{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"11LC020-I/P","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"11LC020-I-P","canonicalUrl":"https://icboms.com/microchip/11LC020-I-P","factsUrl":"https://icboms.com/api/mcp/products/11LC020-I%2FP","rawCanonicalId":null},"summary":{"shortDescription":"Microchip 11LC020-I/P, 2Kbit Serial EEPROM, Single-Wire Interface, 100 kHz, 2.5V-5.5V, 8-PDIP (0.300\", 7.62mm), -40°C to 85°C, Tube.","salesMarkdown":"## Single-wire EEPROM for pin-constrained designs The Microchip 11LC020-I/P is a 2Kbit serial EEPROM that communicates over a single-wire interface, needing only one I/O pin on the host microcontroller for both data and clock. The 8-pin DIP package (0.300\" body, 7.62mm pitch) is through-hole, so it's a natural for prototype boards, legacy rework, or environments where a socketed part is preferred over soldering a surface-mount package. ## Package and mounting The single-wire protocol runs at 100 kHz, which is slower than a typical I2C EEPROM (400 kHz) but adequate for storing a few hundred bytes of configuration data. Write-cycle time is 5 ms per word or page, so bulk writes take a moment — plan for a small delay in firmware if you're writing multiple bytes back-to-back. The 256 x 8 organization means each addressable byte is written individually; there's no page buffer larger than one byte, so each write takes the full 5 ms. Runs from 2.5V to 5.5V, so it bridges 3.3V and 5V logic without a regulator or level shifter — handy for mixed-voltage boards. No AEC-Q qualification is listed, so it's not a first choice for safety-rated automotive paths without additional screening. The through-hole PDIP package also means it's straightforward to hand-assemble or rework on a prototype run.","metaTitle":"Microchip 11LC020-I/P 2Kbit Single-Wire EEPROM, 8-PDIP","metaDescription":"Microchip 11LC020-I/P 2Kbit EEPROM with Single-Wire interface, 100 kHz clock, 2.5V-5.5V supply, 8-PDIP package, industrial temp range.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Interface & Transceivers"],"specifications":{"Package":"Tube","Technology":"EEPROM","Memory Size":"2Kbit","Memory Type":"Non-Volatile","Memory Format":"EEPROM","Mounting Type":"Through Hole","Package / Case":"8-DIP (0.300\\\", 7.62mm)","Clock Frequency":"100 kHz","lifecycle_stage":"eol_hot","Memory Interface":"Single Wire","Voltage - Supply":"2.5V ~ 5.5V","Memory Organization":"256 x 8","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-PDIP","Write Cycle Time - Word, Page":"5ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.38","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.38000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7e0bb80ac6f9ae234873f64c6baf4f4d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is 11LC020-I/P compatible with 24LC02?","answer":"No — the 11LC020 uses a single-wire interface, while the 24LC02 uses I2C. They are not pin-compatible and the bus protocols are different. The 11LC020 needs only one MCU pin; the 24LC02 needs SDA and SCL plus an address line. If your firmware already has an I2C driver, the 24C02C-E/P or 34AA02-I/P are closer functional matches, but they require two I/O lines and pull-up resistors."},{"question":"Does 11LC020-I/P require external components for single wire operation?","answer":"Yes — the single-wire bus needs a pull-up resistor on the data line, typically 4.7 kΩ to 10 kΩ to VCC, similar to an open-drain I2C line. No other external components are required for basic operation. The 5 ms write cycle is internally timed, so no external timing is needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/11LC020-I-P","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/11LC020-I-P 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}}