FT231XS-R FTDI, FT231XS-R Datasheet

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FT231XS-R

Manufacturer Part Number
FT231XS-R
Description
USB Interface IC USB to Full Serial UART IC SSOP-20
Manufacturer
FTDI
Datasheet

Specifications of FT231XS-R

Rohs
yes
Product
USB 2.0
Data Rate
12 Mbps, 480 Mbps
Interface Type
UART, USB
Operating Supply Voltage
2.97 V to 5.5 V
Operating Supply Current
8 mA to 8.4 mA
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SSOP-20
Tradename
X-Chip

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Devices International Ltd
(
USB to FULL HANDSHAKE UART IC
The FT231X is a USB to serial UART
interface with full modem control and
the following advanced features:
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
Future Technology
Single chip USB to asynchronous serial data
transfer interface.
Entire USB protocol handled on the chip. No
USB specific firmware programming required.
Fully
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
interface options with RD# and WR# strobes.
integrated
FT231X
and
Copyright © 2013 Future Technology Devices International Limited
2048
asynchronous
byte
multi-time-
bit
FT231X USB TO FULL HANDSHAKE UART IC
bang
)
Document No.: FT_000565 Clearance No.:
USB Battery Charger Detection. Allows for USB
peripheral devices to detect the presence of a
higher
charging.
Device supplied pre-programmed with unique
USB serial number.
USB
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 - no
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).
.
Power
power
Configurations;
source
to
enable
Datasheet
supports
Version 1.2
FTDI# 261
improved
bus-
1

Related parts for FT231XS-R

FT231XS-R Summary of contents

Page 1

... FTDI’s royalty-free Virtual Com Port (VCP) and Direct (D2XX) drivers eliminate the requirement for USB driver development in most cases.  ...

Page 2

... For driver installation, please refer to 1.2 Part Numbers Part Number FT231XQ-x FT231XS-x Note: Packing codes for x is Taped and Reel, (SSOP is 2,000pcs per reel, QFN is 5,000pcs per reel Tube packing, 58pcs per tube (SSOP only Tray packing, 490pcs per tray (QFN only) For example: FT231XQ-R is 5,000pcs taped and reel packing Copyright © ...

Page 3

... USB Compliant The FT231X is fully compliant with the USB 2.0 specification and has been given the USB-IF Test-ID (TID) 40001464 (Rev D). Copyright © 2013 Future Technology Devices International Limited FT231X USB TO FULL HANDSHAKE UART IC Document No.: FT_000565 Clearance No.: Datasheet Version 1.2 FTDI# 261 3 ...

Page 4

... FIFO RX Buffer (512 bytes) USB Engine Protocol Engine (SIE) Internal MTP Memory FIFO TX Buffer (512 bytes) 48MHz To USB Transceiver Cell Datasheet Version 1.2 FTDI# 261 48MHz Baud Rate Generator TXD RXD RTS# CTS# DTR# DSR# UART Controller DCD# UART FIFO with RI# ...

Page 5

... LED Interface .................................................................................... 30 8 Internal MTP Memory Configuration ........................................... 32 8.1 Default Values .................................................................................. 32 8.2 Methods of Programming the MTP Memory ....................................... 34 8.2.1 Programming the MTP memory over USB ...................................................................... 34 8.3 Memory Map ..................................................................................... 34 Copyright © 2013 Future Technology Devices International Limited FT231X USB TO FULL HANDSHAKE UART IC Document No.: FT_000565 Clearance No.: Datasheet Version 1.2 FTDI# 261 5 ...

Page 6

... QFN-20 Package Markings ................................................................ 39 9.5 Solder Reflow Profile ........................................................................ 40 10 Contact Information ................................................................... 41 Appendix A – References ........................................................................... 42 Appendix B – List of Figures and Tables .................................................... 42 Appendix C – Revision History ................................................................... 44 Copyright © 2013 Future Technology Devices International Limited FT231X USB TO FULL HANDSHAKE UART IC Document No.: FT_000565 Clearance No.: Datasheet Version 1.2 FTDI# 261 6 ...

Page 7

... V or 3V3 supply to IC Input POWER 1V8 – 3V3 supply for the IO cells Input 3V3 output at 50mA. May be used to power VCCIO. POWER When VCC is 3V3; pin input pin and should be Output connected to pin 12. POWER 0V Ground input. Input Datasheet Version 1.2 FTDI# 261 Description 7 ...

Page 8

... Configurable CBUS I/O Pin. Function of this pin is configured in the device MTP memory. The default configuration is TXLED#. See CBUS Signal Options, Table 3.7. Configurable CBUS I/O Pin. Function of this pin is configured in the device MTP memory. The default configuration is SLEEP#. See CBUS Signal Options, Table 3.7. Datasheet Version 1.2 FTDI# 261 Description 8 ...

