The FT232R is a USB to serial UART interface with 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 1024 bit EEPROM storing device descriptors and CBUS I/O configuration.  Fully integrated USB termination resistors.  Fully integrated clock generation with no external crystal required plus optional clock output selection enabling a glue-less interface to external MCU or FPGA.  Data transfer rates from 300 baud to 3 Mbaud (RS422, RS485, RS232) at TTL levels.  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 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  FIFO receives and transmits buffers for high data throughput.  Synchronous and asynchronous bit bang interface options with RD# and WR# strobes.  Device supplied pre-programmed with unique USB serial number.  Supports bus powered, self-powered and highpower bus powered USB configurations.  Integrated +3.3V level converter for USB I/O.  Integrated level converter on UART and CBUS for interfacing to between +1.8V and +5V logic.  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.  UART signal inversion option.  +3.3V (using external oscillator) to +5.25V (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).