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Sharif University of Technology. 5. LUT-Based Logic Cells. 0 LUT is a memory which contains the truth-table of a function. 0 LUT with n inputs can implement any n-bit function. 0 Truth-table is placed in LUT during the FPGA programming. 0 LUTs are implemented with SRAM
FPGAs - 5. Programming Technologies. ? Fuse and anti-fuse. ? fuse makes or breaks link between two wires. ? typical connections are 50-300 ohm. ? one-time programmable (testing before programming?) ? EPROM and EEPROM. ? high power consumption. ? typical connections are 2K-4K ohm. ? fairly low density.
interconnect network. Programmability in FPGAs is achieved through an underlying programming technology. This chapter first briefly discusses different programming technologies. Details of basic FPGA logic blocks and different routing architectures are then described. After that, an overview of the different steps involved
10 Jan 2009 Neeraj Goel/IIT Delhi. Plan. ?FPGA architecture. ? Basics of FPGA. ?FPGA technologies. ? Architectures of different commercial FPGAs. ?FPGA tools. ? FPGA implementation flow and Programming converts selected locations as conducting power consuming. ? E2RAM takes more time for programming.
Programming technologies may be permanent or non-permanent. • For commerical FPGAs, the main switch technologies are antifuses (e.g. Actel) and. Static RAM cells (e.g. Xilinx). • For commerical CPLDs (e.g. Altera MAX), the main switch technologies are Erasable. Programmable ROM (EPROM) transistors and
2 Jun 2003 that are configured using a programming tech. ? Chip inputs and outputs use special I/O logic cells. ? A programmable interconnect scheme forms the wiring between the two types of logic cells. ? Designers use custom software, tailored for each programming technology and FPGA architecture to.
?The Programming technology. ?The basic logic cells. ?The I/O logic cells. ?Programmable interconnect. ?Software to design and program the FPGA. ? Currently the four main players in this field are:- ?Actel. ?Altera. ?Xilinx. ?Atmel. Imperial College, 2005. Digital System Design. 3.3. PLD Technologies: Antifuse.
(FPGAs) • programming technology • basic logic cells • I/O logic cells • programmable inter- connect • software to design and program the FPGA. Actel antifuse antifuse • programming current (about 5mA) • (PLICE') • oxide–nitride–oxide (ONO) dielec- tric • Activator • in-system programming (ISP) • gang programmers
FPGAs are available from various companies among which the major ones are Crosspoint. Altera, Actel and Xilinx (Fig. 7). They differ from one company to another in the way they are implemented, from using the simplest Logic Blocks and Programming Technologies for the Crosspoint ones to using the most sophisticated
??? 664. ???????? ?????????? ?? FPGAs. ????????? ??????? 2010. ??????? 5: FPGA Programming Technologies. ????? ??????????. (ttheocharides@ucy.ac.cy)
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