Logic density and I/O for a mid-range FPGA design
The EP4CE115F23C9L sits at the high end of the Cyclone IV E family with 114480 logic elements — enough to implement a soft-core processor, a video scaler, or a multi-axis motor controller with room left for glue logic. 280 user I/O in a 484-ball BGA gives you the pin count to interface with a parallel LCD, DDR2 memory, and a dozen sensors without multiplexing the bus.
On-chip memory and core supply for the signal chain
3981312 total RAM bits (about 3.8 Mbit) are distributed as M9K blocks — each block is 9 Kbit true dual-port, so you can build FIFOs, line buffers, or small packet caches without external SRAM. The core voltage rail is tight at 0.97 V to 1.03 V — a 1.0 V switching regulator with ±3% setpoint covers it, but a standard 1.2 V rail will damage the die.
Package and board integration
484-ball FBGA, 23 mm square, 1.0 mm ball pitch — four-layer PCB with via-in-pad is the practical minimum for fan-out; six layers if you route the full 280 I/O to the edge connectors. Surface-mount only; the tray packaging means the parts ship in matrix trays, not tape-and-reel, so pick-and-place feeders need a tray handler or waffle-pack adapter.