{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AT45DQ321-SHF2B-T","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"AT45DQ321-SHF2B-T","canonicalUrl":"https://icboms.com/renesas/AT45DQ321-SHF2B-T","factsUrl":"https://icboms.com/api/mcp/products/AT45DQ321-SHF2B-T","rawCanonicalId":null},"summary":{"shortDescription":"AT45DQ321-SHF2B-T, 32Mbit SPI FLASH, 104 MHz, 2.3V-3.6V, 8-SOIC, -40°C to 85°C, Tape & Reel.","salesMarkdown":"## 32 Mbit SPI DataFlash in an 8-SOIC — a firmware-bringup note The AT45DQ321-SHF2B-T: 32 Mbit serial SPI Flash organised as 512 bytes per page across 8192 pages. Runs at 104 MHz clock over the SPI bus. 8-SOIC package. ## Write cycle timing and memory organisation Page write completes in 8 µs, full sector erase takes 4 ms. 512-byte page size.","metaTitle":"AT45DQ321-SHF2B-T 32Mbit SPI Flash, 104 MHz, 8-SOIC","metaDescription":"AT45DQ321-SHF2B-T 32Mbit SPI Flash, 104 MHz clock, 8-SOIC, active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","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":"104 MHz","lifecycle_stage":"eol_hot","Memory Interface":"SPI","Voltage - Supply":"2.3V ~ 3.6V","Memory Organization":"512 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":"$3.71","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.71000","currency":"USD"},{"qty":10,"price":"$3.36600","currency":"USD"},{"qty":25,"price":"$3.29240","currency":"USD"},{"qty":50,"price":"$3.27460","currency":"USD"},{"qty":100,"price":"$2.93610","currency":"USD"},{"qty":250,"price":"$2.92544","currency":"USD"},{"qty":500,"price":"$2.81856","currency":"USD"},{"qty":1000,"price":"$2.67959","currency":"USD"},{"qty":2000,"price":"$2.65108","currency":"USD"},{"qty":4000,"price":"$2.46579","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b9a2e898f67ec8c18358b8b8dfd321e1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does AT45DQ321-SHF2B-T replace AT45DB321?","answer":"AT45DQ321-SHF2B-T is a newer-generation DataFlash with a 104 MHz SPI clock, compared to 85 MHz for the AT45DB321E variants. The page organisation differs (512 bytes vs 528 bytes), so the firmware's page-addressing logic needs updating. The pinout and package are the same 8-SOIC, making it a drop-in replacement at the board level with a software change."},{"question":"Is AT45DQ321-SHF2B-T compatible with 3.3V systems?","answer":"Yes, the supply range of 2.3 V to 3.6 V covers 3.3 V logic directly. No level shifter is needed when connecting to a 3.3 V MCU SPI port."},{"question":"When sourcing AT45DQ321-SHF2B-T, what is the closest functional second-source?","answer":"The closest functional alternative is the AT45DQ321-SHFHJ-T, which shares the same 32 Mbit density, 104 MHz SPI speed, 8-SOIC package, and page organisation. It is a tape-and-reel variant with the same electrical specs, suitable as a dual-source option for supply resilience."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/AT45DQ321-SHF2B-T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/AT45DQ321-SHF2B-T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}