Logic capacity and I/O count — fit for the BOM
The EP4CE15E22C8N packs 15408 logic elements and 516096 bits of embedded RAM in a 144-EQFP package with 81 user I/O.

Intel Cyclone® IV E FPGA, EP4CE15E22C8N, 15408 logic elements, 81 I/O, 516096 total RAM bits, 1.15V–1.25V supply, 144-LQFP Exposed Pad (144-EQFP), 0°C to 85°C operating temperature.
| Parameter | Value |
|---|---|
| Series | Cyclone® IV E |
| Mounting | Surface Mount |
| Supply voltage | 1.15V ~ 1.25V |
| Operating temperature | 0°C~85°C(TJ) |
| Package | Tray |
| Number of i (O) | 81 |
| Case | 144-LQFP Exposed Pad |
| Total RAM bits | 516096 |
| Number of LABs (CLBs) | 963 |
| Number of logic elements (Cells) | 15408 |
The EP4CE15E22C8N packs 15408 logic elements and 516096 bits of embedded RAM in a 144-EQFP package with 81 user I/O.
The EP4CE15E22C8N has 81 user I/O and comes in a 144-LQFP Exposed Pad package (144-EQFP, 20x20 mm).
No direct drop-in replacement exists within the Cyclone IV family. The EP4CGX15BF14C8N (Cyclone IV GX) offers similar logic density (14400 LEs) but with a different package (484-BGA) and fewer I/O (72), requiring a board redesign.
Both share the same logic density (15408 LEs) and RAM (516096 bits), but the EP4CE15F17C8N uses a 256-BGA package with more I/O (179) versus the 144-EQFP with 81 I/O on the EP4CE15E22C8N. The package and I/O count are the deciding factors for board layout.