{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SST38VF6403B-70I/CD","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"SST38VF6403B-70I-CD","canonicalUrl":"https://icboms.com/microchip/SST38VF6403B-70I-CD","factsUrl":"https://icboms.com/api/mcp/products/SST38VF6403B-70I%2FCD","rawCanonicalId":null},"summary":{"shortDescription":"Microchip SST38 series, Parallel NOR Flash, 64Mbit (4M x 16), 70 ns access time, 2.7V-3.6V supply, -40°C to 85°C, 48-TFBGA (6x8), Tray.","salesMarkdown":"## 64 Mbit parallel NOR Flash in a 48-ball BGA The Microchip SST38VF6403B-70I/CD is a 64 Mbit parallel NOR Flash memory organized as 4M x 16. It is a member of the SST38 series, designed for code shadowing, execute-in-place (XIP), and parameter storage in embedded systems where fast random reads matter. The 70 ns access time means the bus can be run at up to roughly 14 MHz without wait states on a typical 16-bit microcontroller — useful for boot code or real-time lookup tables where SPI Flash latency would stall the pipeline. Supply voltage spans 2.7V to 3.6V, so it runs cleanly off a 3.3V rail with margin for brownout. ## 70 ns access time — timing margin on the bus In a system with a 16-bit MCU running at 12 MHz to 16 MHz, this gives roughly one to two CPU clock cycles of margin for address decoding and PCB trace delay. If you are upgrading from a slower 90 ns or 120 ns part, the SST38VF6403B-70I/CD buys you setup slack without changing the bus timing configuration. The parallel interface means the MCU reads it like internal SRAM — no SPI command overhead, no sector-read latency. Word and page write cycle time is 10 µs, typical for NOR Flash of this generation. ## 48-TFBGA — footprint and rework considerations The 48-TFBGA package with a 6x8 mm body is a fine-pitch BGA. The ball array is not the coarsest — expect a 0.8 mm or 0.65 mm pitch. That means via-in-pad or microvia fanout on anything less than a four-layer board. The supplier device package is 48-TFBGA (6x8). Bake before reflow if the moisture barrier bag has been open longer than the floor life — MSL 3 is typical for this class. Tray shipment is standard for BGA parts; if your pick-and-place line feeds from tape, expect a transfer to tape on request at extra cost. ROHS3 compliant. For dual-source resilience, the SST39VF1601-70-4I-B3KE-T is a 16 Mbit parallel NOR from the same SST family with matching 70 ns access time and 2.7V supply — but at one-quarter the density, so it is a die-shrink or cost-reduction alternative only if your code fits in 16 Mbit.","metaTitle":"Microchip SST38VF6403B-70I/CD 64Mbit Parallel NOR Flash","metaDescription":"Microchip SST38VF6403B-70I/CD 64Mbit parallel NOR Flash, 70 ns access time, 2.7V-3.6V supply, -40°C to 85°C, 48-TFBGA.","metaKeywords":null},"attributes":{"series":"SST38","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Signal Isolation"],"specifications":{"Series":"SST38","Package":"Tray","Technology":"FLASH","Access Time":"70 ns","Memory Size":"64Mbit","Memory Type":"Non-Volatile","Memory Format":"FLASH","Mounting Type":"Surface Mount","Package / Case":"48-TFBGA","lifecycle_stage":"eol_hot","Memory Interface":"Parallel","Voltage - Supply":"2.7V ~ 3.6V","Memory Organization":"4M x 16","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"48-TFBGA (6x8)","Write Cycle Time - Word, Page":"10µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.23","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$7.23000","currency":"USD"},{"qty":25,"price":"$6.94320","currency":"USD"},{"qty":100,"price":"$6.66740","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/2b4d534f5cf7314fe93982f117444994.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the access time of SST38VF6403B-70I/CD?","answer":"The access time is 70 ns. This is the address-to-data-output delay for a read operation, defining the maximum bus speed without wait states."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/SST38VF6403B-70I-CD","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/SST38VF6403B-70I-CD when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T10:39:33.080Z","lastPublished":"2026-07-16T10:39:33.080Z","indexable":true}}