Logic density and I/O count for the board
The EP4CE15F17I7 packs 15408 logic elements and 963 LABs/CLBs — enough for a moderate state machine with some glue logic, or a small soft-core processor with peripheral decode. The 165 user I/O in a 256-FBGA (17x17 mm) means the outer rows fan out on a 4-layer board without heroic trace necking. On-chip memory totals 516096 bits — enough for a small FIFO or register file, but not enough to buffer a full video frame. The 1.15V to 1.25V core supply keeps dynamic power manageable in a thermally constrained enclosure.
