Logic density and memory for the BOM line
The Lattice ECP3 LFE3-70EA-8FN672C packs 67000 logic elements and 4.5 Mbit of block RAM — the 4526080 total RAM bits give you room for moderate-size FIFOs, line buffers, or a soft-core processor cache without reaching off-chip. That density puts it above the LFE3-35 parts in the same family, which top out at 33000 logic elements and 1358848 RAM bits. The 380 I/O in the 672-ball FBGA package means this part can serve as a glue-logic hub or a modest parallel-bus interface controller, though the ball pitch and routing density demand a 6- or 8-layer board to fan out the outer rows cleanly.
Temperature grade and what it means for the build
The core supply voltage is 1.14 V nominal — a clean 1.2 V rail with ±5% tolerance keeps the internal logic within spec. The 672-ball FBGA has a central ground paddle that must be soldered to a thermal via array under the package; without it, the junction temperature rises 15-20°C above the ambient reading at the board edge.
Active lifecycle and procurement posture
It is a current-production part that can be specified into new designs without worrying about a near-term obsolescence-driven board spin.