DLP-245PL-G DLP Design

DLP-245PL-G USB / Microcontroller Module (Lead-Free) The DLP-245PL-G combines the same lead-free USB interface used in the DLP-USB245M-G module with a Microchip PIC microcontroller to form a rapid development tool. The 18LF8722 microcontroller is preprogrammed with basic functionality for accessing the port pins and can be reprogrammed with user hex code via a 5-pin header that is compatible with Microchips MPLAB ICD2 device programmer/debugger (purchased separately). DLP-245PL FEATURES Send/receive data over USB to a host computer at up to 2 megabits per second 50 digital I/O lines (16 can be configured as A/D inputs) plus the 8-bit data bus available for interfacing to user electronics Microchip 18LF8722 processor with 128K FLASH Program ROM, 3840 bytes RAM, 1024 bytes of data EEPROM and a multi-channel, 10-bit A/D converter Token I/O code preprogrammed into the 18LF8722s FLASH for basic port pin input/output capability including access to the A/D, EEPROM, and external digital temperature sensors. ROM can be erased and reprogrammed with a device programmer (purchased separately). 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 1 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 on-chip EEPROM 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 APPLICATION AREAS 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 GENERAL DESCRIPTION The DLP-245PL-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 FT245RLs 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. 2