Page 9

... May be used to power VCCIO. POWER When VCC is 3V3, pin input pin. Output POWER 0V Ground input. Input Type INPUT USB Data Signal Minus. INPUT USB Data Signal Plus. INPUT Reset input (active low). Datasheet Version 1.2 FTDI# 261 Description Description 9 ...

Page 10

... Configurable CBUS I/O Pin. Function of this pin is configured in the device MTP memory. The default configuration is TXLED#. See CBUS Signal Options, Table 3.7. Configurable CBUS I/O Pin. Function of this pin is configured in the device MTP memory. The default configuration is SLEEP#. See CBUS Signal Options, Table 3.7. Datasheet Version 1.2 FTDI# 261 10 ...

Page 11

... The following options can be configured on the CBUS I/O pins. CBUS signal options are common to both package versions of the FT231X. These options can be configured in the internal MTP memory using the software utility FT_PPROG, which can be downloaded from the FTDI Utilities (www.ftdichip.com). The default configuration is described in Section 8. ...

Page 12

... USB suspend mode the outputs clocks are also suspended. Copyright © 2013 Future Technology Devices International Limited FT231X USB TO FULL HANDSHAKE UART IC Document No.: FT_000565 Clearance No.: Description Toggle signal which changes state each time a USB SOF is received Prevents the device from entering suspend state when unplugged. Datasheet Version 1.2 FTDI# 261 12 ...

Page 13

... In the FT231X device this mode has been enhanced by outputting the internal RD# and WR# strobes signals which can be used to allow external logic to be clocked by accesses to the bit-bang I/O bus. This option will be described more fully in a separate application note available from FTDI website (www.ftdichip.com). ...

Page 14

... This gives achievable baud rates in the range 183.1 baud to 3,000,000 baud. When a non-standard baud rate is required simply pass the required baud rate value to the driver as normal, and the FTDI driver will calculate the required divisor, and set the baud rate. See FTDI application note AN232B-05 on the FTDI website (www.ftdichip.com) for more details. Copyright © ...

Page 15

... RESET Generator – The integrated Reset Generator Cell provides a reliable power-on reset to the device internal circuitry at power up. The RESET# input pin allows an external device to reset the FT231X. RESET# can be tied to 3V3OUT. Copyright © 2013 Future Technology Devices International Limited FT231X USB TO FULL HANDSHAKE UART IC Document No.: FT_000565 Clearance No.: Datasheet Version 1.2 FTDI# 261 15 ...

Page 16

... Parameter Storage Temperature Floor Life (Out of Bag) At Factory Ambient (30°C / 60% Relative Humidity) Ambient Operating Temperature (Power Applied) MTTF FT231XS MTTF FT231XQ VCC Supply Voltage VCCIO IO Voltage DC Input Voltage – USBDP and USBDM DC Input Voltage – High Impedance Bi-directionals (powered from VCCIO) DC Output Current – ...

Page 17

... Copyright © 2013 Future Technology Devices International Limited FT231X USB TO FULL HANDSHAKE UART IC Document No.: FT_000565 Clearance No.: Minimum Typical Maximum 2.97 5 5.5 1.62 --- 3. 8.4 125 2.97 3.3 3.63 Datasheet Version 1.2 FTDI# 261 Units Conditions V Normal Operation V mA Normal Operation μA USB Suspend VCC must be greater than 3V3 otherwise 3V3OUT input which must be driven with 3.3V 17 ...

Page 18

... Datasheet Version 1.2 FTDI# 261 Units Conditions Ioh = +/-2mA V I/O Drive strength* = 4mA I/O Drive strength 8mA I/O Drive strength 12mA I/O Drive strength 16mA Iol = +/-2mA V I/O Drive strength* = 4mA I/O Drive strength 8mA I/O Drive strength 12mA I/O Drive strength* ...

Page 19

... Datasheet Version 1.2 FTDI# 261 Units Conditions Ioh = +/-2mA V I/O Drive strength* = 4mA I/O Drive strength 8mA I/O Drive strength 12mA I/O Drive strength 16mA Iol = +/-2mA V I/O Drive strength* = 4mA I/O Drive strength 8mA I/O Drive strength 12mA I/O Drive strength* ...

Page 20

... Datasheet Version 1.2 FTDI# 261 Units Conditions Ioh = +/-2mA V I/O Drive strength* = 4mA I/O Drive strength 8mA I/O Drive strength 12mA I/O Drive strength 16mA Iol = +/-2mA V I/O Drive strength* = 4mA I/O Drive strength 8mA I/O Drive strength 12mA ...

