{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM8AL3L66TCY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM8AL3L66TCY","canonicalUrl":"https://icboms.com/stmicroelectronics/STM8AL3L66TCY","factsUrl":"https://icboms.com/api/mcp/products/STM8AL3L66TCY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM8AL3L66TCY, Automotive AEC-Q100, 8-bit STM8A core MCU, 16 MHz, 32 KB Flash, 2K x 8 RAM, 1K x 8 EEPROM, 29 I/O, 32-LQFP, -40°C to 125°C.","salesMarkdown":"That means ST is not actively promoting it for new projects, though it remains available through existing production and aftermarket channels. For a BOM that already qualifies this part, the NRND flag is a signal to evaluate a pin-compatible alternative before a full EOL notice arrives. ## Peripheral set and I/O for a LIN-node or sensor hub Housed in a 32-LQFP (7x7 mm) surface-mount package, the STM8AL3L66TCY is a standard footprint for mid-density automotive MCUs. The 32-pin LQFP keeps the board area small while still offering enough I/O for a LIN node or a local sensor aggregation point.","metaTitle":"STM8AL3L66TCY 8-bit MCU, 16 MHz, AEC-Q100, 32 KB Flash","metaDescription":"STMicroelectronics STM8AL3L66TCY 8-bit MCU, 16 MHz, 32 KB Flash, 2K x 8 RAM, 1K x 8 EEPROM, AEC-Q100 automotive grade, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"16MHz","Series":"Automotive, AEC-Q100, STM8A","Package":"Tray","RAM Size":"2K x 8","Core Size":"8-Bit","EEPROM Size":"1K x 8","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"I²C, IrDA, LINbus, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"29","Core Processor":"STM8A","Package / Case":"32-LQFP","Product Status":"Not For New Designs","Data Converters":"A/D 21x12b; D/A 1x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM8","Program Memory Size":"32KB (32K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~125°C(TA)","Supplier Device Package":"32-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.2000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/fcda9e9e20a5c37a9c561bb37d935f5e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM8AL3L66TCY/alternatives.json"},"ai":{"faq":[{"question":"Is STM8AL3L66TCY obsolete?","answer":"For existing production, it remains available through aftermarket channels. Plan a qualification cycle for a replacement before a potential EOL notice."},{"question":"What is the closest pin-compatible alternative to STM8AL3L66TCY?","answer":"ST's STM8A family includes multiple density and package options that are pin-compatible across the 32-LQFP footprint. For an exact replacement, check the STM8AL3Lxx series variants with matching Flash and RAM sizes — the base product number STM8 covers the family. We can help identify a specific alternate when you submit an RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM8AL3L66TCY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM8AL3L66TCY when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}