.1 Driver Support.................................................................................... 2  
1.2 Part Numbers...................................................................................... 2  
1.3 USB Compliant.................................................................................... 3  
FT221X Block Diagram ................................................................. 4  
Device Pin Out and Signal Description.......................................... 7  
2
3
3.1 20-LD QFN Package ........................................................................... 7  
3.1.1 QFN Package PinOut Description....................................................................................7  
3.2 20-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 ................................................................. 30  
8.1 USB to FT1248 Converter.................................................................. 30  
Internal MTP Memory Configuration........................................... 33  
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9
Copyright © 2013 Future Technology Devices International Limited  
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