{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"KU87C51SLAH","brand":"Intel","brandSlug":"intel","productSlug":"KU87C51SLAH","canonicalUrl":"https://icboms.com/intel/KU87C51SLAH","factsUrl":"https://icboms.com/api/mcp/products/KU87C51SLAH","rawCanonicalId":null},"summary":{"shortDescription":"Intel/KOCOM KU87C51SLAH, 8-bit 87C51 core MCU, 16 MHz, 16 KB OTP, 256 x 8 RAM, 24 I/O, A/D 4x8b SAR, 100-QFP, 0°C to 70°C, 3 V to 5.5 V.","salesMarkdown":"## OTP memory: firmware is locked at the factory The KU87C51SLAH carries 16 KB of one-time-programmable (OTP) program memory. Once the device is programmed, the code is permanent — no UV erase window, no EEPROM reflash, no firmware field update. For a BOM line, this means every firmware revision or bug fix requires a new, unprogrammed part. The 16 KB OTP is organized as 16K x 8 and is intended for production code that is finalized before the first unit is assembled. ## Temperature grade and environment Rated for 0°C to 70°C (commercial grade). Supply voltage spans 3 V to 5.5 V. ## Package and mounting Housed in a 100-pin QFP (19.05 x 19.05 mm body), surface-mount. 24 I/O lines, 4-channel 8-bit SAR ADC, UART/USART integrated.","metaTitle":"KU87C51SLAH 8-bit 8051 MCU, 16 MHz, OTP, 100-QFP","metaDescription":"KU87C51SLAH 8-bit 87C51 MCU at 16 MHz with 16 KB OTP program memory, 256x8 RAM, 24 I/O, 4-ch 8-bit ADC, in 100-QFP. Active, RoHS non-compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":"8XC51SL","packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Speed":"16MHz","Series":"8XC51SL","Package":"Bulk","RAM Size":"256 x 8","Core Size":"8-Bit","Peripherals":"LED","Connectivity":"UART/USART","Mounting Type":"Surface Mount","Number of I/O":"24","Core Processor":"87C51","Package / Case":"100-QFP","Data Converters":"A/D 4x8b SAR","Oscillator Type":"External, Internal","lifecycle_stage":"eol_hot","Program Memory Size":"16KB (16K x 8)","Program Memory Type":"OTP","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"100-PQFP (19.05x19.05)","Voltage - Supply (Vcc/Vdd)":"3V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$15.17","stockQuantity":0,"priceTiers":[{"qty":20,"price":"$15.17000","currency":"USD"}]},"links":{"datasheetUrl":"https://rocelec.widen.net/view/pdf/290yufm0om/RE_DSHEET_8xC31BH-51BH_REI.pdf?t.download=true&u=5oefqw","sourceUrl":null},"ai":{"faq":[{"question":"Can KU87C51SLAH be reprogrammed?","answer":"No. The KU87C51SLAH uses one-time-programmable (OTP) memory — once programmed, the code is permanent and cannot be erased or rewritten. Any firmware change requires a new, unprogrammed part."},{"question":"What is KU87C51SLAH's listed speed?","answer":"The KU87C51SLAH is rated for a 16 MHz operating speed on the 87C51 core."},{"question":"What is the difference between OTP and EPROM?","answer":"OTP (one-time programmable) memory is programmed once and cannot be erased. EPROM (erasable programmable read-only memory) can be erased by exposing the die to ultraviolet light through a quartz window, then reprogrammed. The KU87C51SLAH uses OTP, so there is no erase capability."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/intel/KU87C51SLAH","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/intel/KU87C51SLAH when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-11T19:37:46.215Z","lastPublished":"2026-07-11T19:37:46.215Z","indexable":true}}