44 000 logic elements — what that means for your design
The LFE5UM-45F-8BG381C packs 44 000 logic elements in 11 000 LABs/CLBs, giving you the fabric to implement a modest soft-core processor plus peripheral logic without resorting to an external CPLD. The 203 user I/O routes to the 381-ball CABGA (17x17 mm) — enough pins to connect a parallel LCD, a 16-bit data bus, and a handful of sensors without multiplexing.
On-chip memory and supply rails
Total RAM bits come to 1 990 656 — roughly 1.9 Mb — enough for a 1024x768 frame buffer at 16-bit colour or a moderate FIFO for streaming data. The core supply is tight: 1.045 V to 1.155 V, so the board's voltage regulator must hold regulation within 110 mV across load steps. The commercial temperature grade (0°C to 85°C) suits indoor equipment, telecom racks, and benchtop instrumentation.
The 381-CABGA (17x17 mm) footprint is shared with the industrial-temperature sibling LFE5UM-45F-7BG381I — the same logic density and pinout, just a wider temperature range. If your design eventually needs -40°C operation, the pin-compatible swap is straightforward.