EP3SL340F1517I4L
EP3SL340F1517I4L - 337500-Cell Stratix III L FPGA | Intel
The Intel EP3SL340F1517I4L is a high-density Stratix III L Field Programmable Gate Array (FPGA) delivering 337,500 logic elements, 18,822,144 bits of embedded memory, and 976 user I/Os, packaged in a 1517-ball FineLine BGA with a 40 mm x 40 mm body. It operates at up to 717 MHz core frequency and is fabricated on a TSMC 65 nm CMOS process, targeting high-end ASIC prototyping, high-throughput signal processing, and telecommunication infrastructure. The device ships in the -I4L industrial speed grade and is part of Intel's long-running Stratix III FPGA family, originally launched by Altera in 2006.
An FPGA (Field Programmable Gate Array) is a programmable semiconductor device that allows hardware designers to implement custom digital logic circuits after manufacturing. FPGAs combine configurable logic blocks (CLBs), programmable interconnects, dedicated DSP slices, embedded memory (BRAM/M9K/M144K), high-speed transceivers, and clock management circuitry on a single die. Within the broader semiconductor taxonomy, FPGAs sit between general-purpose microcontrollers and fixed-function ASICs: more flexible than ASICs, far more parallel than CPUs, and far faster than software-only solutions for parallel DSP and packet-processing workloads.
Key features of the EP3SL340F1517I4L include 13,500 LABs (Logic Array Blocks), 576 embedded 18x18 multipliers (DSP blocks), 4 PLLs, and support for external memory interfaces including DDR3, DDR2, QDR II+, and RLDRAM II. The device integrates 24 transceivers capable of up to 6.375 Gbps operation, which is the differentiator between the Stratix III L (low-power) and Stratix III GX variants. The 1517-BGA package supports 976 user I/Os - among the highest I/O count in the Stratix III family - and is appropriate for systems requiring wide external memory buses, parallel ASIC-emulation interfaces, or many LVDS channels.
Architecturally, the EP3SL340F1517I4L uses a 65 nm low-k dielectric process, multi-level copper interconnect, and an adaptive logic module (ALM) based on 8-input fracturable look-up tables, which gives finer-grained logic packing and shorter critical paths than the older 4-input LUT architecture used in Stratix II. The transceivers use a hardened PCS/PMA pipeline that supports protocols such as PCIe Gen1/Gen2, Serial RapidIO, XAUI, and CEI-6G.
Typical applications include wireline telecommunication line cards, software-defined radio (SDR) baseband processing, ASIC prototyping and emulation, high-performance computing (HPC) acceleration, broadcast video processing, and military/aerospace signal processing. The device is well-suited to designs that require the largest logic capacity and widest memory bandwidth in the Strat III L family.
When designing with this device, engineers should carefully manage power and thermal envelopes - even the L (low-power) variant of a 337k-LE FPGA can dissipate tens of watts under heavy transceiver and DSP utilization, requiring a multi-layer PCB with continuous ground and power planes, controlled-impedance routing for the 6 Gbps transceivers, and a substantial heatsink. Industrial-grade temperature range (-40C to +100C junction) is supported by the I4 speed grade.
This page synthesizes distributor pricing, drop-in same-brand and cross-brand alternatives, and practical design considerations beyond what the manufacturer datasheet alone provides, helping procurement and FPGA hardware engineers source the part more efficiently.
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