FT240X datasheet(5/40 Pages) ETC2

Part #	FT240X

Description	Future Technology Devices International Ltd

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FT240X USB 8-BIT FIFO IC Datasheet

Version 1.3

Document No.: FT_000626 Clearance No.:

FTDI# 259

Table of Contents

1

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

1.1

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

1.2

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

1.3

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

2

FT240X Block Diagram ................................................................. 4

3

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

3.1

24-LD SSOP Package .......................................................................... 7

3.2

SSOP Package Pin Out Description...................................................... 7

3.3

QFN-24 Package ................................................................................. 9

3.4

QFN-24 Package Signal Description .................................................... 9

3.5

CBUS Signal Options ......................................................................... 11

3.6

FT240X FIFO READ Timing Diagrams ................................................ 12

3.7

FT240X FIFO WRITE Timing Diagrams .............................................. 13

4

Function Description................................................................... 14

4.1

Key Features..................................................................................... 14

4.2

Functional Block Descriptions ........................................................... 15

5

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

5.1

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

5.2

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

5.3

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

5.4

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

5.5

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

6

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

6.1

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

6.2

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

6.3

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

7

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

7.1

USB to MCU FIFO Interface ............................................................... 25

7.2

Battery Charge Detection.................................................................. 26

8

Internal MTP Memory Configuration........................................... 28

8.1

Default Values .................................................................................. 28

8.2

Methods of Programming the MTP Memory....................................... 29

8.2.1

Programming the MTP memory over USB...................................................................... 29

8.3

Memory Map ..................................................................................... 30

9

Package Parameters................................................................... 31

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