Logic fabric and I/O budget for a BOM line
The EP4CE10F17C8 carries 10320 logic elements (LEs) arranged into 645 LABs/CLBs — the LE count sets the upper bound for combinatorial and sequential logic you can fit without resorting to a larger density. 179 user I/O on a 256-LBGA package means roughly 70 % of the balls are signal pins; the rest are supply and ground, which keeps simultaneous-switching noise manageable on a four-layer board. On-chip block RAM totals 423936 bits — enough for a small frame buffer, a handful of FIFOs, or coefficient storage for a FIR filter without bolting on external SRAM.
Package footprint and board-fit note
The 256-FBGA (17x17 mm) package has a 1.0 mm ball pitch — a two-layer board can break out the outer two rows, but the inner balls require at least four layers with microvias or blind vias for full fan-out. The 0°C to 85°C junction temperature range covers commercial and most industrial indoor environments; if the enclosure sees sustained ambient above 70°C, the junction temperature budget narrows and a heat sink or forced air may be needed.
This is a current-production Cyclone IV E part, not an end-of-life scavenge.