The FT245RQ is an USB to parallel FIFO Interface IC, simplifies USB to FIFO designs and reduces external component count by fully integrating an external EEPROM, USB termination resistors and an integrated clock circuit which requires no external crystal, into the device. It has been designed to operate efficiently with a USB host controller by using as little as possible of the total USB bandwidth available. The USB to parallel FIFO interface integrated circuit with the new FTDIChip-ID™ security dongle feature. In addition, asynchronous and synchronous bit bang interface modes are available. USB to parallel designs using the IC have been further simplified by fully integrating the external EEPROM, clock circuit and USB resistors onto the device. The IC adds a new function compared with its predecessors, effectively making it a 2-in-1 chip for some application areas. A unique number is burnt into the device during manufacture and is readable over USB.
● Single chip USB to parallel FIFO bidirectional data transfer interface
● Entire USB protocol handled on chip, no USB-specific firmware programming required
● Simple interface to MCU/PLD/FPGA logic with simple 4-wire handshake interface
● Data transfer rate to 1Mbps D2XX direct drivers
● Data transfer rate to 300kbps VCP drivers
● FTDI"s royalty-free virtual com port (VCP) and direct (D2XX) drivers
● New USB FTDIChip-ID™
● FIFO receive and transmit buffers for high data throughput
● 256-byte receive buffer and 128-byte transmit buffer utilising buffer smoothing technology
● Adjustable receive buffer timeout
● Synchronous and asynchronous bit bang mode interface options with RD# and WR# strobes
● Integrated 1024-bit internal EEPROM for storing USB VID, PID, serial number/product desc. strings
● Device supplied pre-programmed with unique USB serial number
● Support for USB suspend/resume through PWREN# pin and wake up pin function
● In-built support for event characters
● Support for bus powered, self powered and high-power bus powered USB configurations
● Integrated 3.3V level converter for USB I/O
● Integrated level converter on FIFO interface and control pins for interfacing to 5 to 1.8V logic
● True 5/3.3/2.8/1.8V CMOS drive output and TTL input
● High I/O pin output drive option
