{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"34LC02T-I/OT","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"34LC02T-I-OT","canonicalUrl":"https://icboms.com/microchip/34LC02T-I-OT","factsUrl":"https://icboms.com/api/mcp/products/34LC02T-I%2FOT","rawCanonicalId":null},"summary":{"shortDescription":"Microchip 34LC02T-I/OT, 2 Kbit I2C serial EEPROM, 1 MHz clock, 400 ns access, 2.2 V to 5.5 V, SOT-23-6, -40 to 85°C.","salesMarkdown":"## 2 Kbit I2C EEPROM in a SOT-23-6 — calibration-store or serial-ID page The Microchip 34LC02T-I/OT is a 2 Kbit serial EEPROM organized as 256 x 8 bits, accessed through an I2C interface running at up to 1 MHz. The 400 ns access time is the random-read cycle — fast enough for a configuration or calibration parameter fetch on a shared bus without stalling the master. ## 1 MHz I2C bus — timing margin on a shared line At 1 MHz the part runs in fast-mode-plus territory. That clock rate gives headroom when the bus also carries a higher-speed sensor or ADC — the EEPROM read does not force the master to drop to 400 kHz. The 5 ms write-cycle time for a page or word is the limiting factor during a firmware-parameter update; the bus is tied up for that window, so plan the write sequence around time-critical sensor reads. ## SOT-23-6 footprint — board-area trade-off The SOT-23-6 package (supplier device package SOT-23-6) saves about 60% board area versus an SOIC-8. That matters when the EEPROM is a secondary device — calibration constants, serial number, or manufacturing data — on a dense mixed-signal board. The trade-off: hand-solder rework is fiddly, and the small body limits the number of decoupling-capacitor placement options near the supply pin. Surface-mount only, no through-hole variant. For dual-sourcing resilience, the 24LC025T-I/ST is a 2 Kbit I2C EEPROM in a different package (TSSOP-8) with a 900 ns access time and 400 kHz max clock — a functional alternate if the board can accommodate the larger footprint and slower bus speed.","metaTitle":"Microchip 34LC02T-I/OT EEPROM, 2 Kbit I2C 1 MHz SOT-23-6","metaDescription":"Microchip 34LC02T-I/OT 2 Kbit serial EEPROM with I2C interface, 1 MHz clock, 400 ns access, SOT-23-6, -40 to 85°C. Active lifecycle, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Technology":"EEPROM","Access Time":"400 ns","Memory Size":"2Kbit","Memory Type":"Non-Volatile","Memory Format":"EEPROM","Mounting Type":"Surface Mount","Package / Case":"SOT-23-6","Clock Frequency":"1 MHz","lifecycle_stage":"eol_hot","Memory Interface":"I2C","Voltage - Supply":"2.2V ~ 5.5V","Memory Organization":"256 x 8","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"SOT-23-6","Write Cycle Time - Word, Page":"5ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.26","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.26000","currency":"USD"},{"qty":100,"price":"$0.25000","currency":"USD"},{"qty":3000,"price":"$0.25000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/50a3de3d02ecc5d131490c6ae417eb68.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the memory size of 34LC02T-I/OT?","answer":"The memory size is 2 Kbit, organized as 256 x 8 bits."},{"question":"When sourcing 34LC02T-I/OT, what is the closest functional second-source — 24LC025T-I/ST?","answer":"The 24LC025T-I/ST is a 2 Kbit I2C EEPROM from Microchip, but it runs at 400 kHz (versus 1 MHz) and comes in a TSSOP-8 package instead of SOT-23-6. It is a functional alternate if the slower bus speed and larger footprint are acceptable, but not a pin-compatible drop-in."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/34LC02T-I-OT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/34LC02T-I-OT 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}}