FT231XS-T datasheet, PDF - EEWORLD Datasheet

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FT231XS-T: DescriptionMicroprocessor Circuit, CMOS, PDSO20, 8.66 X 3.91 MM, 0.635 MM PITCH, ROHS COMPLIANT, MO-137AD, SSOP-20; CategoryThe embedded processor and controller Microcontrollers and processors; File Size825KB，44 Pages; ManufacturerFTDI

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FT231XS-T Overview

Microprocessor Circuit, CMOS, PDSO20, 8.66 X 3.91 MM, 0.635 MM PITCH, ROHS COMPLIANT, MO-137AD, SSOP-20

FT231XS-T Parametric

Parameter Name	Attribute value
Maker	FTDI
Parts packaging code	SSOP
package instruction	SSOP,
Contacts	20
Reach Compliance Code	compliant
JESD-30 code	R-PDSO-G20
length	8.6614 mm
Number of terminals	20
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SSOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, SHRINK PITCH
Maximum seat height	1.7526 mm
Maximum supply voltage	5.5 V
Minimum supply voltage	2.97 V
Nominal supply voltage	5 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal form	GULL WING
Terminal pitch	0.635 mm
Terminal location	DUAL
width	3.9116 mm
uPs/uCs/peripheral integrated circuit type	MICROPROCESSOR CIRCUIT

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FT231X USB TO FULL HANDSHAKE UART IC

Datasheet

Document No.: FT_000565 Clearance No.:

FTDI# 261

Version 1.2

Future Technology

Devices International Ltd

FT231X

(

USB to FULL HANDSHAKE UART IC

)

The FT231X is a USB to serial UART

interface with full modem control and

the following advanced features:



Single chip USB to asynchronous serial data

transfer interface.

Entire USB protocol handled on the chip. No

USB specific firmware programming required.

Fully integrated 2048 byte multi-time-

programmable (MTP) memory, storing device

descriptors and CBUS I/O configuration.

Fully integrated clock generation with no

external crystal required plus optional clock

output selection enabling glue-less interface

to external MCU or FPGA.

Data transfer rates from 300 baud to 3 Mbaud

(RS422, RS485, and RS232 ) at TTL levels.

512 byte receive buffer and 512 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.

Configurable CBUS I/O pins.

Transmit and receive LED drive signals.

UART interface support for 7 or 8 data bits, 1

or 2 stop bits and odd / even / mark / space

no parity

Synchronous and asynchronous bit bang

interface options with RD# and WR# strobes.



USB Battery Charger Detection. Allows for USB

peripheral devices to detect the presence of a

higher power source to enable improved

charging.

Device supplied pre-programmed with unique

USB serial number.

USB Power Configurations; supports bus-

powered, self-powered and bus-powered with

power switching

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

True 3.3V CMOS drive output and TTL input;

Operates down to 1V8 with external pull-ups.

Tolerant of 5V input.

Configurable I/O pin output drive strength; 4

mA(min) and 16 mA(max).

Integrated power-on-reset circuit.

Fully integrated AVCC supply filtering

external filtering required.

UART signal inversion option.

+ 5V Single Supply Operation.

Internal 3V3/1V8 LDO regulators

Low operating and USB suspend current; 8mA

(active-typ) and 125uA (suspend-typ).

UHCI/OHCI/EHCI host controller compatible

USB 2.0 Full Speed capable.

Extended operating temperature range; -40 to

85⁰C.

Available in compact, Pb-free, 20 Pin SSOP and

QFN packages (both RoHS compliant).

- no



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 preliminar y

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

FT231X USB TO FULL HANDSHAKE UART IC

Datasheet

Document No.: FT_000565 Clearance No.:

FTDI# 261

Version 1.2

Table of Contents

1.1

1.2

1.3

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

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

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

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

3.1

FT231X Block Diagram ................................................................. 4

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

20-LD QFN Package ........................................................................... 7

QFN Package PinOut Description .................................................................................... 7

3.1.1

3.2

3.2.1

20-LD SSOP Package.......................................................................... 9

SSOP Package PinOut Description .................................................................................. 9

3.3

CBUS Signal Options ......................................................................... 10

4.1

4.2

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

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

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

5.1

5.2

5.3

5.4

5.5

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

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

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

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

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

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

6.1

6.2

6.3

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

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

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

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

7.1

7.2

7.3

7.4

7.5

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

USB to RS232 Converter ................................................................... 25

USB to RS485 Coverter ..................................................................... 26

USB to RS422 Converter ................................................................... 27

USB Battery Charging Detection ....................................................... 28

LED Interface .................................................................................... 30

8.1

8.2

Internal MTP Memory Configuration ........................................... 32

Default Values .................................................................................. 32

Methods of Programming the MTP Memory ....................................... 34

Programming the MTP memory over USB ...................................................................... 34

8.2.1

8.3

Memory Map ..................................................................................... 34

FT231XS-T Related Products

	FT231XS-T	FT231XQ-U
Description	Microprocessor Circuit, CMOS, PDSO20, 8.66 X 3.91 MM, 0.635 MM PITCH, ROHS COMPLIANT, MO-137AD, SSOP-20	Microprocessor Circuit, CMOS, 4 X 4 MM, 0.50 MM PITCH, ROHS COMPLIANT, MO-220, QFN-20
Maker	FTDI	FTDI
Parts packaging code	SSOP	QFN
package instruction	SSOP,	HVQCCN,
Contacts	20	20
Reach Compliance Code	compliant	compliant
JESD-30 code	R-PDSO-G20	S-XQCC-N20
length	8.6614 mm	4 mm
Number of terminals	20	20
Maximum operating temperature	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C
Package body material	PLASTIC/EPOXY	UNSPECIFIED
encapsulated code	SSOP	HVQCCN
Package shape	RECTANGULAR	SQUARE
Package form	SMALL OUTLINE, SHRINK PITCH	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Maximum seat height	1.7526 mm	0.8 mm
Maximum supply voltage	5.5 V	5.5 V
Minimum supply voltage	2.97 V	2.97 V
Nominal supply voltage	5 V	5 V
surface mount	YES	YES
technology	CMOS	CMOS
Temperature level	INDUSTRIAL	INDUSTRIAL
Terminal form	GULL WING	NO LEAD
Terminal pitch	0.635 mm	0.5 mm
Terminal location	DUAL	QUAD
width	3.9116 mm	4 mm
uPs/uCs/peripheral integrated circuit type	MICROPROCESSOR CIRCUIT	MICROPROCESSOR CIRCUIT

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