FT231XS-R

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-timeprogrammable (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 buspowered, 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 85°C. Available in compact, Pb-free, 20 Pin SSOP and QFN packages (both RoHS compliant).

Applications

• USB to RS232/RS422/RS485 Converters
• Upgrading Legacy Peripherals to USB
• Utilising USB to add system modularity
• Incorporate USB interface to enable PC transfers for development system communication
• Cellular and Cordless Phone USB data transfer cables and interfaces
• Interfacing MCU/PLD/FPGA based designs to add USB connectivity
• USB Audio and Low Bandwidth Video data transfer
• USB Smart Card Readers
• USB Instrumentation
• USB Industrial Control
• USB MP3 Player Interface
• USB FLASH Card Reader and Writers
• Set Top Box PC - USB interface
• USB Digital Camera Interface
• USB Hardware Modems
• USB Wireless Modems
• USB Bar Code Readers
• USB dongle implementations for Software/ Hardware Encryption and Wireless Modules
• Detection of dedicated battery charger ports for high current charging of batteries in portable devices

Key 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-timeprogrammable (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 buspowered, 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 85°C
• Available in compact, Pb-free, 20 Pin SSOP and QFN packages (both RoHS compliant)