A unique number (the FTDIChip-IDTM) 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. The FT245R adds a new function compared with its predecessors, effectively making a "2-in-1" chip for some application areas. USB to parallel designs using the FT245R have been further simplified by fully integrating the external EEPROM, clock circuit and USB resistors onto the device. In addition, asynchronous and synchronous bit bang interface modes are available. The is a USB to parallel FIFO interface, with the new FTDIChip-IDTM security dongle feature. The is a development module which uses FTDI's FT245RL, the latest device to be added to FTDI's range of USB UART interface Integrated Circuit Devices.
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