FT221XQ-T FTDI, FT221XQ-T Datasheet - Page 5

• Manufacturer Part Number: FT221XQ-T
• Description: USB Interface IC USB to 8 bit SPI / FT1248 IC QFN-20
• Manufacturer: FTDI

Specifications of FT221XQ-T

• Rohs: yes
• Tradename: X-Chip

Table of Contents
1
2
3
4
5
6
7
8
9
1.1
1.2
1.3
3.1
3.2
3.3
4.1
4.2
5.1
5.2
5.3
5.4
5.5
6.1
6.2
6.3
6.4
6.5
7.1
7.2
7.3
7.4
8.1
3.1.1
3.2.1
5.4.1
Typical Applications ...................................................................... 2
FT221X Block Diagram ................................................................. 4
Device Pin Out and Signal Description .......................................... 7
Function Description................................................................... 12
FT1248 Interface Description. .................................................... 14
Devices Characteristics and Ratings ........................................... 20
USB Power Configurations .......................................................... 26
Application Examples ................................................................. 30
Internal MTP Memory Configuration ........................................... 33
Driver Support .................................................................................... 2
Part Numbers...................................................................................... 2
USB Compliant .................................................................................... 3
20-LD QFN Package ........................................................................... 7
20-LD SSOP Package.......................................................................... 9
CBUS Signal Options ......................................................................... 11
Key Features ..................................................................................... 12
Functional Block Descriptions ........................................................... 12
Determining the Dynamic Bus Width ................................................ 14
Supported Commands on the FT1248 Interface ................................ 15
LSB or MSB Selection ........................................................................ 16
Clock Phase/Polarity ........................................................................ 16
FT1248 Timing .................................................................................. 18
Absolute Maximum Ratings............................................................... 20
ESD and Latch-up Specifications ....................................................... 20
DC Characteristics............................................................................. 21
MTP Memory Reliability Characteristics ............................................ 25
Internal Clock Characteristics ........................................................... 25
USB Bus Powered Configuration ...................................................... 26
Self Powered Configuration .............................................................. 27
USB Bus Powered with Power Switching Configuration .................... 28
USB Battery Charging Detection ....................................................... 29
USB to FT1248 Converter .................................................................. 30
QFN Package PinOut Description .................................................................................... 7
SSOP Package PinOut Description .................................................................................. 9
CPHA = 1 ................................................................................................................. 17
Copyright © 2013 Future Technology Devices International Limited
Document No.: FT_000630 Clearance No.: FTDI# 263
Version 1.2
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