39600 logic elements, 328 I/O — what the fabric delivers
The EP4CE40F23I8LN: The 328 user I/O pins route through a 484-ball FBGA package on a 23x23 mm footprint.
Core supply and board integration
The core voltage rail runs at 0.97 V to 1.03 V — a tight tolerance that demands a regulated supply within 30 mV of the 1.0 V nominal. Surface-mount assembly with the BGA footprint means the reflow profile must match the JEDEC moisture sensitivity level for the package. The 328 I/O count gives plenty of headroom for a 200-pin bus interface plus peripheral control lines without resorting to multiplexing.
Sourcing posture and lifecycle reality
This is a current-production Cyclone IV E device, so it is available through authorized distribution channels. For BOM planning, the base product number EP4CE40 covers the full density family; the suffix encodes the package, temperature grade, and speed bin. No stock-holding claim; sourced per order through independent and authorized distribution.