Page 21

... Note 1: Equivalent to +/-1667ppm Copyright © 2013 Future Technology Devices International Limited FT231X USB TO FULL HANDSHAKE UART IC Document No.: FT_000565 Clearance No.: Minimum Typical Maximum VCC-0 2.0 Unit Years Cycles Cycles Value Typical 11.98 12.00 83.19 83. Datasheet Version 1.2 FTDI# 261 Units Conditions V 0 Unit Maximum 12.02 MHz 83. ...

Page 22

... USB Power Configurations The following sections illustrate possible USB power configurations for the FT231X. The illustrations have omitted pin numbers for ease of understanding since the pins differ between the FT231XS and FT231XQ package options. All USB power configurations illustrated apply to both package options for the FT231X device. Please refer to Section 9 for the package option pin-out and signal descriptions ...

Page 23

... Copyright © 2013 Future Technology Devices International Limited FT231X USB TO FULL HANDSHAKE UART IC Document No.: FT_000565 Clearance No.: VCC(3.3-5.25V) 47pF 47pF 4k7 10k GND GND 4.7uF GND GND Datasheet Version 1.2 FTDI# 261 VCC 27R USBDM 27R USBDP FT231X VBUS_SENSE VCCIO RESET# 3V3OUT 100nF 23 ...

Page 24

... FT231X USB TO FULL HANDSHAKE UART IC Document No.: FT_000565 Clearance No.: P Channel Power MOSFET 0.1uF 0.1uF 10k 1k VCC 27R USBDM 27R USBDP 47pF FT231X RESET# VCCIO GND 3V3OUT VCC 100nF + 4.7uF GND GND Datasheet Version 1.2 FTDI# 261 Switched 5V Power to External Logic PWREN# CBUS3 24 ...

Page 25

... Application Examples The following sections illustrate possible applications of the FT231X. The illustrations have omitted pin numbers for ease of understanding since the pins differ between the FT231XS and FT231XQ package options. 7.1 USB to RS232 Converter Ferrite Bead 47pF 5 SHIELD 10nF GND ...

Page 26

... FT231X USB TO FULL HANDSHAKE UART IC Document No.: FT_000565 Clearance No.: VCC VCC 27R USBDM TXD 27R USBDP 47pF FT231X RXD RESET# VCCIO TXDEN 3V3OUT PWREN# 100nF GND Datasheet Version 1.2 FTDI# 261 Vcc RS 485 LEVEL CONVERTER GND DB9M SHIELD 10 ZT3485E 120R 5 Link VCCIO 10K 26 ...

Page 27

... RXD VCC TXD 27R RTS# USBDM CTS# 27R USBDP 47pF FT231X RESET# SLEEP# VCCIO PWREN# 3V3OUT 100nF GND Vcc 10K Datasheet Version 1.2 FTDI# 261 Vcc RS 422 LEVEL CONVERTER 4 10 TXDM 5 9 TXDP RXDP 120R 12 RXDM ZT3491 6 7 Vcc RS 422 LEVEL ...

Page 28

... GND GND GND GND 1A when connected to a dedicated charger port 0A when enumerated 0A when not enumerated and not in sleep 0A when in sleep VBUS X NTC JP1 4K32 1% NCT Available 1-2 NCT Enabled 2-3 NCT Disabled (Default) JP1 JUMPER-2mm SIP-3 GND Datasheet Version 1.2 FTDI# 261 ) is 28 ...

Page 29

... VBUS X NTC JP1 4K32 1% X 1-2 X 2-3 JP1 JUMPER-2mm SIP-3 GND Datasheet Version 1.2 FTDI# 261 0.1uF VBATT 1 + NCT - TB3.5mm 1uF 1R GND GND NCT Available NCT Enabled NCT Disabled (Default) 29 ...

Page 30

... VBUS X NTC JP1 4K32 1% 1-2 X 2-3 JP1 JUMPER-2mm SIP-3 GND Datasheet Version 1.2 FTDI# 261 3V3OUT 0.1uF GND VBATT 1 + NCT - TB3.5mm 1uF 1R GND GND NCT Available NCT Enabled NCT Disabled (Default) 30 ...

Page 31

... FT231X will drive only a single LED. Copyright © 2013 Future Technology Devices International Limited FT231X USB TO FULL HANDSHAKE UART IC Document No.: FT_000565 Clearance No.: VCCIO TX 270R FT231X TXLED# CBUS [0...3] RXLED # CBUS[0...3] VCCIO LED 270R FT231X TX& RXLED # CBUS [0...3] Datasheet Version 1.2 FTDI# 261 RX 270R 31 ...

