FTDI DLP-245PB-G

The DLP-245PB-G provides a cost-effective, microcontroller-based method of interfacing an electronic peripheral to a host computer via USB. To send data from the peripheral to the host computer, the microcontroller simply writes the byte-wide data into the FT245RL when TXE# is low. If the FT245RL’s transmit buffer fills up or is busy storing the previously written byte, it will take its TXE# high in order to stop further data from being written until some of the FIFO data has been transferred over USB to the host. When the host sends data to the peripheral over USB, the FT245RL will take RXF# low to let the microcontroller know that at least one byte of data is available. The microcontroller then reads the data until RXF# goes high indicating that no more data is available to read. By using FTDI’s virtual COM port drivers, the peripheral looks like a standard COM port to the application software. Commands to set the baud rate are ignored--the FT245RL always transfers data at its fastest rate regardless of the application’s baud-rate setting.

• Send/receive data over USB to a host computer at up to 2 megabits per second
• 18 digital I/O lines (6 can be configured as A/D inputs) plus the 8-bit data bus available for interfacing to user electronics
• Microchip 16F877A processor with 8K FLASH ROM, 368 bytes RAM, and a multi-channel, 10-bit A/D converter
• “Token I/O” code preprogrammed into the 16F877A’s ROM for basic port pin input/output capability including access to the A/D, EEPROM, and external digital temperature sensors. ROM can be easily erased and reprogrammed with a user-supplied compatible programmer
• No in-depth knowledge of USB is required as all USB protocol is handled automatically by the on-board FT245RL and its support circuitry
• Royalty-free device drivers eliminate the need for USB driver development in most cases
• USB bulk or isocronous data-transfer modes
• Required 5V supply can be taken directly from the USB port or supplied by user electronics
• USB 1.1 and USB 2.0 compatible
• USB VID, PID, serial number, and product description strings stored in EEPROM memory
• Virtual com port (VCP) drivers for: - Windows 98 and Windows 98 SE - Windows 2000/ME/XP - Windows CE - MAC OS-8 and OS-9 - MAC OS-X - Linux 2.40 and greater
• D2XX (USB direct drivers + DLL S/W interface) - Windows 98 and Windows 98 SE - Windows 2000/ME/XP

• Prototype development
• USB ISDN and ADSL modems
• USB interface for digital cameras
• USB interface for MP3 players
• High-speed USB instrumentation
• USB smart-card readers
• Set top box (STB) PC-USB interface
• USB hardware modems
• USB wireless modems
• USB bar code readers