{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LFE5U-45F-7BG256I","brand":"Lattice Semiconductor Corporation","brandSlug":"lattice-semiconductor-corporation","productSlug":"LFE5U-45F-7BG256I","canonicalUrl":"https://icboms.com/lattice-semiconductor-corporation/LFE5U-45F-7BG256I","factsUrl":"https://icboms.com/api/mcp/products/LFE5U-45F-7BG256I","rawCanonicalId":null},"summary":{"shortDescription":"Lattice Semiconductor Corporation ECP5 FPGA, LFE5U-45F-7BG256I, 44,000 logic cells, 11,000 LABs, 197 I/O, 1.9 Mbit RAM, 256-ball CABGA, -40°C to 100°C.","salesMarkdown":"## 44K LUTs in a 14x14 mm BGA — logic density vs footprint trade-off The LFE5U-45F-7BG256I packs 44,000 logic cells across 11,000 LABs into a 256-ball CABGA measuring 14x14 mm. That is a dense slice of the ECP5 family — the same logic fabric as the larger 381-ball sibling but in a package that saves about 30% board area. For a design that needs 44K LUTs and can route within 197 I/O, this is the smallest physical envelope Lattice offers at this density. ## 197 user I/O — what the ball map gives up With 197 I/O on a 256-ball array, roughly 77% of the balls are signal — the rest are power, ground, and configuration pins. That is a high signal-to-ball ratio: the 59 non-I/O balls must supply the core at 1.045-1.155V and the I/O banks, so the PCB power-plane design needs to handle the current draw through a limited number of VCC and GND balls. The 14x14 mm body means the BGA pitch is 0.80 mm, which routes cleanly on a 4-layer board with 0.15 mm trace/space. The 1.9 Mbit embedded block RAM is distributed across the LAB array as 36 Kbit blocks. For a 44K LUT design, the RAM-to-logic ratio is about 43 bits per LUT — enough for small FIFOs, line buffers, or register files without bolting on external SRAM. Above that, the 197 I/O can interface to a parallel NOR flash or DDR memory on the same board. ## Industrial temperature grade — junction limits and thermal management In a sealed enclosure with no airflow, the 14x14 mm BGA's thermal resistance (θJA around 25-30°C/W typical for a 256-ball CABGA) means a 1.5W core power draw raises the junction 37-45°C above ambient. At 85°C ambient, the junction hits 122-130°C — above the 100°C limit. So this part needs either a heatsink, forced air, or a derated logic utilization to stay inside the TJ envelope at the high end of the industrial range.","metaTitle":"Lattice LFE5U-45F-7BG256I ECP5 FPGA, 44K LUTs, 197 I/O","metaDescription":"Lattice Semiconductor LFE5U-45F-7BG256I ECP5 FPGA, 44K logic cells, 197 I/O, 1.9 Mbit block RAM, -40°C to 100°C, 256-CABGA. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":"ECP5","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["FPGA / CPLD & Programmable Logic"],"specifications":{"Mfr":"Lattice Semiconductor Corporation","Series":"ECP5","Package":"Tray","Mounting Type":"Surface Mount","Number of I/O":"197","Package / Case":"256-LFBGA","Product Status":"Active","Total RAM Bits":"1990656","lifecycle_stage":"unknown","Voltage - Supply":"1.045V ~ 1.155V","Base Product Number":"LFE5U-45","Number of LABs/CLBs":"11000","Operating Temperature":"-40°C ~ 100°C (TJ)","Supplier Device Package":"256-CABGA (14x14)","Number of Logic Elements/Cells":"44000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$40.8000","priceTiers":[{"qty":1,"price":"$40.80000","currency":"USD"},{"qty":25,"price":"$35.55000","currency":"USD"},{"qty":100,"price":"$34.25500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/496575ee6a44fd98e19810ac630165b2.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LFE5U-45F-7BG256I/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/lattice-semiconductor-corporation/LFE5U-45F-7BG256I","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/lattice-semiconductor-corporation/LFE5U-45F-7BG256I when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}