Page 32

... Further details of this are provided from section 0 onwards. Users who do not have their own USB Vendor ID but who would like to use a unique Product ID in their design can apply to FTDI for a free block of unique PIDs. See TN_100 – USB Vendor ID/Product ID Guidelines for more details. ...

Page 33

... Signal on this pin becomes CTS if enable. Disabled Signal on this pin becomes DTR if enable. Disabled Signal on this pin becomes DSR if enable. Disabled Signal on this pin becomes DCD if enable. Disabled Signal on this pin becomes RI if enable. Datasheet Version 1.2 FTDI# 261 Notes Options are slow or fast enable for RS485 33 ...

Page 34

... FT_Prog utility is used to set the required options and program the device. The FT_Prog utility is provided free-of-charge from the FTDI website, and can be found at the link below. The user guide is also available at this link. http://www.ftdichip.com/Support/Utilities.htm#FT_Prog Additionally, D2XX commands can be used to program the MTP memory from within user applications ...

Page 35

... Configuration Memory Area (non-writable) This is a reserved area and the application should not write to this area of memory. Any attempt to write these locations will fail. Copyright © 2013 Future Technology Devices International Limited FT231X USB TO FULL HANDSHAKE UART IC Document No.: FT_000565 Clearance No.: Datasheet Version 1.2 FTDI# 261 35 ...

Page 36

... SSOP-20 Package Mechanical Dimensions Figure 9.1 SSOP-20 Package Dimensions The FT231XS is supplied in a RoHS compliant 20 pin SSOP package. The package is lead (Pb) free and uses a ‘green’ compound. The package is fully compliant with European Union directive 2002/95/EC. This package is nominally 8.66mm x 3.91mm body (8.66mm x 5.99mm including pins). The pins are on a ...

Page 37

... SSOP-20 Package Markings 20 FT231XS 1 Figure 9.2 SSOP-20 Package Markings The date code format is YYXX where digit week number digit year number. This is followed by the revision number. The code XXXXXXXXXXXX is the manufacturing LOT code. Copyright © 2013 Future Technology Devices International Limited FT231X USB TO FULL HANDSHAKE UART IC Document No ...

Page 38

... This package is nominally 4.00mm x 4.00mm. The solder pads are on a 0.50mm pitch. The above mechanical drawing shows the QFN-20 package. All dimensions are in millimetres. The centre pad on the base of the FT231XQ is internally connected to ground. Copyright © 2013 Future Technology Devices International Limited FT231X USB TO FULL HANDSHAKE UART IC Document No.: FT_000565 Clearance No.: Datasheet Version 1.2 FTDI# 261 38 ...

Page 39

... The date code format is YYXX where digit week number digit year number. This is followed by the revision number. The code XXXXXXX is the manufacturing LOT code. Copyright © 2013 Future Technology Devices International Limited FT231X USB TO FULL HANDSHAKE UART IC Document No.: FT_000565 Clearance No Datasheet Version 1.2 FTDI# 261 39 ...

Page 40

... Max. 8 minutes Max. p Datasheet Version 1.2 FTDI# 261 Critical Zone: when the range Ramp Down Non-Pb Free Solder Process 3°C / Second Max. 100°C 150° 120 seconds 183° ...

Page 41

... FTDI disclaims all liability for system designs and for any applications assistance provided by FTDI. Use of FTDI devices in life support and/or safety applications is entirely at the user’s risk, and the user agrees to defend, indemnify and hold harmless FTDI from any and all damages, claims, suits or expense resulting from such use ...

Page 42

... Appendix B – List of Figures and Tables Copyright © 2013 Future Technology Devices International Limited FT231X USB TO FULL HANDSHAKE UART IC Document No.: FT_000565 Clearance No.: Datasheet Version 1.2 FTDI# 261 42 ...

Page 43

... Table 5.7 USB I/O Pin (USBDP, USBDM) Characteristics .................................................................. 21 Table 5.8 MTP Memory Characteristics ........................................................................................... 21 Table 5.9 Internal Clock Characteristics ......................................................................................... 21 Table 8.1 Default Internal MTP Memory Configuration ..................................................................... 33 Table 9.1 Reflow Profile Parameter Values ..................................................................................... 40 Copyright © 2013 Future Technology Devices International Limited FT231X USB TO FULL HANDSHAKE UART IC Document No.: FT_000565 Clearance No.: Datasheet Version 1.2 FTDI# 261 43 ...

Page 44

... Updated TID Copyright © 2013 Future Technology Devices International Limited FT231X USB TO FULL HANDSHAKE UART IC Document No.: FT_000565 Clearance No.: USB to FULL HANDSHAKE UART IC FT231X FT_000565 FTDI# 261 http://www.ftdichip.com/FT-X.htm Send Feedback VCP disabled in Datasheet Version 1.2 FTDI# 261 ...

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