{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"11AA010-I/TO","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"11AA010-I-TO","canonicalUrl":"https://icboms.com/microchip/11AA010-I-TO","factsUrl":"https://icboms.com/api/mcp/products/11AA010-I%2FTO","rawCanonicalId":null},"summary":{"shortDescription":"Microchip 11AA010-I/TO EEPROM, 1Kbit, Non-Volatile, Single Wire Interface, 100 kHz, 1.8V–5.5V, -40°C to 85°C, Through Hole, TO-92-3, Bag.","salesMarkdown":"## Single-wire 1Kbit EEPROM in a TO-92-3 The Microchip 11AA010-I/TO is a 1Kbit serial EEPROM organized as 128 x 8 bits, communicating over a single-wire interface at up to 100 kHz. The single-wire bus saves one GPIO compared to I2C or SPI EEPROMs, which matters when the host MCU has no spare pins or the board area is constrained. The TO-92-3 through-hole package suits hand-assembly, prototyping, or retrofit into existing sockets. The 100 kHz clock sets the read throughput at roughly 12.5 kbytes/s sustained. The write cycle time of 5 ms per byte or page means a full 128-byte rewrite takes about 640 ms if written byte by byte; writing in page mode (if supported) cuts that to 5 ms per page. For infrequent writes — calibration constants, serial numbers, boot parameters — this is adequate. For streaming data logging, a faster interface (I2C at 400 kHz or SPI at 1 MHz) would be needed. ROHS3 compliance is confirmed, so it meets the EU directive for lead-free soldering and handling. ## Single-wire vs I2C — the interface difference that decides fit The single-wire interface uses one data line for both clock and data, which simplifies routing but limits bus speed to 100 kHz and does not support multi-drop addressing the way I2C does. The 24AA01-I/P (I2C, 400 kHz) and AT24C01C-PUM (I2C, 1 MHz) are pin-compatible in the same TO-92-3 footprint but require two wires (SCL, SDA) and a pull-up resistor on each. If the host MCU has an I2C peripheral free, the 24AA01-I/P offers four times the clock speed; if the only free pin is a GPIO, the 11AA010-I/TO is the simpler choice. ## Through-hole assembly — TO-92-3 in a Bag The part ships in a Bag (bulk), not tape-and-reel, which is typical for through-hole devices. The TO-92-3 package has a 2.54 mm pin pitch and fits standard 0.1-inch prototyping boards. No special moisture sensitivity level (MSL) concerns apply — through-hole parts are generally MSL 1 and do not require baking before soldering.","metaTitle":"Microchip 11AA010-I/TO EEPROM, 1Kbit, Single-Wire, TO-92-3","metaDescription":"Microchip 11AA010-I/TO 1Kbit EEPROM with single-wire interface, 100 kHz clock, 1.8V–5.5V supply, -40°C to 85°C. Active, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Package":"Bag","Technology":"EEPROM","Memory Size":"1Kbit","Memory Type":"Non-Volatile","Memory Format":"EEPROM","Mounting Type":"Through Hole","Package / Case":"TO-226-3, TO-92-3 (TO-226AA)","Clock Frequency":"100 kHz","lifecycle_stage":"eol_hot","Memory Interface":"Single Wire","Voltage - Supply":"1.8V ~ 5.5V","Memory Organization":"128 x 8","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"TO-92-3","Write Cycle Time - Word, Page":"5ms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3","priceTiers":[{"qty":1,"price":"$0.30000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7e0bb80ac6f9ae234873f64c6baf4f4d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/11AA010-I%2FTO/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between 11AA010-I/TO and 24AA01?","answer":"The 11AA010-I/TO uses a single-wire interface (100 kHz), while the 24AA01-I/P uses I2C (400 kHz). The 24AA01-I/P requires two bus lines (SCL, SDA); the 11AA010-I/TO needs only one data line."},{"question":"What is the write speed of 11AA010-I/TO?","answer":"At 100 kHz clock, the read throughput is about 12.5 kbytes/s."},{"question":"Where can I find the datasheet for 11AA010-I/TO?","answer":"The datasheet is available from the manufacturer's website and through standard distributor document portals. It contains the full electrical specifications, timing diagrams, and application notes for the single-wire protocol."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/11AA010-I-TO","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/11AA010-I-TO when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}