FT245R datasheet, PDF - EEWORLD Datasheet

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FT245R: DescriptionUSB FIFO IC - Single chip USB to parallel FIFO bidirectional data transfer interface; File Size599KB，37 Pages; ManufacturerFTDI [Future Technology Devices International Ltd.]

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USB FIFO IC - Single chip USB to parallel FIFO bidirectional data transfer interface

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Document No.: FT_000052

FT245R USB FIFO IC Datasheet Version 2.10

Clearance No.: FTDI# 39

Future Technology

Devices International Ltd

FT245R USB FIFO IC

The FT245R is a USB to parallel FIFO

interface with the following advanced

features:

Single chip USB to parallel FIFO bidirectional

data transfer interface.

Entire USB protocol handled on the chip. No

USB specific firmware programming required.

Fully integrated 1024 bit EEPROM storing

device descriptors and FIFO I/O configuration.

Fully integrated USB termination resistors.

Fully integrated clock generation with no

external crystal required.

Data transfer rates up to 1Mbyte / second.

128 byte receive buffer and 256 byte transmit

buffer utilising buffer smoothing technology to

allow for high data throughput.

FTDI‟s royalty-free Virtual Com Port (VCP) and

Direct (D2XX) drivers eliminate the

requirement for USB driver development in

most cases.

Unique USB FTDIChip-ID™ feature.

Configurable FIFO interface I/O pins.

Synchronous and asynchronous bit bang

interface options.

Device supplied pre-programmed with unique USB

serial number.

Supports bus powered, self powered and high-power

bus powered USB configurations.

Integrated +3.3V level converter for USB I/O.

Integrated level converter on FIFO interface for

interfacing to external logic running at between

+1.8V and +5V.

True 5V/3.3V/2.8V/1.8V CMOS drive output and TTL

input.

Configurable I/O pin output drive strength.

Integrated power-on-reset circuit.

Fully integrated AVCC supply filtering - no external

filtering required.

+3.3V (using external oscillator) to +5.25V (using

internal oscillator) Single Supply Operation.

Low operating and USB suspend current.

Low USB bandwidth consumption.

UHCI/OHCI/EHCI host controller compatible.

USB 2.0 Full Speed compatible.

-40°C to 85°C extended operating temperature

range.

Available in compact Pb-free 28 Pin SSOP and QFN-

32 packages (both RoHS compliant).

Neither the whole nor any part of the information contained in, or the product described in this manual, may be adapted or reproduced

in any material or electronic form without the prior written consent of the copyright holder. This product and its documentation are

supplied on an as-is basis and no warranty as to their suitability for any particular purpose is either made or implied. Future Technology

Devices International Ltd will not accept any claim for damages howsoever arising as a result of use or failure of this product. Your

statutory rights are not affected. This product or any variant of it is not intended for use in any medical appliance, device or system in

which the failure of the product might reasonably be expected to result in personal injury. This document provides preliminary

information that may be subject to change without notice. No freedom to use patents or other intellectual property rights is implied by

the publication of this document. Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park,

Glasgow G41 1HH United Kingdom. Scotland Registered Company Number: SC136640

Document No.: FT_000052

FT245R USB FIFO IC Datasheet Version 2.10

Clearance No.: FTDI# 39

Table of Contents

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

1.1

1.2

1.3

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

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

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

FT245R Block Diagram .................................................................... 4

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

3.1

3.2

3.3

3.4

3.5

3.6

28-LD SSOP Package .......................................................................... 7

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

QFN-32 Package ............................................................................... 10

QFN-32 Package Signal Description .................................................. 10

FT245R FIFO READ Timing Diagrams ................................................ 13

FT245R FIFO WRITE Timing Diagrams .............................................. 14

Key Features ..................................................................................... 15

Functional Block Descriptions ........................................................... 16

Absolute Maximum Ratings............................................................... 17

DC Characteristics............................................................................. 18

EEPROM Reliability Characteristics ................................................... 21

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

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

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

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

USB Bus Powered with Selectable External Logic Supply .................. 25

USB to MCU FIFO Interface ............................................................... 26

Using the External Oscillator ............................................................ 27

Function Description ..................................................................... 15

4.1

4.2

Devices Characteristics and Ratings.............................................. 17

5.1

5.2

6.1

6.2

6 ........................................................................................................ 20

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

7.1

7.2

7.3

7.4

Application Examples .................................................................... 26

8.1

8.2

Internal EEPROM Configuration .................................................... 28

Package Parameters ................................................................... 29

SSOP-28 Package Dimensions ........................................................ 29

QFN-32 Package Dimensions ......................................................... 30

QFN-32 Package Typical Pad Layout .............................................. 31

QFN-32 Package Typical Solder Paste Diagram .............................. 31

10.1

10.2

10.3

10.4

FT245R Related Products

	FT245R	FT245R_10
Description	USB FIFO IC - Single chip USB to parallel FIFO bidirectional data transfer interface	USB FIFO IC - Single chip USB to parallel FIFO bidirectional data transfer interface

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