FTDI UM232R

The UM232R is a development module which uses FTDI’s FT232RL, one of FTDI’s range of USB to UART interface integrated circuit devices. The FT232RL is a USB to serial UART interface with optional clock generator output, and the FTDIChip-ID security dongle feature. In addition, asynchronous and synchronous bit bang interface modes are available. The FT232RL adds two new functions compared with its predecessors, effectively making it a “3-in-1” chip for some application areas. The internally generated clock (6MHz, 12MHz, 24MHz, and 48MHz) can be brought out of the device and used to drive a microcontroller or external logic. A unique number (the FTDIChip-ID) is burnt into the device during manufacture and is readable over USB, thus forming the basis of a security dongle which can be used to protect customer application software from being copied. (Safe-Guard-IT). The UM232R is supplied on a PCB which is designed to plug into a standard 0.6” wide 24 pin DIP socket. All components used, including the FT232RL are Pb-free (RoHS compliant).

• Single chip USB to UART synchronous serial data transfer interface
• Entire USB protocol handled on the chip
• No USB-specific firmware programming required
• UART interface support for 7 or 8 data bits, 1 or 2 stop bits and odd / even / mark / space / no parity
• Fully assisted hardware or X-On / X-Off software handshaking
• Data transfer rates from 300 baud to 3 Megabaud (RS422 / RS485 and at TTL levels) and 300 baud to 1 Megabaud (RS232)
• FTDI’s royalty-free VCP and D2XX drivers eliminate the requirement for USB driver development in most cases
• In-built support for event characters and line break condition
• USB FTDIChip-ID feature
• Configurable CBUS I/O pins
• Auto transmit buffer control for RS485 applications
• Transmit and receive LED drive signals
• New 48MHz, 24MHz, 12MHz, and 6MHz clock output signal Options for driving external MCU or FPGA
• Receive and transmit buffers for high data throughput
• Adjustable receive buffer timeout
• Synchronous and asynchronous bit bang mode interface options with RD# and WR# strobes
• New CBUS bit bang mode option
• Support for USB suspend and resume
• Integrated 1024 bit internal EEPROM for storing USB VID, PID, serial number and product description strings, and CBUS I/O configuration
• Device supplied preprogrammed with unique USB serial number
• Support for bus powered, self-powered, and high-power bus powered USB
• On board jumper allows for selection of USB bus powered supply or self-powered supply
• Integrated 3.3V level converter for USB I/O
• Integrated level converter on UART and CBUS for interfacing to 5V – 1.8V Logic
• On board jumper allows for selection of UART and CBUS interface IO voltage
• True 5V / 3.3V / 2.8V / 1.8V CMOS drive output and TTL input
• High I/O pin output drive option
• Integrated USB resistors
• Integrated power-on-reset circuit
• Fully integrated clock – no external crystal

• USB to RS232 / RS422 / RS485 Converters
• Upgrading Legacy Peripherals to USB
• Cellular and Cordless Phone USB data transfer cables and interfaces
• Interfacing MCU / PLD / FPGA based designs to USB
• USB Audio and Low Bandwidth Video data transfer
• PDA to USB data transfer
• USB Smart Card Readers
• USB Instrumentation
• USB Industrial Control
• USB MP3 Player Interface
• USB FLASH Card Reader / Writers
• Set Top Box PC – USB interface
• USB Digital Camera Interface
• USB Hardware Modems
• USB Wireless Modems
• USB Bar Code Readers
• USB Software / Hardware Encryption Dongles
• USB Medical applications