{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AT45DB321E-SHF-B","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"AT45DB321E-SHF-B","canonicalUrl":"https://icboms.com/renesas/AT45DB321E-SHF-B","factsUrl":"https://icboms.com/api/mcp/products/AT45DB321E-SHF-B","rawCanonicalId":null},"summary":{"shortDescription":"Renesas Electronics DataFlash AT45DB321E-SHF-B, 32Mbit SPI flash, 85 MHz, 2.3-3.6V, 8-SOIC (0.209\", 5.30mm width), Tube.","salesMarkdown":"## 32 Mbit SPI flash — page architecture and interface The AT45DB321E-SHF-B is a 32 Mbit serial flash organized as 528 bytes × 8192 pages, accessed over an SPI bus at up to 85 MHz. The 528-byte page size is non-standard — most SPI NOR parts use 256-byte pages — so the firmware driver must account for the different sector mapping and erase granularity. The 2.3V–3.6V supply rail covers both 3.3V and 2.5V logic systems without a separate level translator on the SPI lines. The supplier device package is listed as 8-SOIC — same mechanical outline, no exposed pad. ## Write and erase timing — firmware update budget Page write time is 8 µs typical; page erase takes 4 ms typical. For a firmware update of 256 KB, the erase latency dominates — roughly 2 seconds for the full chip if erased in page-sized chunks. The 85 MHz SPI clock keeps the read throughput high enough for execute-in-place (XIP) if the MCU supports it, but the 4 ms erase per page means the device is better suited for data logging or OTA staging than for frequent small-sector rewrites.","metaTitle":"Renesas AT45DB321E-SHF-B 32Mbit SPI Flash, 85MHz, 8-SOIC","metaDescription":"AT45DB321E-SHF-B 32Mbit SPI flash from Renesas, 85 MHz clock, 2.3-3.6V supply, industrial temp, 8-SOIC. Active, ROHS3. Order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Package":"Tube","Technology":"FLASH","Memory Size":"32Mbit","Memory Type":"Non-Volatile","Memory Format":"FLASH","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.209\\\", 5.30mm Width)","Clock Frequency":"85 MHz","lifecycle_stage":"eol_hot","Memory Interface":"SPI","Voltage - Supply":"2.3V ~ 3.6V","Memory Organization":"528 Bytes x 8192 pages","Operating Temperature":"-40°C ~ 85°C (TC)","Supplier Device Package":"8-SOIC","Write Cycle Time - Word, Page":"8µs, 4ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.56","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.56000","currency":"USD"},{"qty":10,"price":"$3.23100","currency":"USD"},{"qty":25,"price":"$3.16120","currency":"USD"},{"qty":50,"price":"$3.14420","currency":"USD"},{"qty":100,"price":"$2.81910","currency":"USD"},{"qty":250,"price":"$2.80888","currency":"USD"},{"qty":500,"price":"$2.70624","currency":"USD"},{"qty":1000,"price":"$2.57281","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/68a7309c8365d6b63da3174204fb0b1f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy AT45DB321E-SHF-B and get a price?","answer":"The AT45DB321E-SHF-B is sourced through authorized distribution channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/AT45DB321E-SHF-B","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/AT45DB321E-SHF-B when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}