FT4222H USB2.0 TO QUADSPI/I2C BRIDGE IC
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Document No.: FT_001011 Clearance No.: FTDI#405
Table of Contents
1 Typical Applications....................................................... 2
1.1 Driver Support ........................................................................... 2
1.2 Ordering Information................................................................. 2
1.3 USB Compliant ........................................................................... 3
2 FT4222H Block Diagram ................................................ 4
3 Device Pin Out and Signal Description........................... 7
3.1 VQFN-32 Package Pin Out.......................................................... 7
3.2 Pin Description .......................................................................... 8
4 Function Description ................................................... 10
4.1 Key Features............................................................................ 10
4.2 Functional Block Descriptions .................................................. 11
5 FT4222H Chip Mode Configuration and SPI/I2C Interface
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5.1 Chip Mode Configuration.......................................................... 14
5.2 SPI Bus Interface..................................................................... 15
5.2.1
5.2.2
5.2.3
5.2.4
SPI Pin Definition ...................................................................................... 15
SPI Bus Protocol ....................................................................................... 15
SCK Format.............................................................................................. 17
SPI Timing ............................................................................................... 18
5.3 I2C Bus Interface ..................................................................... 20
5.3.1
5.3.2
5.3.3
5.3.4
I2C Pin Definition....................................................................................... 20
I2C Bus Protocol........................................................................................ 20
I2C Slave Address...................................................................................... 21
I2C Timing................................................................................................ 21
5.4 GPIOs ...................................................................................... 23
6 Devices Characteristics and Ratings............................ 24
6.1 Absolute Maximum Ratings...................................................... 24
6.2 ESD and Latch-up Specifications.............................................. 24
6.3 DC Characteristics.................................................................... 25
6.4 OTP Memory Reliability Characteristics.................................... 30
7 FT4222H Configurations.............................................. 31
7.1 USB Bus Powered Configuration ............................................. 31
7.2 Self Powered Configuration with 5V Source Input ................... 32
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