{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LCMXO2-640HC-4TG100C","brand":"Lattice Semiconductor Corporation","brandSlug":"lattice-semiconductor-corporation","productSlug":"LCMXO2-640HC-4TG100C","canonicalUrl":"https://icboms.com/lattice-semiconductor-corporation/LCMXO2-640HC-4TG100C","factsUrl":"https://icboms.com/api/mcp/products/LCMXO2-640HC-4TG100C","rawCanonicalId":null},"summary":{"shortDescription":"Lattice Semiconductor MachXO2 FPGA, LCMXO2-640HC-4TG100C, 640 logic elements, 78 I/O, 18 Kbit RAM, 2.375V–3.465V supply, 100-TQFP (14x14 mm), 0°C to 85°C, tray.","salesMarkdown":"## 640 logic elements and 78 I/O — glue-logic sweet spot The LCMXO2-640HC-4TG100C packs 640 logic elements (80 LABs/CLBs, each with 8 LEs) and 78 user I/O in a 100-TQFP (14x14 mm) package. That logic density lands it between a small CPLD and a mid-range FPGA — enough for address decoding, bus bridging, or a modest state machine without the overhead of a larger fabric. The 18 Kbit embedded RAM (18432 bits) handles small FIFOs or register files; for larger buffers you would use the block RAM in the MachXO2 family's higher-density siblings. ## Commercial temp grade and package fit For extended industrial (-40°C to 100°C) or automotive use, look at the 'I' or 'U' suffix parts in the MachXO2 family — the LCMXO2-640UHC-4TG144I, for example, offers 107 I/O and a wider temperature range. The 100-TQFP (14x14 mm) with 0.5 mm pitch demands a 4-layer PCB for reliable fan-out of all 78 I/O. The supplier device package is 100-TQFP (14x14) — the same footprint as the 100-LQFP case code.","metaTitle":"LCMXO2-640HC-4TG100C Lattice MachXO2 FPGA, 640 LEs, 78 I/O","metaDescription":"Lattice MachXO2 FPGA with 640 logic elements, 78 I/O, 18 Kbit RAM, 2.375V–3.465V supply. Active, ROHS3 compliant. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":"MachXO2","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["FPGA / CPLD & Programmable Logic"],"specifications":{"Mfr":"Lattice Semiconductor Corporation","Series":"MachXO2","Package":"Tray","Mounting Type":"Surface Mount","Number of I/O":"78","Package / Case":"100-LQFP","Product Status":"Active","Total RAM Bits":"18432","lifecycle_stage":"unknown","Voltage - Supply":"2.375V ~ 3.465V","Base Product Number":"LCMXO2-640","Number of LABs/CLBs":"80","Operating Temperature":"0°C ~ 85°C (TJ)","Supplier Device Package":"100-TQFP (14x14)","Number of Logic Elements/Cells":"640"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.7000","priceTiers":[{"qty":1,"price":"$9.70000","currency":"USD"},{"qty":25,"price":"$8.45000","currency":"USD"},{"qty":100,"price":"$8.12500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/306cd7d26c42fdbb9a5481d29cec9186.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LCMXO2-640HC-4TG100C/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to the LCMXO2-640HC-4TG100C?","answer":"The LCMXO2-640HC-4MG132C has the same 640 logic elements and 18432 bits of RAM, but in a 132-ball csBGA package with 79 I/O. The 100-TQFP and csBGA packages are not pin-compatible — a board layout change is required to swap between them."},{"question":"What compliance documentation does Lattice provide for this part?","answer":"The LCMXO2-640HC-4TG100C is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/lattice-semiconductor-corporation/LCMXO2-640HC-4TG100C","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/LCMXO2-640HC-4TG100C 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}}