Copyright © 2014 Future Technology Devices International Limited

5

FT201X USB I2C SLAVE IC Datasheet

Version 1.4

Document No.: FT_000627 Clearance No.: FTDI# 264

Table of Contents

1

Typical Applications...................................................................... 2

1.1

Driver Support .................................................................................... 2

1.2

Part Numbers...................................................................................... 2

1.3

USB Compliant .................................................................................... 3

2

FT201X Block Diagram ................................................................. 4

3

Device Pin Out and Signal Description.......................................... 7

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

Function Description................................................................... 13

4.1

Key Features..................................................................................... 13

4.2

Functional Block Descriptions ........................................................... 13

5

I2C Interface Description............................................................ 15

6

Devices Characteristics and Ratings ........................................... 16

6.1

Absolute Maximum Ratings............................................................... 16

6.2

ESD and Latch-up Specifications....................................................... 16

6.3

DC Characteristics............................................................................. 17

6.4

MTP Memory Reliability Characteristics ............................................ 21

6.5

Internal Clock Characteristics........................................................... 21

7

USB Power Configurations.......................................................... 22

7.1

USB Bus Powered Configuration ...................................................... 22

7.2

Self Powered Configuration .............................................................. 23

7.3

USB Bus Powered with Power Switching Configuration .................... 24

8

Application Examples ................................................................. 25

8.1

USB to I2C Converter......................................................................... 25

8.2

USB Battery Charging Detection ....................................................... 26

9

USB and I2C Interfacing ............................................................. 29

9.1

Host Interface (USB) ........................................................................ 29

9.1.1

VCP and D2xx Interfaces ............................................................................................ 29

9.1.2

Reading and Writing Data ........................................................................................... 30

9.2

I2C Interface..................................................................................... 31

9.2.1

Addressing................................................................................................................ 31

9.2.2

Data Transfers .......................................................................................................... 31