The FT201X is a USB to I2C interface with the following advanced features:
 Single chip USB to I2C slave interface.
 Up to 3.4MHz, high speed mode, I2C supported
 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 a glue-less interface to external MCU or FPGA.
 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.
 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 - no external filtering required.
 + 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 compatible.
 Extended operating temperature range; -40 to 85⁰C.
 Available in compact Pb-free 16 Pin SSOP and QFN packages (both RoHS compliant).

Typical Applications
 Upgrading Legacy Peripherals to USB
 Utilising USB to add system modularity
 Incorporate USB interface to enable PC transfers for development system communication
 Motherboard and system monitoring through USB
 USB dongle implementations for Software/ Hardware Encryption and Wireless Modules
 Interfacing MCU/PLD/FPGA based designs to add USB connectivity
 USB Instrumentation
 USB Industrial Control
 USB Digital Camera Interface
 Ability to detect dedicated charging ports for high current charging of batteries in portable devices