Logic fabric and I/O budget
The ICE40HX1K-VQ100 packs 1280 logic elements arranged in 160 LABs/CLBs, with 72 user I/O brought out to the 100-TQFP package. That 72 I/O count is the hard ceiling for the design — every external bus, sensor interface, or debug header consumes one of these pins, so the BOM must budget for the peripheral count before the layout starts. On-chip block RAM totals 65536 bits — enough for a small FIFO, a coefficient lookup table, or a boot-time configuration cache, but not for frame buffers or large data queues. The 1.14V to 1.26V core supply means a single 1.2V rail powers the logic fabric, keeping the power-distribution network simple on a two-layer board.
Housed in a 100-LQFP (supplier device package 100-TQFP, 14x14 mm), this is a fine-pitch surface-mount package with 0.5 mm lead pitch. The QFP body is large enough for manual inspection and rework with a standard hot-air station — no X-ray needed for BGA hidden joints. The tray packaging means the parts arrive in a rigid carrier, not tape-and-reel, so the pick-and-place feeder setup must be configured for tray input. Operating temperature spans -40°C to 100°C (TJ) — industrial grade that covers outdoor telecom cabinets, factory-floor controllers, and engine-bay-adjacent electronics without a commercial-grade derating step.